I think he must be writing his essay at home now, ? A．is he B．isn’t he C．do I D．mustn’t he 题目和参考答案——青夏教育精英家教网—

题目内容

I think he must be writing his essay at home now, ______?

A．is he B．isn’t he C．do I D．mustn’t he

【答案】

【解析】

试题分析：考查反义疑问句。本题中有一个省略部分I think,当句子有情态动词表示推测的时候，如果有现在时的时间状语，就对现在时进行反问。本题中有Now，主句有be动词，故就对系动词Be进行反问，故B正确。句意：我认为现在他一定在家写论文，不是吗？

考点：考查反义疑问句

点评：反义疑问句，要注意对主句的语义的正确理解，还要注意主句是否是表示推测还虚拟，是否有时间状语的影响。

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