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语法讲解 | 什么情况下使用过去完成时?

分类: 英语语法 

英语的过去完成时表示表示过去的过去。这个是大家在中学时期就知道的,今天,小编为同学们带来了相当丰富的与英语过去完成时的相关语法,一起来看看吧!

 

概念: 表示过去的过去,其构成是had +过去分词。

一、过去完成时常用的连词有: before, by, until, when, after, once, as soon as等。例如:

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.

二、在什么情况下使用过去完成时?

1. 在told, said, knew, heard, thought等动词引导的宾语从句中,一般用过去完成时。例如:

She said (that) she had never been to Paris.

2. 状语从句

在过去不同时间发生的两个动作中,发生在先,用过去完成时;发生在后,用一般过去时。例如:

When the police arrived, the thieves had run away.

3. 表示意向的动词,如hope, wish, expect, think, intend, mean, suppose等,用过去完成时表示“原本……,未能……”。例如:

We had hoped that you would come, but you didn't.

 

典型例题:

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

答案D。 “把书忘在办公室”发生在“去取书”这一过去的动作之前,因此“忘了书”这一动作发生在过去的过去,用过去完成时。句中when代表时间的一点,表示在“同学们正忙于……”这一背景下, when所引导的动作正在发生。因此前一句应用过去进行时。

 

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