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六.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。 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. 七.现在完成进行时 1.其构成形式如下: I / we / they have been + 动词的现在分词 He / she / it has been + 动词的现在分词 功用如下: 2. 表示一个在过去开始而在最近刚刚结束的行动,如: Ann is very tired. She has been working hard. Why are you clothes so dirty? What have you been doing? 3.表示一个从过去开始但仍在进行的行动,如: It has been raining for two hours. (现在还在下) Jack hasn’t been feeling very well recently. 4. 表示一个从过去开始延续到现在,可以包括现在在内的一个阶段内,重复发生的行动,如: She has been playing tennis since she was eight. 5. 现在完成时强调动作行为的结果、影响,而现在完成进行时只强调动作行为本身,如: Tom’s hands are very dirty. He has been repairing the car. The car is going again now. Tom has repaired it. 注意: 现在完成时有否定结构、而现在完成进行时没有否定结构。 现在完成时态可表示做完的时期以及已有的经验、但现在完成进行时不可以 现在完成进行时的否定结构 现在完成进行时有时也可用否定结构。 如: Since that unfortunate accident last week, I haven’t been sleeping at all well. 自从上周发生了那次不幸事故之后,我一直睡得很不好. He hasn’t been working for me and I haven’t has that much contact with him. 他并没有给我工作过,我和他没有过那许多接触。 6.否定句构成: 主语+has/have+not+been+现在分词 7.一般疑问句构成: Have/has+主语+been+现在分词+其他 第一 二单元是直接引语与间接引语, 第三单元是现在进行时表将来 第四五单元是定语从句。其中第四单元是关系代词,第五单元是关系副词,及介词加关系代词 |
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发布于:2016-01-03 14:47
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