题目内容
13.--Mum,may I watch TV now?--No,you finish your homework first.( )| A. | mustn't | B. | must | C. | need | D. | can't |
分析 --妈妈,我现在可以看电视吗?
--不,你必须现完成作业.
解答 答案:B.
结合选项可知本题考查情态动词,首先明确选项中每个单词的意思:A:不可以(表禁止);B:必须;C:需要;D:不能; 结合问句和答语中的No,推测答语的句意是"不,你必须现完成作业."所以must 符合句意,故选B.
点评 本题考查了情态动词的用法.解答时首先根据题干明确句意,理解所给选项中每个情态动词的意思并熟练掌握它们的用法,便可作出正确选择.
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