题目内容
11．-__ I swim here？-No，you _____ Look at the sign"No swimming"．
| A． | Must； can't | B． | Can； don't | C． | Can； mustn't |
分析 --我可以在这儿游泳吗？
--不，您不可以．看这个标牌‘禁止游泳'．
解答 答案：C．对"must（必须）"开头的一般疑问句的否定回答用needn't或don't have to；如果是can开头的表示请求准许的一般疑问句，其否定回答一般用can't，如果语气更加强烈可用mustn't．由此可以排除AB．再根据Look at the sign"No swimming"，可知这里的意思是看这个标牌‘禁止游泳'，言外之意在这里不可以游泳，故选C．
点评 本题考查了情态动词的用法．解答时应该注意区分句意以及所给选项的意思．
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