题目内容
3.--Must we take out the trash now?-- .You can do it after class.( )
A. | Yes,you must | B. | No,you can't | C. | Yes,you may | D. | No,you needn't |
分析 --现在我们就要把垃圾拿出去吗?
--不,没必要,你们可以下课后再拿出去.
解答 答案:D. Must的否定有两种:mustn't;needn't.Mustn't 表示禁止做某事;needn't 没必要做某事.根据You can do it after class.可知没必要现在就把垃圾拿出去,可以下课以后拿.故选D.
点评 本题主要考察了情态动词的用法.在这里注意Must的两种否定:一种是Mustn't 表示禁止做某事;另一种是needn't 没必要做某事.做题时,应该注意区分它们之间的不同点.
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