题目内容

11．--Must I go now？
--No，you     ．There's still a little time left．（　　）
A．can'tB．needn'tC．mustn'tD．must

分析 --我现在必须走吗？
--不，没必要．还剩下一点时间．

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：不能；B：没必要；C：不可以；D：必须；根据答语中的No．可知为否定回答，意思是"不，没必要"，以must开头的一般疑问句，肯定回答还用must，而否定回答一般借助于needn't或don't have to，表示"没必要"，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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