题目内容
7．---Mum，May I go out for swimming with friends？---No，you ______．It's dangerous．You must swim with parents．（ ）| A． | may not | B． | needn't | C． | couldn't | D． | mustn't |
分析 --妈妈，我可以和朋友一起出去游泳吗？
--不，你不可以．太危险了．你必须和父母一起游泳．
解答 答案：D．may not可能不；needn't不必；couldn't不能；mustn't不可以，禁止．根据It's dangerous，可知太危险，所以不可以和朋友一起出去游泳．mustn't不可以，禁止．故选D．
点评 本题考查情态动词．情态动词要熟记他们的含义和用法．多记忆课本上的重点句子，也会对做题有所帮助．
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