题目内容
18.-Must I finish the exercise in class?-No,you .You may leave it as homework.( )
| A. | can't | B. | needn't | C. | shouldn't | D. | mustn't |
分析 --我必须在课堂上完成练习吗?
--不,你不必.你可以留着作为家庭作业.
解答 答案:B.can't不可能;needn't不必;shouldn't不应该;mustn't禁止.根据You may leave it as homework,可知你可以留着作为家庭作业,在这里是表示作出否定回答.由must引导的一般疑问句表示否定回答时需要用needn't或don't have to来回答.故选B.
点评 情态动词的考查.回答以must引导的一般疑问句,肯定回答用Yes,Sb must."是的,…必须";否定回答用No,Sb needn't"不,…不必".
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