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牛津实用英语语法:220 条件完成时

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  A 这种时态由would/should+完成式构成:

  肯定式: I would/should have worked

  you would have worked等

  否定式: I would not/should not have worked等

  疑问式: would/should I have worked?等

  否定疑问式: should I not have/shouldnt I have worked?

  would you not have/wouldnt you have worked?

  B 这种形式用于:

  (a)条件句中。

  (b)would和should的特殊用法中。

  (c)过去时中,相当于将来完成时:

  I hope he will have finished before we get back.

  我希望在我们回来之前他已经做完。

  I hoped he would have finished before we got back.

  我曾经希望在我们回来之前他已经做完。

  

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