过去完成时，什么时候用

Question

如题所述

Answer 1

过去完成时表示在某一时间或动作之前已经发生或完成了的动作。它表示动作发的时间是“过去的过去”。表示过去某一时刻可用by、before等构成的短语，也可用when、before等引导的从句，或者通过上下文表示。
列举
1⃣By the time I went outside,the bus had already left. 我到外面去的时候，车已经开走了。
2⃣When I got to school,I realized I had left my backpack at home. 当我到达学校的时候，我意识倒我把背包落在家里了

例句
1⃣Mr. Smith died yesterday. He had been a good friend of mine.史密斯先生昨天去世了。他是我的好朋友。
2⃣I didn’t know a thing about the verbs, for I had not studied my lesson.我对动词一无所知,因为我没有好好学习功课。
3⃣He said that he had known her well.他说,他很了解她。
4⃣I thought I had sent the letter a week before我以为前一周我寄了那封信的。
5⃣After he arrived in England, Marx worked hard to improve his English.马克思到英国后,他努力提高他的英语水平。
6⃣When I woke up, it had already stopped raining.当我醒来时,雨已经停了。
7⃣We had hoped to be able to come and see you我们希望能被允许来看你。
8⃣It was the third time that he had been out of work that year这是他那一年第三次失业。
9⃣I had finished reading the novel by nine o'clock last night到昨晚9点钟，我已经读完这本小说。