2017公共英语二级(PETS2)语法基础知识(8)

全国等级考试资料网 2019-01-17 02:44:39 72

过去完成时

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。

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

b. 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。

When the police arrived, the thieves had run away.

c. 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…"

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.

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