know 的英语意思
knowknow1 /nəʊ $ noʊ/ verb (past tense knew /njuː $ nuː/, past participle known /nəʊn $ noʊn/) 
查看全部语言翻译1have information [intransitive, transitive] to have information about something了解某事；知道某事: 
Who knows the answer?谁知道答案？ There are instructions telling you everything you need to know.有说明书告诉你需要知道的一切。 Didn’t you know that?你不知道那件事吗？know what/how/where etc Do you know what time it is?你知道现在几点了吗？ I don’t know where to go.我不知道该去哪里。know (something/nothing etc) about something I need to know more about the job before I decide whether to apply for it.我需要更多地了解这份工作，然后再决定是否申请。 Little is known about the author’s childhood.关于这位作者的童年，人们知之甚少。 I know all about David and what he’s been up to!我对David以及他最近在做什么了如指掌！know (something/nothing etc) of something I wonder if he knew of the plan?我想知道他是否知道这个计划？ Do you know of any good restaurants in the area?你知道这一带有什么好的餐厅吗？ You know nothing of this business.你对这件事一无所知。know (that) We know that greenhouse gases can affect the climate.我们知道温室气体会影响气候。 Let me know (=tell me) what time you’re planning to arrive.告诉我（=let me know 即"告诉我"）你打算几点到。 I thought you’d want to know immediately.我以为你会想立刻知道的。 If you must know, I was with James last night (=used when you are angry because someone wants to know something).如果你非要知道的话，我昨晚和James在一起（=用于因别人追问而感到恼火时）。without somebody/somebody’s knowing He slipped out of the house without his parents knowing (=secretly).他悄悄溜出了家门，父母全然不知（=secretly 即"偷偷地"）。 How did he know (=how did he find information about) our names?他是怎么知道（=怎么查到）我们的名字的？as you/we know ‘I’m divorced, as you know,’ she said briefly."我离婚了，你是知道的，"她简短地说。be known to do something Smoking is known to increase a person’s risk of developing lung cancer.众所周知，吸烟会增加患肺癌的风险。GRAMMAR语法In more formal English, you say it is known that or it is known who/why/what etc: · It is known that the drug causes infertility.· It is not known how many people were killed.在较正式的英语中，说 it is known that 或 it is known who/why/what 等：· It is known that the drug causes infertility.（已知该药物导致不育。）· It is not known how many people were killed.（有多少人遇难，目前不得而知。）2be sure [intransitive, transitive] to be sure about something对某事感到确定: ‘Are you seeing Jim tomorrow?’ ‘I don’t know yet.’"你明天会见Jim吗？""我还不知道。"know (that) I know I won’t get the job.我知道我不会得到这份工作的。 Ruth knew that she couldn’t continue in the relationship for much longer.Ruth知道她无法在这段关系中继续太久了。know what/why/how etc I know exactly what you need!我确切地知道你需要什么！know if/whether The boy stared at him uncertainly, not knowing whether to believe him.男孩不确定地盯着他看，不知道是否该相信他。 I don’t know if I’ll be able to come.我不确定我能否来。knowing (that) She forced herself to go out, knowing that she would feel more depressed if she stayed at home.她强迫自己出门，因为她知道如果待在家里会更加抑郁。 How do you know (=what makes you sure) he won’t do it again?你怎么知道（=你凭什么确定）他不会再这样做？know somebody/something to be something It’s a story that I know to be true.这是一个我确信是真实的故事。 I think he’s still living in Chicago, but I don’t know for sure.我认为他还住在芝加哥，但我不能确定。 As far as I know, they’re arriving on Saturday (=used when you think something is true but are not sure).据我所知，他们将在周六到达（=用于认为某事可能属实但不确定时）。 I doubt I’ll win, but you never know (=used when you cannot be sure about something, but something good might happen).我不觉得我会赢，但世事难料（=you never know，用于无法确定某事但好事或许会发生时）。► see thesaurus at sure3be familiar with somebody/something [transitive] to be familiar with a person, place etc与某人、某地等相熟: I’ve known her for twenty years.我认识她已有二十年了。 Are you really thinking of leaving Kevin for a guy you barely know?你真的在考虑为了一个几乎不认识的男人而离开Kevin吗？ Do you know the nightclub on the corner of Maine Street?你知道Maine Street转角处那家夜总会吗？ I don’t know him very well.我不太了解他。 We’re still getting to know each other really.我们其实还在互相了解中。know somebody from something I know her from school.我是在学校认识她的。know somebody as something Many people knew him as a local businessman.许多人认识他，知道他是当地的一名商人。 Hepburn is best known for (=people are most likely to be familiar with) her roles in classic films such as ‘My Fair Lady’.赫本最为人所知的（=best known for，即"人们最熟悉的"）是她在《窈窕淑女》等经典电影中的角色。 The museum outlines the development of the city as we know it today.博物馆概述了这座城市发展成我们今天所熟知的样子的过程。 Does he know the way to your house (=know how to get there)?他知道去你家的路（=know the way，即"知道怎么到那里"）吗？ I grew up here; I know the place like the back of my hand (=I know it very well).我在这里长大，对这个地方了如指掌（=know the place like the back of my hand，即"非常熟悉"）。 I only know her by sight (=I often see her but have not really spoken to her).我只是见过她的面（=know by sight，即"经常见到但没有真正交谈过"）。 She didn’t know me from Adam (=she did not know me at all), but she was really helpful.她对我完全陌生（=didn't know me from Adam，即"完全不认识我"），但她还是非常热心地帮忙。knowing somebody/if I know somebody (=used to say that you expect someone to behave in a particular way because you know them well)（=用于表示因为了解某人，所以预料他们会以某种方式行事） Knowing Sumi, my note’s probably still in her pocket.了解Sumi的话，我的便条大概还在她口袋里呢。 He’ll be chatting up the women, if I know Ron!如果我没看错Ron的话，他肯定在向女士们献殷勤呢！4realize [intransitive, transitive] to realize, find out about, or understand something意识到、发现或理解某事: She knew the risks involved.她清楚其中的风险。 Hardly knowing what he was doing, Nick pulled out a cigarette.Nick几乎不知道自己在做什么，摸出了一支烟。know (that) Suddenly she knew that something was terribly wrong.她突然意识到有什么地方严重出错了。know how/what/why etc I didn’t know how difficult it would be.我没想到会这么难。know to do something She knows not to tell anyone.她知道不能告诉任何人。(do you) know what I mean? (=used to ask if someone understands or has the same feeling as you)（=用于询问对方是否理解你的意思或有同样的感受） It’s nice to have a change sometimes. Know what I mean?有时候换个口味挺好的。你明白我的意思吗？if you know what I mean Sometimes it’s better not to ask too many questions, if you know what I mean.有时候不要问太多问题更好，你懂我的意思吧。 ‘I just felt so tired.’ ‘Yeah, I know what you mean.’ (=I understand, because I have had the same experience)"我就是觉得太累了。""对，我懂你的意思。"（=I know what you mean，即"我理解，因为我有过同样的经历"） I should have known it wouldn’t be easy.我本应该知道这不会容易的。 I might have known (=I am annoyed but not surprised) you would take that attitude.我早该想到（=I might have known，即"我感到恼火但并不惊讶"）你会那么个态度。know exactly/precisely I know exactly how you feel.我完全理解你的感受。know perfectly well/full well/only too well He knew full well that what he was doing was dangerous.他非常清楚地知道自己在做的事情是危险的。somebody will never know/no one will ever know Just take it. No one will ever know.就拿去吧。谁也不会知道的。 ‘That’s not what I mean, and you know it,’ he protested."那不是我的意思，你心里清楚，"他抗议道。if I had known/if I’d have known I wouldn’t have come if I’d known you were so busy.如果我知道你这么忙，我就不会来了。 Little did she know (=she did not know) that years later she would have her own pool and luxury apartment in Florida.她当时全然不知道（=Little did she know，即"她不知道"），多年后她将在佛罗里达拥有自己的游泳池和豪华公寓。 She knew nothing of what had happened earlier that day.她对那天早些时候发生的事一无所知。5skill/experience [transitive] to have learned a lot about something or be skilful and experienced at doing something对某事有深入了解，或在做某事方面技艺娴熟、经验丰富: I don’t know enough history to make a comparison.我对历史了解不够，无法进行比较。 I taught him everything he knows.他所知道的一切都是我教的。 I know some French.我会一些法语。know how to do something Do you know how to change a fuse?你会换保险丝吗？know about I have a friend who knows about antiques.我有个朋友懂骨董。 Bessie knew nothing about football.Bessie对足球一无所知。 Politicians know all about the power of language.政客们深知语言的力量。 I don’t know the first thing about (=I know nothing about) looking after children.我对照顾孩子一窍不通（=don't know the first thing about，即"完全不了解"）。 I don’t really know what I’m doing (=I do not have enough skill and experience to deal with something) when it comes to cars.说到车，我真的不知道该怎么弄（=don't know what I'm doing，即"没有足够的技能和经验来处理某事"）。 The staff are dedicated people who clearly know what they are talking about.工作人员都是尽职尽责的人，显然对自己所谈的事情了如指掌。 She knew from experience that exams made her very nervous.她从经验中知道，考试会让她非常紧张。know your job/subject/stuff (=be good at and know all you should about a job or subject)（=擅长并全面掌握某项工作或学科所需知识） a decent manager who knows the ropes (=has a lot of experience)一位熟悉套路（=knows the ropes，即"经验丰富"）的称职经理 My cousin knows a thing or two (=knows a lot) about golf.我表弟对高尔夫颇有了解（=knows a thing or two，即"了解很多"）。know a song/tune/poem etc (=be able to sing a song, play a tune, say a poem etc because you have learned it)（=因为已经学过，所以能演唱一首歌、演奏一段曲子、朗诵一首诗等） Do you know all the words to ‘As Time Goes By’?你会唱《岁月流逝》（As Time Goes By）的全部歌词吗？6know somebody’s qualities [transitive] to think that someone has particular qualities认为某人具有某种特质know somebody as something I knew him as a hard-working, modest, and honest politician.在我认识的他是一位勤奋、谦虚、诚实的政治家。know somebody for something In fact, I knew her for a tough-minded young woman.事实上，我认为她是一个意志坚强的年轻女性。7know better a)to be wise or experienced enough not to do something有足够的判断力或经验，懂得不去做某事: It’s just prejudice from educated people who should know better.这不过是受过教育的人身上的偏见，他们本该更明智的。 Eva knew better than to interrupt one of Mark’s jokes.Eva很明智，知道不应该打断Mark讲笑话。 b)to know or think you know more than someone else比别人知道得更多，或自以为比别人了解得更多: Everyone thought it was an accident. Only Dan knew better.每个人都以为那是意外，只有Dan知道事实并非如此。8not know any better used to say that someone does something bad or stupid because they have not been told or taught that it is wrong用于表示某人做坏事或蠢事，是因为从没有人告诉或教导他们那样做是错的: Drugs are being sold to children who don’t know any better.毒品正被卖给那些不知道这有什么问题的孩子们。9know something inside out (also know something backwards British English, know something backwards and forwards American English) to be very familiar with something, especially because you have learned about it or because you have a lot of experience对某事非常熟悉，尤其是因为学习过或拥有丰富的经验: Erikson knows the game inside out.Erikson对这项比赛了如指掌。10know your way around something a)to be so familiar with something that you are confident and good at using it对某事非常熟悉，以至于能够熟练自信地运用: She knows her way around a wine list.她对酒单驾轻就熟。 b)to be familiar with a place so that you know where things are对某个地方很熟悉，知道各种东西在哪里: I don’t know my way around the city yet.我还不熟悉这座城市。11make yourself known (to somebody) formal正式 to introduce yourself to someone向某人自我介绍: After she had gone, Paul made himself known to Dr Heatherton.她离开后，Paul向Heatherton博士自我介绍。12recognize [transitive] to be able to recognize someone or something能够辨认出某人或某物: Honestly, it had been so long, I hardly knew her.说实话，时间太久了，我几乎认不出她了。know somebody/something by something He looked very different, but I knew him by his voice.他看起来完全不同了，但我从声音认出了他。► see thesaurus at recognize13know somebody/something as something to have a particular name以某个特定名称称呼: The main street between the castle and the palace is known as ‘the Royal Mile’.城堡和宫殿之间的主街道被称为"皇家一英里"。 Nitrous oxide is commonly known as laughing gas.一氧化二氮通常被称为笑气。14know something from something to understand the difference between one thing and another理解两者之间的区别: Lloyd doesn’t even know his right from his left.Lloyd连左右都分不清。 At what age do children start to know right from wrong?孩子从几岁开始懂得辨别是非？15experience [transitive] to have experience of a particular feeling or situation经历过某种特定的感受或处境: I don’t think he ever knew true happiness.我认为他从未体验过真正的幸福。know about I know all about being poor.我深知贫困是什么滋味。 I’ve never known (=have never experienced) this to happen in all the time I’ve worked here.我在这里工作的整段时间里，从来没有经历过（=have never experienced）这种情况。 I’ve never known him to shout (=he never shouts).我从没见过他大喊大叫（=he never shouts，即"他从不大喊大叫"）。16somebody/something is not known to be something or somebody/something has never been known to do something used to say there is no information that someone or something has particular qualities用于表示没有信息显示某人或某物具有某种特性: This species is not known to be vicious.这一物种并不以凶猛著称。17I’ve known somebody/something to do something or somebody/something has been known to do something used to say that someone does something sometimes or that something happens sometimes, even if it is unusual用于表示某人有时会做某事，或某事有时会发生，即使这并不常见: People have been known to drive 500 miles just to visit the shop.有人曾专程驾车500英里就为了参观这家店。 This type of fish has been known to live for 10 years or more.这种鱼有时可以存活10年甚至更长。SPOKEN PHRASES18you know a)used to emphasize a statement用于强调某一陈述: There’s no excuse, you know.没有任何借口，你是知道的。 b)used to make sure that someone understands what you are saying用于确认对方理解你说的话: I felt very upset, you know?我当时非常难受，你知道吗？ c)used when you want to keep someone’s attention, but cannot think of what to say next用于想保持对方的注意力，但一时想不出下一步说什么时: Well, you know, we’ve got a job to do here.嗯，你知道，我们这里有工作要做。 d)used when you are explaining or describing something and want to give more information用于解释或描述某事时，想要提供更多信息: That flower in the garden – you know, the purple one – what is it?园子里那朵花——你知道的，那朵紫色的——那是什么花？19you know/do you know used to start talking about something, or make someone listen用于开始谈论某事，或让别人注意听: You know, I sometimes feel I don’t know him at all.你知道吗，我有时觉得自己根本不了解他。 Do you know, when I went out this morning that man was still there.你知道吗，我今天早上出门的时候那个男人还在那里。(do) you know what/something? You know what? I think he’s lonely.你猜怎么着？我觉得他很孤独。20I know a)used to agree with someone or to say that you feel the same way用于表示赞同某人或表达有同样的感受: ‘We have to talk about it, Rob.’ ‘Yeah, I know.’"我们得谈谈这件事，Rob。""是啊，我知道。" b)used to say that you have suddenly had an idea, thought of a solution to a problem etc用于表示突然有了一个想法，或想到了解决问题的方案等: I know! Let’s go out for a meal on your birthday.有了！你生日那天我们出去吃饭吧。 c)used to stop someone from interrupting because they have an opinion about what you are saying用于阻止对方打断，因为他们对你说的话持有看法: It sounds silly, I know, but I will explain.我知道听起来很蠢，但我会解释的。 I know, I know, I should have had the car checked out before now.我知道，我知道，我应该早点把车检查一下的。21I don’t know a)used to say that you do not have the answer to a question用于表示不知道某个问题的答案: ‘When did they arrive?’ ‘I don’t know.’"他们什么时候到的？""我不知道。" b)used when you are not sure about something用于对某事不确定时: ‘How old do you think he is?’ ‘Oh, I don’t know – sixty, seventy?’"你觉得他多大岁数了？""哦，我也说不准——六十？七十？"know what/how/whether etc I don’t know whether to call him.我不确定是否该给他打电话。I don’t know that I don’t know that you need a passport for travelling within the EU.我不太确定在欧盟内旅行是否需要护照。 c)used to show that you disagree slightly with what has just been said用于表示对刚才说的话略有异议: ‘I couldn’t live there.’ ‘Oh, I don’t know. It might not be so bad.’"我没法在那里生活。""哦，我觉得未必吧。也许没那么糟。" d) British English used to show that you are slightly annoyed用于表示略感恼火: Oh, I don’t know! You’re hopeless!哎，真是的！你真是没救了！22I don’t know how/why etc used to criticize someone用于批评某人: I don’t know how people could keep an animal in those conditions.我不明白人们怎么能在那种条件下饲养动物。23I don’t know about you, but ... used to give your opinion, decision, or suggestion when you are not sure that the person you are talking to will feel the same way用于表达自己的意见、决定或建议，但不确定对方是否有同感: I don’t know about you, but I’ll be glad when Christmas is over.我不知道你的感受，反正我很期待圣诞节赶快过去。24I don’t know how to thank you/repay you used to thank someone用于感谢某人25wouldn’t you know (it) used to say that something is not at all surprising用于表示某事一点都不令人惊讶: I was told in no uncertain terms that Helen, wouldn’t you know it, didn’t approve.他们毫不含糊地告诉我，Helen——果然不出所料——不赞成。26you don’t know used to emphasize how strong your feelings are用于强调感情之深: You don’t know how much I missed him.你不知道我有多想念他。27I wouldn’t know used to say that you do not know the answer to something and that you are not the person who would know用于表示自己不知道某事的答案，而且自己也不是知道答案的人28what does somebody know? used to say angrily that someone’s opinion is wrong or that it is not important用于愤怒地表示某人的看法是错的或无关紧要的: What does she know about relationships?她对人际关系懂什么？29how should I know?/how am I to know?/how do I know? used to say that it is not reasonable to expect that you should know something用于表示期望自己知道某事是不合理的: ‘When will they be back?’ ‘How should I know?’"他们什么时候回来？""我怎么知道？"30how was I to know?/how did I know? used as an excuse when something bad has happened用于在不好的事情发生后作为借口: How was I to know that the file was confidential?我怎么可能知道那个文件是机密的？31be not to know British English used to say that you do not mind that someone has made a mistake because they could not have avoided it用于表示不介意某人犯了错误，因为那是无法避免的: ‘Sorry, I didn’t realize you had guests.’ ‘That’s all right – you weren’t to know.’"对不起，我没意识到你有客人。""没关系——你不可能知道的。"32I ought to know used to emphasize that you know about something because you made it, experienced it etc用于强调自己知道某事，是因为亲手做过或亲身经历过: ‘Are you sure there’s no sugar in this coffee?’ ‘Of course. I ought to know – I made it!’"你确定这咖啡里没有糖？""当然。我应该知道——是我做的！"33for all I know used to emphasize that you do not know something and say that it is not important to you用于强调自己不知道某事，并表示那对自己无关紧要: I don’t know where she is. She could have been kidnapped for all I know.我不知道她在哪里。就我所知，她甚至可能被绑架了。34not that I know of used to say that you think the answer is ‘no’ but there may be facts that you do not know about用于表示认为答案是"否"，但可能存在自己不了解的情况: ‘Did he call earlier?’ ‘Not that I know of.’"他之前打电话来了吗？""我所知道的是没有。"35Heaven/God/who/goodness knows! a)used to say that you do not know the answer to a question用于表示不知道某个问题的答案: ‘Where do you think he’s disappeared to this time?’ ‘God knows!’"你觉得他这次又跑哪儿去了？""天知道！" Goodness knows why she didn’t go herself.老天才知道她为什么没有亲自去。 b)used to emphasize a statement用于强调某一陈述: Goodness knows, I’ve never liked the woman, but I didn’t know how bad it would be to work with her.说实话，我从来就不喜欢那个女人，但我没想到和她共事会有这么糟糕。36knowing my luck used to say that you expect something bad will happen because you are usually unlucky用于表示因为自己一向运气不好，所以预料坏事将会发生: Knowing my luck, the train will be late.以我的运气，火车肯定会晚点。37(well,) what do you know? used to express surprise用于表达惊讶: Well, what do you know? Look who’s here!哎，你瞧瞧！看看这是谁来了！38if you know what’s good for you used to tell someone that they should do something, or something bad will happen用于告诫某人应该做某事，否则会有不好的后果: You’ll keep your mouth shut about this if you know what’s good for you!如果你识时务的话，就对此闭嘴！39you know who/what used to talk about someone or something without mentioning their name用于不提名字地谈论某人或某物: I saw you know who yesterday.我昨天看到那个你懂的是谁了。40there’s no knowing it is impossible to know不可能知道；无从得知: There was no knowing who might have read the letter.无从得知那封信可能被谁看到过。41let it be known/make it known (that) formal正式 to make sure that people know something, especially by getting someone else to tell them确保人们了解某件事，尤其是通过让别人来告知: Farrar let it be known that he saw nothing wrong with the proposed solutions.Farrar让人们知道他认为所提议的解决方案没有任何问题。42not want to know British English informal非正式 to not be interested in someone and what they want to say对某人及其想说的话不感兴趣: She’d approached several model agencies but they just didn’t want to know.她找过几家模特经纪公司，但他们根本不感兴趣。43know the score informal非正式 to understand a situation and all the good and bad features about it了解某种情况及其所有优缺点: I knew the score before I started the job.在开始这份工作之前，我就清楚实际情况了。44not know what hit you informal非正式 to feel shocked and confused because something happens when you are not expecting it to因预料之外的事情发生而感到震惊和茫然: Poor man – I don’t think he knew what hit him.可怜的家伙——我觉得他完全不知道发生了什么事。45know your place used to say that someone understands that they are less important than other people – usually used humorously用于表示某人明白自己的身份地位不如他人——通常带幽默意味: I know my place. I’ll get back to the kitchen!我知道自己的本分，我回厨房去！46know no bounds formal正式 if a feeling or quality knows no bounds, it is not limited in any way如果某种感情或特质"knows no bounds"（无边无际），则表示它没有任何限制: His enthusiasm knew no bounds.他的热情无边无际。47somebody knows best used to say that someone should be obeyed or that their way of doing things should be accepted because they are experienced用于表示某人因经验丰富，应当服从其意见或接受其做法: She always thinks she knows best.她总认为自己最懂。 I have always hated the attitude that ‘the doctor knows best’.我一直讨厌"医生最懂"这种态度。48before you know it used to say that something happens very quickly and when you are not expecting it用于表示某事发生得非常快，在毫无预期之时: You’ll be home before you know it.眨眼间你就到家了。49know different/otherwise informal非正式 to know that the opposite of something is true知道某事的反面才是真实的: He told people he didn’t care about her, but deep down he knew different.他告诉别人说他不在乎她，但内心深处他知道事实并非如此。50know your own mind to be confident and have firm ideas about what you want and like对自己的喜好和需求有自信、有明确的想法51you will be delighted/pleased etc to know (that) formal正式 used before you give someone information that they will be pleased to hear用于在告知对方会感到高兴的信息之前: You will be pleased to know that we have accepted your offer.您一定很高兴得知，我们已接受您的提议。52it’s ... , Jim, but not as we know it informal humorous非正式 幽默 used to say that something is completely different from what we would normally expect something of its type to be用于表示某事与同类事物的常规预期完全不同: It’s the blues, Jim, but not as we know it.这是布鲁斯，Jim，但和我们所熟知的完全不同。 → the next thing I/she etc knew at next1(6)GRAMMAR: Using the progressive语法：进行时的用法• Know is not used in the progressive. You say: · I know who that is.· Do you know this song? ✗Don’t say: I’m knowing who that is. | Are you knowing this song?• know 不用于进行时。应说：· I know who that is.（我知道那是谁。）· Do you know this song?（你知道这首歌吗？）✗不要说：I'm knowing who that is. | Are you knowing this song?• However, the participle knowing is sometimes used: · Knowing she would appreciate it, I offered to help.Grammar guide ‒ VERBS• 不过，分词 knowing 有时可以使用：· Knowing she would appreciate it, I offered to help.（知道她会感激，我主动提出帮忙。）语法指南——动词
查看全部语言翻译1have information [intransitive, transitive] to have information about something了解某事；知道某事: Who knows the answer?谁知道答案？ There are instructions telling you everything you need to know.有说明书告诉你需要知道的一切。 Didn’t you know that?你不知道那件事吗？know what/how/where etc Do you know what time it is?你知道现在几点了吗？ I don’t know where to go.我不知道该去哪里。know (something/nothing etc) about something I need to know more about the job before I decide whether to apply for it.我需要更多地了解这份工作，然后再决定是否申请。 Little is known about the author’s childhood.关于这位作者的童年，人们知之甚少。 I know all about David and what he’s been up to!我对David以及他最近在做什么了如指掌！know (something/nothing etc) of something I wonder if he knew of the plan?我想知道他是否知道这个计划？ Do you know of any good restaurants in the area?你知道这一带有什么好的餐厅吗？ You know nothing of this business.你对这件事一无所知。know (that) We know that greenhouse gases can affect the climate.我们知道温室气体会影响气候。 Let me know (=tell me) what time you’re planning to arrive.告诉我（=let me know 即"告诉我"）你打算几点到。 I thought you’d want to know immediately.我以为你会想立刻知道的。 If you must know, I was with James last night (=used when you are angry because someone wants to know something).如果你非要知道的话，我昨晚和James在一起（=用于因别人追问而感到恼火时）。without somebody/somebody’s knowing He slipped out of the house without his parents knowing (=secretly).他悄悄溜出了家门，父母全然不知（=secretly 即"偷偷地"）。 How did he know (=how did he find information about) our names?他是怎么知道（=怎么查到）我们的名字的？as you/we know ‘I’m divorced, as you know,’ she said briefly."我离婚了，你是知道的，"她简短地说。be known to do something Smoking is known to increase a person’s risk of developing lung cancer.众所周知，吸烟会增加患肺癌的风险。GRAMMAR语法In more formal English, you say it is known that or it is known who/why/what etc: · It is known that the drug causes infertility.· It is not known how many people were killed.在较正式的英语中，说 it is known that 或 it is known who/why/what 等：· It is known that the drug causes infertility.（已知该药物导致不育。）· It is not known how many people were killed.（有多少人遇难，目前不得而知。）2be sure [intransitive, transitive] to be sure about something对某事感到确定: ‘Are you seeing Jim tomorrow?’ ‘I don’t know yet.’"你明天会见Jim吗？""我还不知道。"know (that) I know I won’t get the job.我知道我不会得到这份工作的。 Ruth knew that she couldn’t continue in the relationship for much longer.Ruth知道她无法在这段关系中继续太久了。know what/why/how etc I know exactly what you need!我确切地知道你需要什么！know if/whether The boy stared at him uncertainly, not knowing whether to believe him.男孩不确定地盯着他看，不知道是否该相信他。 I don’t know if I’ll be able to come.我不确定我能否来。knowing (that) She forced herself to go out, knowing that she would feel more depressed if she stayed at home.她强迫自己出门，因为她知道如果待在家里会更加抑郁。 How do you know (=what makes you sure) he won’t do it again?你怎么知道（=你凭什么确定）他不会再这样做？know somebody/something to be something It’s a story that I know to be true.这是一个我确信是真实的故事。 I think he’s still living in Chicago, but I don’t know for sure.我认为他还住在芝加哥，但我不能确定。 As far as I know, they’re arriving on Saturday (=used when you think something is true but are not sure).据我所知，他们将在周六到达（=用于认为某事可能属实但不确定时）。 I doubt I’ll win, but you never know (=used when you cannot be sure about something, but something good might happen).我不觉得我会赢，但世事难料（=you never know，用于无法确定某事但好事或许会发生时）。► see thesaurus at sure3be familiar with somebody/something [transitive] to be familiar with a person, place etc与某人、某地等相熟: I’ve known her for twenty years.我认识她已有二十年了。 Are you really thinking of leaving Kevin for a guy you barely know?你真的在考虑为了一个几乎不认识的男人而离开Kevin吗？ Do you know the nightclub on the corner of Maine Street?你知道Maine Street转角处那家夜总会吗？ I don’t know him very well.我不太了解他。 We’re still getting to know each other really.我们其实还在互相了解中。know somebody from something I know her from school.我是在学校认识她的。know somebody as something Many people knew him as a local businessman.许多人认识他，知道他是当地的一名商人。 Hepburn is best known for (=people are most likely to be familiar with) her roles in classic films such as ‘My Fair Lady’.赫本最为人所知的（=best known for，即"人们最熟悉的"）是她在《窈窕淑女》等经典电影中的角色。 The museum outlines the development of the city as we know it today.博物馆概述了这座城市发展成我们今天所熟知的样子的过程。 Does he know the way to your house (=know how to get there)?他知道去你家的路（=know the way，即"知道怎么到那里"）吗？ I grew up here; I know the place like the back of my hand (=I know it very well).我在这里长大，对这个地方了如指掌（=know the place like the back of my hand，即"非常熟悉"）。 I only know her by sight (=I often see her but have not really spoken to her).我只是见过她的面（=know by sight，即"经常见到但没有真正交谈过"）。 She didn’t know me from Adam (=she did not know me at all), but she was really helpful.她对我完全陌生（=didn't know me from Adam，即"完全不认识我"），但她还是非常热心地帮忙。knowing somebody/if I know somebody (=used to say that you expect someone to behave in a particular way because you know them well)（=用于表示因为了解某人，所以预料他们会以某种方式行事） Knowing Sumi, my note’s probably still in her pocket.了解Sumi的话，我的便条大概还在她口袋里呢。 He’ll be chatting up the women, if I know Ron!如果我没看错Ron的话，他肯定在向女士们献殷勤呢！4realize [intransitive, transitive] to realize, find out about, or understand something意识到、发现或理解某事: She knew the risks involved.她清楚其中的风险。 Hardly knowing what he was doing, Nick pulled out a cigarette.Nick几乎不知道自己在做什么，摸出了一支烟。know (that) Suddenly she knew that something was terribly wrong.她突然意识到有什么地方严重出错了。know how/what/why etc I didn’t know how difficult it would be.我没想到会这么难。know to do something She knows not to tell anyone.她知道不能告诉任何人。(do you) know what I mean? (=used to ask if someone understands or has the same feeling as you)（=用于询问对方是否理解你的意思或有同样的感受） It’s nice to have a change sometimes. Know what I mean?有时候换个口味挺好的。你明白我的意思吗？if you know what I mean Sometimes it’s better not to ask too many questions, if you know what I mean.有时候不要问太多问题更好，你懂我的意思吧。 ‘I just felt so tired.’ ‘Yeah, I know what you mean.’ (=I understand, because I have had the same experience)"我就是觉得太累了。""对，我懂你的意思。"（=I know what you mean，即"我理解，因为我有过同样的经历"） I should have known it wouldn’t be easy.我本应该知道这不会容易的。 I might have known (=I am annoyed but not surprised) you would take that attitude.我早该想到（=I might have known，即"我感到恼火但并不惊讶"）你会那么个态度。know exactly/precisely I know exactly how you feel.我完全理解你的感受。know perfectly well/full well/only too well He knew full well that what he was doing was dangerous.他非常清楚地知道自己在做的事情是危险的。somebody will never know/no one will ever know Just take it. No one will ever know.就拿去吧。谁也不会知道的。 ‘That’s not what I mean, and you know it,’ he protested."那不是我的意思，你心里清楚，"他抗议道。if I had known/if I’d have known I wouldn’t have come if I’d known you were so busy.如果我知道你这么忙，我就不会来了。 Little did she know (=she did not know) that years later she would have her own pool and luxury apartment in Florida.她当时全然不知道（=Little did she know，即"她不知道"），多年后她将在佛罗里达拥有自己的游泳池和豪华公寓。 She knew nothing of what had happened earlier that day.她对那天早些时候发生的事一无所知。5skill/experience [transitive] to have learned a lot about something or be skilful and experienced at doing something对某事有深入了解，或在做某事方面技艺娴熟、经验丰富: I don’t know enough history to make a comparison.我对历史了解不够，无法进行比较。 I taught him everything he knows.他所知道的一切都是我教的。 I know some French.我会一些法语。know how to do something Do you know how to change a fuse?你会换保险丝吗？know about I have a friend who knows about antiques.我有个朋友懂骨董。 Bessie knew nothing about football.Bessie对足球一无所知。 Politicians know all about the power of language.政客们深知语言的力量。 I don’t know the first thing about (=I know nothing about) looking after children.我对照顾孩子一窍不通（=don't know the first thing about，即"完全不了解"）。 I don’t really know what I’m doing (=I do not have enough skill and experience to deal with something) when it comes to cars.说到车，我真的不知道该怎么弄（=don't know what I'm doing，即"没有足够的技能和经验来处理某事"）。 The staff are dedicated people who clearly know what they are talking about.工作人员都是尽职尽责的人，显然对自己所谈的事情了如指掌。 She knew from experience that exams made her very nervous.她从经验中知道，考试会让她非常紧张。know your job/subject/stuff (=be good at and know all you should about a job or subject)（=擅长并全面掌握某项工作或学科所需知识） a decent manager who knows the ropes (=has a lot of experience)一位熟悉套路（=knows the ropes，即"经验丰富"）的称职经理 My cousin knows a thing or two (=knows a lot) about golf.我表弟对高尔夫颇有了解（=knows a thing or two，即"了解很多"）。know a song/tune/poem etc (=be able to sing a song, play a tune, say a poem etc because you have learned it)（=因为已经学过，所以能演唱一首歌、演奏一段曲子、朗诵一首诗等） Do you know all the words to ‘As Time Goes By’?你会唱《岁月流逝》（As Time Goes By）的全部歌词吗？6know somebody’s qualities [transitive] to think that someone has particular qualities认为某人具有某种特质know somebody as something I knew him as a hard-working, modest, and honest politician.在我认识的他是一位勤奋、谦虚、诚实的政治家。know somebody for something In fact, I knew her for a tough-minded young woman.事实上，我认为她是一个意志坚强的年轻女性。7know better a)to be wise or experienced enough not to do something有足够的判断力或经验，懂得不去做某事: It’s just prejudice from educated people who should know better.这不过是受过教育的人身上的偏见，他们本该更明智的。 Eva knew better than to interrupt one of Mark’s jokes.Eva很明智，知道不应该打断Mark讲笑话。 b)to know or think you know more than someone else比别人知道得更多，或自以为比别人了解得更多: Everyone thought it was an accident. Only Dan knew better.每个人都以为那是意外，只有Dan知道事实并非如此。8not know any better used to say that someone does something bad or stupid because they have not been told or taught that it is wrong用于表示某人做坏事或蠢事，是因为从没有人告诉或教导他们那样做是错的: Drugs are being sold to children who don’t know any better.毒品正被卖给那些不知道这有什么问题的孩子们。9know something inside out (also know something backwards British English, know something backwards and forwards American English) to be very familiar with something, especially because you have learned about it or because you have a lot of experience对某事非常熟悉，尤其是因为学习过或拥有丰富的经验: Erikson knows the game inside out.Erikson对这项比赛了如指掌。10know your way around something a)to be so familiar with something that you are confident and good at using it对某事非常熟悉，以至于能够熟练自信地运用: She knows her way around a wine list.她对酒单驾轻就熟。 b)to be familiar with a place so that you know where things are对某个地方很熟悉，知道各种东西在哪里: I don’t know my way around the city yet.我还不熟悉这座城市。11make yourself known (to somebody) formal正式 to introduce yourself to someone向某人自我介绍: After she had gone, Paul made himself known to Dr Heatherton.她离开后，Paul向Heatherton博士自我介绍。12recognize [transitive] to be able to recognize someone or something能够辨认出某人或某物: Honestly, it had been so long, I hardly knew her.说实话，时间太久了，我几乎认不出她了。know somebody/something by something He looked very different, but I knew him by his voice.他看起来完全不同了，但我从声音认出了他。► see thesaurus at recognize13know somebody/something as something to have a particular name以某个特定名称称呼: The main street between the castle and the palace is known as ‘the Royal Mile’.城堡和宫殿之间的主街道被称为"皇家一英里"。 Nitrous oxide is commonly known as laughing gas.一氧化二氮通常被称为笑气。14know something from something to understand the difference between one thing and another理解两者之间的区别: Lloyd doesn’t even know his right from his left.Lloyd连左右都分不清。 At what age do children start to know right from wrong?孩子从几岁开始懂得辨别是非？15experience [transitive] to have experience of a particular feeling or situation经历过某种特定的感受或处境: I don’t think he ever knew true happiness.我认为他从未体验过真正的幸福。know about I know all about being poor.我深知贫困是什么滋味。 I’ve never known (=have never experienced) this to happen in all the time I’ve worked here.我在这里工作的整段时间里，从来没有经历过（=have never experienced）这种情况。 I’ve never known him to shout (=he never shouts).我从没见过他大喊大叫（=he never shouts，即"他从不大喊大叫"）。16somebody/something is not known to be something or somebody/something has never been known to do something used to say there is no information that someone or something has particular qualities用于表示没有信息显示某人或某物具有某种特性: This species is not known to be vicious.这一物种并不以凶猛著称。17I’ve known somebody/something to do something or somebody/something has been known to do something used to say that someone does something sometimes or that something happens sometimes, even if it is unusual用于表示某人有时会做某事，或某事有时会发生，即使这并不常见: People have been known to drive 500 miles just to visit the shop.有人曾专程驾车500英里就为了参观这家店。 This type of fish has been known to live for 10 years or more.这种鱼有时可以存活10年甚至更长。SPOKEN PHRASES18you know a)used to emphasize a statement用于强调某一陈述: There’s no excuse, you know.没有任何借口，你是知道的。 b)used to make sure that someone understands what you are saying用于确认对方理解你说的话: I felt very upset, you know?我当时非常难受，你知道吗？ c)used when you want to keep someone’s attention, but cannot think of what to say next用于想保持对方的注意力，但一时想不出下一步说什么时: Well, you know, we’ve got a job to do here.嗯，你知道，我们这里有工作要做。 d)used when you are explaining or describing something and want to give more information用于解释或描述某事时，想要提供更多信息: That flower in the garden – you know, the purple one – what is it?园子里那朵花——你知道的，那朵紫色的——那是什么花？19you know/do you know used to start talking about something, or make someone listen用于开始谈论某事，或让别人注意听: You know, I sometimes feel I don’t know him at all.你知道吗，我有时觉得自己根本不了解他。 Do you know, when I went out this morning that man was still there.你知道吗，我今天早上出门的时候那个男人还在那里。(do) you know what/something? You know what? I think he’s lonely.你猜怎么着？我觉得他很孤独。20I know a)used to agree with someone or to say that you feel the same way用于表示赞同某人或表达有同样的感受: ‘We have to talk about it, Rob.’ ‘Yeah, I know.’"我们得谈谈这件事，Rob。""是啊，我知道。" b)used to say that you have suddenly had an idea, thought of a solution to a problem etc用于表示突然有了一个想法，或想到了解决问题的方案等: I know! Let’s go out for a meal on your birthday.有了！你生日那天我们出去吃饭吧。 c)used to stop someone from interrupting because they have an opinion about what you are saying用于阻止对方打断，因为他们对你说的话持有看法: It sounds silly, I know, but I will explain.我知道听起来很蠢，但我会解释的。 I know, I know, I should have had the car checked out before now.我知道，我知道，我应该早点把车检查一下的。21I don’t know a)used to say that you do not have the answer to a question用于表示不知道某个问题的答案: ‘When did they arrive?’ ‘I don’t know.’"他们什么时候到的？""我不知道。" b)used when you are not sure about something用于对某事不确定时: ‘How old do you think he is?’ ‘Oh, I don’t know – sixty, seventy?’"你觉得他多大岁数了？""哦，我也说不准——六十？七十？"know what/how/whether etc I don’t know whether to call him.我不确定是否该给他打电话。I don’t know that I don’t know that you need a passport for travelling within the EU.我不太确定在欧盟内旅行是否需要护照。 c)used to show that you disagree slightly with what has just been said用于表示对刚才说的话略有异议: ‘I couldn’t live there.’ ‘Oh, I don’t know. It might not be so bad.’"我没法在那里生活。""哦，我觉得未必吧。也许没那么糟。" d) British English used to show that you are slightly annoyed用于表示略感恼火: Oh, I don’t know! You’re hopeless!哎，真是的！你真是没救了！22I don’t know how/why etc used to criticize someone用于批评某人: I don’t know how people could keep an animal in those conditions.我不明白人们怎么能在那种条件下饲养动物。23I don’t know about you, but ... used to give your opinion, decision, or suggestion when you are not sure that the person you are talking to will feel the same way用于表达自己的意见、决定或建议，但不确定对方是否有同感: I don’t know about you, but I’ll be glad when Christmas is over.我不知道你的感受，反正我很期待圣诞节赶快过去。24I don’t know how to thank you/repay you used to thank someone用于感谢某人25wouldn’t you know (it) used to say that something is not at all surprising用于表示某事一点都不令人惊讶: I was told in no uncertain terms that Helen, wouldn’t you know it, didn’t approve.他们毫不含糊地告诉我，Helen——果然不出所料——不赞成。26you don’t know used to emphasize how strong your feelings are用于强调感情之深: You don’t know how much I missed him.你不知道我有多想念他。27I wouldn’t know used to say that you do not know the answer to something and that you are not the person who would know用于表示自己不知道某事的答案，而且自己也不是知道答案的人28what does somebody know? used to say angrily that someone’s opinion is wrong or that it is not important用于愤怒地表示某人的看法是错的或无关紧要的: What does she know about relationships?她对人际关系懂什么？29how should I know?/how am I to know?/how do I know? used to say that it is not reasonable to expect that you should know something用于表示期望自己知道某事是不合理的: ‘When will they be back?’ ‘How should I know?’"他们什么时候回来？""我怎么知道？"30how was I to know?/how did I know? used as an excuse when something bad has happened用于在不好的事情发生后作为借口: How was I to know that the file was confidential?我怎么可能知道那个文件是机密的？31be not to know British English used to say that you do not mind that someone has made a mistake because they could not have avoided it用于表示不介意某人犯了错误，因为那是无法避免的: ‘Sorry, I didn’t realize you had guests.’ ‘That’s all right – you weren’t to know.’"对不起，我没意识到你有客人。""没关系——你不可能知道的。"32I ought to know used to emphasize that you know about something because you made it, experienced it etc用于强调自己知道某事，是因为亲手做过或亲身经历过: ‘Are you sure there’s no sugar in this coffee?’ ‘Of course. I ought to know – I made it!’"你确定这咖啡里没有糖？""当然。我应该知道——是我做的！"33for all I know used to emphasize that you do not know something and say that it is not important to you用于强调自己不知道某事，并表示那对自己无关紧要: I don’t know where she is. She could have been kidnapped for all I know.我不知道她在哪里。就我所知，她甚至可能被绑架了。34not that I know of used to say that you think the answer is ‘no’ but there may be facts that you do not know about用于表示认为答案是"否"，但可能存在自己不了解的情况: ‘Did he call earlier?’ ‘Not that I know of.’"他之前打电话来了吗？""我所知道的是没有。"35Heaven/God/who/goodness knows! a)used to say that you do not know the answer to a question用于表示不知道某个问题的答案: ‘Where do you think he’s disappeared to this time?’ ‘God knows!’"你觉得他这次又跑哪儿去了？""天知道！" Goodness knows why she didn’t go herself.老天才知道她为什么没有亲自去。 b)used to emphasize a statement用于强调某一陈述: Goodness knows, I’ve never liked the woman, but I didn’t know how bad it would be to work with her.说实话，我从来就不喜欢那个女人，但我没想到和她共事会有这么糟糕。36knowing my luck used to say that you expect something bad will happen because you are usually unlucky用于表示因为自己一向运气不好，所以预料坏事将会发生: Knowing my luck, the train will be late.以我的运气，火车肯定会晚点。37(well,) what do you know? used to express surprise用于表达惊讶: Well, what do you know? Look who’s here!哎，你瞧瞧！看看这是谁来了！38if you know what’s good for you used to tell someone that they should do something, or something bad will happen用于告诫某人应该做某事，否则会有不好的后果: You’ll keep your mouth shut about this if you know what’s good for you!如果你识时务的话，就对此闭嘴！39you know who/what used to talk about someone or something without mentioning their name用于不提名字地谈论某人或某物: I saw you know who yesterday.我昨天看到那个你懂的是谁了。40there’s no knowing it is impossible to know不可能知道；无从得知: There was no knowing who might have read the letter.无从得知那封信可能被谁看到过。41let it be known/make it known (that) formal正式 to make sure that people know something, especially by getting someone else to tell them确保人们了解某件事，尤其是通过让别人来告知: Farrar let it be known that he saw nothing wrong with the proposed solutions.Farrar让人们知道他认为所提议的解决方案没有任何问题。42not want to know British English informal非正式 to not be interested in someone and what they want to say对某人及其想说的话不感兴趣: She’d approached several model agencies but they just didn’t want to know.她找过几家模特经纪公司，但他们根本不感兴趣。43know the score informal非正式 to understand a situation and all the good and bad features about it了解某种情况及其所有优缺点: I knew the score before I started the job.在开始这份工作之前，我就清楚实际情况了。44not know what hit you informal非正式 to feel shocked and confused because something happens when you are not expecting it to因预料之外的事情发生而感到震惊和茫然: Poor man – I don’t think he knew what hit him.可怜的家伙——我觉得他完全不知道发生了什么事。45know your place used to say that someone understands that they are less important than other people – usually used humorously用于表示某人明白自己的身份地位不如他人——通常带幽默意味: I know my place. I’ll get back to the kitchen!我知道自己的本分，我回厨房去！46know no bounds formal正式 if a feeling or quality knows no bounds, it is not limited in any way如果某种感情或特质"knows no bounds"（无边无际），则表示它没有任何限制: His enthusiasm knew no bounds.他的热情无边无际。47somebody knows best used to say that someone should be obeyed or that their way of doing things should be accepted because they are experienced用于表示某人因经验丰富，应当服从其意见或接受其做法: She always thinks she knows best.她总认为自己最懂。 I have always hated the attitude that ‘the doctor knows best’.我一直讨厌"医生最懂"这种态度。48before you know it used to say that something happens very quickly and when you are not expecting it用于表示某事发生得非常快，在毫无预期之时: You’ll be home before you know it.眨眼间你就到家了。49know different/otherwise informal非正式 to know that the opposite of something is true知道某事的反面才是真实的: He told people he didn’t care about her, but deep down he knew different.他告诉别人说他不在乎她，但内心深处他知道事实并非如此。50know your own mind to be confident and have firm ideas about what you want and like对自己的喜好和需求有自信、有明确的想法51you will be delighted/pleased etc to know (that) formal正式 used before you give someone information that they will be pleased to hear用于在告知对方会感到高兴的信息之前: You will be pleased to know that we have accepted your offer.您一定很高兴得知，我们已接受您的提议。52it’s ... , Jim, but not as we know it informal humorous非正式 幽默 used to say that something is completely different from what we would normally expect something of its type to be用于表示某事与同类事物的常规预期完全不同: It’s the blues, Jim, but not as we know it.这是布鲁斯，Jim，但和我们所熟知的完全不同。 → the next thing I/she etc knew at next1(6)GRAMMAR: Using the progressive语法：进行时的用法• Know is not used in the progressive. You say: · I know who that is.· Do you know this song? ✗Don’t say: I’m knowing who that is. | Are you knowing this song?• know 不用于进行时。应说：· I know who that is.（我知道那是谁。）· Do you know this song?（你知道这首歌吗？）✗不要说：I'm knowing who that is. | Are you knowing this song?• However, the participle knowing is sometimes used: · Knowing she would appreciate it, I offered to help.Grammar guide ‒ VERBS• 不过，分词 knowing 有时可以使用：· Knowing she would appreciate it, I offered to help.（知道她会感激，我主动提出帮忙。）语法指南——动词