My sister met him at the Grand Theatre yesterday afternoon，so he your lecture.A. couldn't

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解决时间 2021-01-30 05:15

提问者网友：容嬷嬷拿针来
2021-01-29 11:10

My sister met him at the Grand Theatre yesterday afternoon，so he your lecture.
A. couldn't have attended
B. needn't have attended
C. mustn't have attended
D. shouldn't have attended

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五星知识达人网友：慢性怪人
2019-09-04 08:49

(答案→)A. couldn't have attendedB. needn't have attendedC. mustn't have attendedD. shouldn't have attended解析：“情态动词＋完成式”有各自的含义。must have done表示对过去事情的肯定推测，多用于肯定句中；needn't have done表示过去本不必做的事情；shouldn't have done表示过去做了不该做的事情；can't(couldn't)have done表示对过去的否定性推测，意为“不可能”。所提供的情境My sister met him at the Grand表示他不可能参加讲座。

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1楼网友：春色三分
2020-08-27 13:58

和我的回答一样，看来我也对了

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