新概念英語第一冊語法總結:過去完成時
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過去完成時
用法:在過去的時間裡,兩個動作中,發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後面加逗號,如果放在主句後則不用加。
★ 變疑問句將助動詞移到句首
Had she finished her homework?
★ 變否定句在助動詞後面加not
She hadn't finished her homework.
★ 肯定回答及否定回答
Yes, she had. / No, she hadn't.
★ 特殊疑問句
What had she done?