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英語語法考點梳理:過去完成時

來源:網(wǎng)絡資源 文章作者:奧數(shù)網(wǎng)整理 2019-03-23 09:35:34

  過去完成時:用法:在過去的時間里,兩個動作中,發(fā)生在前的哪個動作要用過去完成時。

  結構:had+過去分詞

  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引導的時間狀語從句放在句首要在句子后面加逗號,如果放在主句后則不用加。

  1.變疑問句將助動詞移到句首

  Had she finished her homework?

  2.變否定句在助動詞后面加not

  She hadn’t finished her homework.

  3.肯定回答及否定回答

  Yes, she had. No, she hadn’t.

  4.特殊疑問句:

  What had she done?

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