高考英语语法摘抄

2020-08-21摘抄

高考英语语法摘抄

  高考英语语法精要讲解二十四:过去完成时

  1、过去发生的两个动作,先发生的用过去完成时

  With their help I realized that I had been wrong.

  2、过去某时以前发生的动作或情况

  He hasn’t finished yet.

  He didn’t finish yesterday evening.

  He hadn’t finished by yesterday evening.

  3、常用过去完成时的.情况

  ①No sooner…than…. Hardly…when…

  No sooner had he begun his speech than he was interrupted

  ②expect, hope, think, want, suppose等动词的过去完成时(或一般时)表示想做而未做的事

  I had planned to send him a telegram, but I didn’t manage it.

  4、使用过去完成时的必要性和非必要性

  ①句意十分清楚时,可用一般时

  After I finished, I went home.

  ②常用一般过去时表示依次发生的动作

  I got out of the taxi, paid the fare(车费) and managed it.

  ③有时必须明确,特别是含when时

  When I arrived, Ann left.

  (同时见到)(见到Ann)

  When I arrived, Ann had left.

  (先后发生)(没见到)

  5、常用过去完成时的时间主状语

  by the end of +过去时间 ; by + 过去时间

  by the time + 过去时间;过去时间 + before

  比较:

  By the time he was 11, he had learned 3000 words .

  By the time he is 11, he will have learned 3000 words.

  By the time last week, I had learned 3000 words.

  By the time next week, I will have learned 3000 words

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