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高中英语语法分类归纳、练习与分析(精华版)

时间:2009-11-02 11:26 来源:互联网 作者:转载 点击:

  高考英语语法分类归纳、练习与分析(精华版)  一.Tenses and voices  A. 现在完成时: 1)表示过去某时发生的行为对主语目前产生的

  高考英语语法分类归纳、练习与分析(精华版)

  一.Tenses and voices

  A. 现在完成时: 1)表示过去某时发生的行为对主语目前产生的影响。即用过去发生的某个行为来说明现在的某种情况。往往含有已经, 已经了的意思。

  Eg.Don't think any more about it. I have decided not to help you.

  I have experienced that before, so I know how to deal with it.

  2) 到目前为止已发生的。与so far, up till now, in the past/ last .days/ years, today, this month/ year 等 包括现在在内的时间状语连用。

  My brother is an actor. He has appeared in several films so far.

  Great changes have taken place in this area in the recent years.

  3)表示过去开始的动作或状态延续到现在。与for/ since 连用。

  He has worked in the south for ten years/ since ten years ago.

  Compare(1):完成进行时表示过去开始的动作一直在进行,直至现在。

  He has been working on this project since last month.

  (2) 过去时态:指发生在过去某段时间内的事。

  He once worked in the south for ten years (现在不在南方)

  (3) 过去完成时态:指发生在过去某个时间以前的动作或状态。常与by/ by the end of..(到了的时候连用。例如:

  1)By the time we got to the theatre, they had sold all the tickets.

  2)How many words had you leaned by the end of last year?

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