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2021年中考英语复习之过去完成时句型结构


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    过去完成时
    过去完成时用来表达某事发生在另一个时间点之前。它经常被用来提供上下文或解释。
    这种时态常与下列时间短语连用:
    ... before
    already
    once, twice, three times,等等
    ... by the time
    基本结构
    肯定的
    Subject + had + past participle + object(s) + time Expression
    主语+ had +过去分词+宾语(s) +时间
    She had already eaten by the time the children came home.
    否定的
    Subject + had not (hadn't) + past participle + object(s) + time Expression
    主语+ had not (hadn't) +过去分词+宾语(s) +时间
    They hadn't finished their homework before the teacher asked them to hand it in.
    问答
    (Question Word) + had + subject + past participle + object(s) + time Expression
    (疑问词)+ had +主语+过去分词+宾语(s) +时间
    Where had you gone before the class began?
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