[题目]-- I watch TV now?--Sure, but you finish your homework first.A. may; could B. can; must C. can; mustn’t D. may; can’t 题目和参考答案——青夏教育精英家教网—

题目内容

【题目】--_______ I watch TV now?

--Sure, but you ____________ finish your homework first.

A. may; could B. can; must C. can; mustn’t D. may; can’t

【答案】B

【解析】

句意：——-我现在能看电视吗？ ——当然，但你必须先完成作业。can能，可能；may可能；must一定，必须；could可能，表示更委婉的说法，mustn't不可以；can't不可能；can和may在表示可能性上，can的语气比may要强烈，may要显得婉转。而且can多用于口语，在正式用于中多用may。can表示可能，多用于否定句与疑问句。根据I watch TV now，可知这里表示一种请求，这里用can表示能；再根据but you…finish your homework first，可知这里必须先完成作业，语气较为强烈，所以在这里用must表示一定要做的事。故选B。

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