过去完成时知识点总结

2022-07-23 02:12:14 文档大全网 [ 字体：小中大 ] [ 阅读： ]

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知识点,过去,完成,总结
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知识点总结

1.概念：表示过去的过去----|-------|-----|---->其构成是had +过去分词构成。那时以前那时现在 2.用法

a. 在told, said, knew, heard, thought等动词后的宾语从句中; She said (that) she had never been toParis. b. 状语从句为过去时，主句动作发生在前时;

When the police arrived, the thieves had run away.

c. 用hope, wish, expect, think, intend, mean, suppose等的过去完成时表示"原本…，未能…" We had hoped that you would come, but you didn''t.

3.过去完成时的时间状语before, by, until , when, after, once, as soon as。 He said that he had learned some English before.

By the time he was twelve, Edison had began to make a living by himself.

Tom was disappointed that most of the guests had left when he arrived at the party. 4.用一般过去时代替完成时

1)两个动作如按顺序发生，又不强调先后，或用then，and，but 等连词时，多用一般过去时。 When she saw the mouse，she screamed. My aunt gave me a hat and I lost it.

2)两个动作相继发生，可用一般过去时;如第一个动作需要若干时间完成，用过去完成时。 When I heard the news, I was very excited.

3)叙述历史事实，可不用过去完成时，而只用一般过去时。 Our teacher told us that ColumbusdiscoveredAmerica in 1492.

常见考法

1. 基本概念的考查；2. 和被动语态一起考查以增加难度；3. 将空设在从句中。

误区提醒

1.对“过去的过去”认识不清；2. 受被动语态等因素的影响；3.有从句时主从时间的先后辨别不清。【典型例题】

1.The students ___ busily when Miss Brown went to get a book she ___ in the office. A. had written, left B. were writing, has left C. had written, had left D. were writing, had left

解析："把书忘在办公室"发生在"去取书"这一过去的动作之前，因此用过去完成时。句中when表示的是时间的一点，表示这时"同学们正忙于……"，因此前一句应用过去进行时，正确答案D。

2. The policeman’s attention was suddenly caught by a small box which ____ placed under the Minister’s car.

A. has been B. was C. had been D. would be

解析：错选B。本题中的“过去 ”是“was suddenly caught”; “放小盒子”是在“过去”的前面，因此要用过去完成并且是被动语态，因此空是在定语从句中，有一定难度。正确答案C。

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