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英语
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have done、 would do,were doing和had done的不同
人气:426 ℃ 时间:2020-04-13 02:21:28
解答
have done 是现在完成时
were doing是过去进行时
had done是过去完成时
would do 是过去将来时 或者用在虚拟语气或者表示委婉礼貌
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