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一道反意疑问句的选择题Heknowssomuchaboutthestory.Hemusthavereadthebook,?Ahasn'theBdidn'the这里没有时间状语,应该怎么判断呢?请说一下理由,非常感谢啦很急~~~~~在线等这里是must

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一道反意疑问句的选择题
He knows so much about the story.He must have read the book,_____?
A hasn't he B didn't he
这里没有时间状语,应该怎么判断呢?请说一下理由,非常感谢啦
很急~~~~~在线等
这里是must have done 结构,是对过去猜测。
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答案和解析
选A.
这类表对过去猜测的反义疑问句,有两种情况
1.有过去时间 用didn't
2.没有时间,用hasn't/haven't
He must have met her yesterday,didn't he?
You must have seen the film,haven't you?