"江苏省怀仁中学高一英语 学生版 m2u3 过去完成时 "一.结构 had +done.二.概念 及 用法1
过去完成时表示一个动作或状态在过去某一时间或动作之前已经完成或结束,即发生在“过去的过去”
1) When I woke up, it ____________(stop)raining
2) He_________(leave) when I arrived
过去完成时是一个相对的时态,表示的是“过去的过去”,只有和过去某一时间或某一动作相比较时才使用它
1) She told me that she____________ (write)a new novel
2) I found the watch which I___________(lose) 2)过去完成时常与一个表示过去的时间状语连用,它不能离开过去时间而独立存在
此时多与 already,yet,still,just,before,never 等时间副词及 by,before,until 等引导的短语或从句连用
1) Before she came to China, Amy ______(teach)_English in a middle school for about five years
2) Tom________ (collect)more than 300 Chinese stamps by the time he was seven
过去完成时表示某一动作或状态在过去某时之前已经开始,一直延续到这一过去时间,而且动作尚未结束,仍然有继续下去的可能
1) By the end of last year, my father ________( work) in the factory for twenty years
2) By six o’clock