题目内容
2.-_______ we clean the classroom at once?-No,you _______.You _______ clean it after school.( )
A. | Must; needn't; may | B. | Must; mustn't; can. | ||
C. | Shall; can't; must | D. | Need; mustn't; may |
分析 句意:--我们必须现在就打扫教室吗?
--不,你们不必.你们可以放学后再打扫.
解答 答案:A.根据No,you __.You __clean it after school.可知意思是我们不必现在就打扫教室.可以放学后再打扫,在这里通过答语可以推测出问句应该问的是我们现在一定要打扫教室吗,Must引导一般疑问句,表示一定,必须的意思,其否定回答为needn't,表示没有必要;can在这里表示许可的意思,may表示可能性.故选A.
点评 本题考查了情态动词的用法.解答时注意must引导的一般疑问句的肯否定回答.
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