past perfect 的英语意思
past perfectˌpast ˈperfect noun [singular] technical术语 
查看全部语言翻译 the form of a verb that shows that the action described by the verb was completed before a particular time in the past, formed in English with ‘had’ and a past participle过去完成时：动词的一种形式，表示所描述的动作在过去某一时间点之前已经完成，在英语中由"had"加过去分词构成—past perfect adjective
查看全部语言翻译 the form of a verb that shows that the action described by the verb was completed before a particular time in the past, formed in English with ‘had’ and a past participle过去完成时：动词的一种形式，表示所描述的动作在过去某一时间点之前已经完成，在英语中由"had"加过去分词构成—past perfect adjective