2014年PETS二级考试:语法讲解(6)

2014-04-12 21:12:00来源:网络

  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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