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  • 新概念英语第一册语法总结(六)

    作者:ihome 时间: 2009-11-24 22:44 来源:未知 点击:
    6. 过去完成时:
      用法:在过去的时间里,两个动作中,发生在前的哪个动作要用过去完成时。

      结构:had+过去分词

      After she had finished her homework, she went shopping.

      They had sold the car before I asked the price.

      The train had left before I arrived at the station.

      After/before引导的时间状语从句放在句首要在句子后面加逗号,如果放在主句后则不用加。

      5 变疑问句将助动词移到句首

      Had she finished her homework?

      6 变否定句在助动词后面加not

      She hadn’t finished her homework.

      7 肯定回答及否定回答

      Yes, she had. No, she hadn’t.

      8 特殊疑问句:

      What had she done?
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