2017公共英语二级(PETS2)语法基础知识(8)
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. 相关资料 |