could 的英语意思
couldcould /kəd; strong kʊd/ modal verb (negative short form couldn’t) 
查看全部语言翻译1past ability used as the past tense of ‘can’ to say what someone was able to do or was allowed to do in the past用作"can"的过去式，表示某人过去能够做某事或被允许做某事: 
By the time she was eight, she could read Greek and Latin.到她八岁时，她已经能读希腊语和拉丁语了。 In those days you could buy a box of cigars for a dollar.那时候，一美元就能买一盒雪茄。 Could you hear what I was saying?你能听到我说的话吗？ I couldn’t get tickets after all, they were sold out.我终究没能买到票，票已经卖完了。 I knew I couldn’t afford the rent.我知道自己付不起房租。 The teacher said we could all go home.老师说我们都可以回家了。2possibility a)used to say that something is possible or might happen用于表示某事是可能的或可能发生的: Most accidents in the home could be prevented.家中发生的大多数事故本可以预防。 It could be weeks before we get a reply.我们可能要等好几周才能收到回复。 If you’re not careful, you could get into even worse trouble.如果你不小心，可能会陷入更大的麻烦。 A faulty connection could easily (=would be likely to) cause a fire.接触不良很容易（=很有可能）引发火灾。 b)used to say that something was a possibility in the past, but did not actually happen用于表示某事过去有可能发生，但实际上并未发生: Somebody could have been killed.本来可能有人会丧命的。 I could have warned you if I had known where you were.如果我知道你在哪里，本可以提前警告你的。 He could have escaped, but he chose to fight.他本可以逃走，但他选择了战斗。3emphasizing your feelings spoken口语 used to emphasize how happy, angry etc you are by saying how you want to express your feelings通过表达想如何宣泄情绪来强调自己有多高兴、愤怒等: He irritates me so much I could scream.他真的太让我烦了，我快要抓狂了。 I was so angry I could have killed her.我当时气得恨不得杀了她。 I was so relieved I could have kissed them all.我如释重负，恨不得把他们都亲一遍。4requesting spoken口语 used to make a polite request用于提出礼貌的请求: Could you help me with these boxes?你能帮我搬这些箱子吗？ Could I have a drink of water, please?请问我可以喝点水吗？ How about Sam? Could he come along too?那Sam怎么样？他也能一起来吗？ I wonder if I could just ask you to sign this.不知道能否请您在这里签个名。5suggesting used to suggest doing something用于提出建议: You could ask your doctor for a check-up.你可以去找医生做个检查。 You could always try phoning her at the office.你总可以试着打电话到她办公室找她。 Maybe we could get together sometime next week?也许我们下周找个时间聚一聚？ Couldn’t you get one of your friends to help you?你能不能让你的某个朋友来帮你？6annoyance spoken口语 used to show that you are annoyed about someone’s behaviour用于表达对某人行为的不满: You could have told me you were going to be late (=you should have told me but you did not)!你本可以告诉我你要迟到的（=你本应该告诉我，但没有）！ You could at least say that you’re sorry.你至少可以说句对不起。 How could you be so stupid!你怎么能这么蠢！7couldn’t be better/worse/more pleased etc used to emphasize how good, bad etc something is用于强调某事物有多好、多坏等: Their lifestyles couldn’t be more different.他们的生活方式截然不同。 ‘How are things?’ ‘Fine! Couldn’t be better.’"近况如何？""好极了！再好不过了。" Ordering online couldn’t be simpler.网上下单再简单不过了。8I couldn’t British English spoken口语 used to politely say that you do not want any more food or drink用于礼貌地表示不想再吃或再喝: ‘Would you like another piece of pie?’ ‘Oh, no thanks, I couldn’t.’"再来一块派吗？""哦，不了，谢谢，我真的吃不下了。"9could do with something spoken口语 to need or want something需要或想要某物: I could do with a hot drink.我真想来杯热饮。 → could do worse (than) at worse1(5), → couldn’t care less at care2(5), → couldn’t agree more at agree(1)GRAMMAR: Patterns with could语法：could 的用法模式• You use could with the base form of the verb (=the infinitive without ‘to’): · The teacher said we could go home.· He could be in his office.• could 与动词原形（=不带"to"的不定式）连用：· 老师说我们可以回家。· 他可能在办公室。• You say Could I? when asking for permission: · Could I use your phone?• 请求许可时用 Could I?：· 我可以用一下你的电话吗？• You say that something could have happened: · The team could have won.· They could already have gone home.• 表示某事本可能发生时用 could have：· 这支队伍本可能赢的。· 他们可能已经回家了。• You use couldn’t or could not in negative sentences: · We couldn’t see anything.· That could not be true.Grammar guide ‒ VERBS• 否定句中用 couldn't 或 could not：· 我们什么也看不见。· 那不可能是真的。语法指南 ‒ 动词
查看全部语言翻译1past ability used as the past tense of ‘can’ to say what someone was able to do or was allowed to do in the past用作"can"的过去式，表示某人过去能够做某事或被允许做某事: By the time she was eight, she could read Greek and Latin.到她八岁时，她已经能读希腊语和拉丁语了。 In those days you could buy a box of cigars for a dollar.那时候，一美元就能买一盒雪茄。 Could you hear what I was saying?你能听到我说的话吗？ I couldn’t get tickets after all, they were sold out.我终究没能买到票，票已经卖完了。 I knew I couldn’t afford the rent.我知道自己付不起房租。 The teacher said we could all go home.老师说我们都可以回家了。2possibility a)used to say that something is possible or might happen用于表示某事是可能的或可能发生的: Most accidents in the home could be prevented.家中发生的大多数事故本可以预防。 It could be weeks before we get a reply.我们可能要等好几周才能收到回复。 If you’re not careful, you could get into even worse trouble.如果你不小心，可能会陷入更大的麻烦。 A faulty connection could easily (=would be likely to) cause a fire.接触不良很容易（=很有可能）引发火灾。 b)used to say that something was a possibility in the past, but did not actually happen用于表示某事过去有可能发生，但实际上并未发生: Somebody could have been killed.本来可能有人会丧命的。 I could have warned you if I had known where you were.如果我知道你在哪里，本可以提前警告你的。 He could have escaped, but he chose to fight.他本可以逃走，但他选择了战斗。3emphasizing your feelings spoken口语 used to emphasize how happy, angry etc you are by saying how you want to express your feelings通过表达想如何宣泄情绪来强调自己有多高兴、愤怒等: He irritates me so much I could scream.他真的太让我烦了，我快要抓狂了。 I was so angry I could have killed her.我当时气得恨不得杀了她。 I was so relieved I could have kissed them all.我如释重负，恨不得把他们都亲一遍。4requesting spoken口语 used to make a polite request用于提出礼貌的请求: Could you help me with these boxes?你能帮我搬这些箱子吗？ Could I have a drink of water, please?请问我可以喝点水吗？ How about Sam? Could he come along too?那Sam怎么样？他也能一起来吗？ I wonder if I could just ask you to sign this.不知道能否请您在这里签个名。5suggesting used to suggest doing something用于提出建议: You could ask your doctor for a check-up.你可以去找医生做个检查。 You could always try phoning her at the office.你总可以试着打电话到她办公室找她。 Maybe we could get together sometime next week?也许我们下周找个时间聚一聚？ Couldn’t you get one of your friends to help you?你能不能让你的某个朋友来帮你？6annoyance spoken口语 used to show that you are annoyed about someone’s behaviour用于表达对某人行为的不满: You could have told me you were going to be late (=you should have told me but you did not)!你本可以告诉我你要迟到的（=你本应该告诉我，但没有）！ You could at least say that you’re sorry.你至少可以说句对不起。 How could you be so stupid!你怎么能这么蠢！7couldn’t be better/worse/more pleased etc used to emphasize how good, bad etc something is用于强调某事物有多好、多坏等: Their lifestyles couldn’t be more different.他们的生活方式截然不同。 ‘How are things?’ ‘Fine! Couldn’t be better.’"近况如何？""好极了！再好不过了。" Ordering online couldn’t be simpler.网上下单再简单不过了。8I couldn’t British English spoken口语 used to politely say that you do not want any more food or drink用于礼貌地表示不想再吃或再喝: ‘Would you like another piece of pie?’ ‘Oh, no thanks, I couldn’t.’"再来一块派吗？""哦，不了，谢谢，我真的吃不下了。"9could do with something spoken口语 to need or want something需要或想要某物: I could do with a hot drink.我真想来杯热饮。 → could do worse (than) at worse1(5), → couldn’t care less at care2(5), → couldn’t agree more at agree(1)GRAMMAR: Patterns with could语法：could 的用法模式• You use could with the base form of the verb (=the infinitive without ‘to’): · The teacher said we could go home.· He could be in his office.• could 与动词原形（=不带"to"的不定式）连用：· 老师说我们可以回家。· 他可能在办公室。• You say Could I? when asking for permission: · Could I use your phone?• 请求许可时用 Could I?：· 我可以用一下你的电话吗？• You say that something could have happened: · The team could have won.· They could already have gone home.• 表示某事本可能发生时用 could have：· 这支队伍本可能赢的。· 他们可能已经回家了。• You use couldn’t or could not in negative sentences: · We couldn’t see anything.· That could not be true.Grammar guide ‒ VERBS• 否定句中用 couldn't 或 could not：· 我们什么也看不见。· 那不可能是真的。语法指南 ‒ 动词