小學(xué)英語(yǔ)語(yǔ)法總結(jié):過(guò)去完成時(shí)
用法:在過(guò)去的時(shí)間里,兩個(gè)動(dòng)作中,發(fā)生在前的哪個(gè)動(dòng)作要用過(guò)去完成時(shí)。
結(jié)構(gòu):had+過(guò)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(dǎo)的時(shí)間狀語(yǔ)從句放在句首要在句子后面加逗號(hào),如果放在主句后則不用加。
★ 變疑問(wèn)句將助動(dòng)詞移到句首
Had she finished her homework?
★ 變否定句在助動(dòng)詞后面加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(wèn)句
What had she done?
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