Students mustn't smoke because smoking is harmful to their health．Studentsaren'tallowed to smoke because smoking is harmful to their health．题目和参考答案——青夏教育精英家教网——

题目内容

14．Students mustn't smoke because smoking is harmful to their health．（保持句意基本不变）
Studentsaren'tallowed to smoke because smoking is harmful to their health．

分析学生们禁止抽烟，因为吸烟对他们的健康有害
学生们不被允许抽烟，因为吸烟对他们的健康有害．

解答答案：aren't allowed．原句mustn't表示禁止，也就是不允许，故可以换成be not allowed to do sth．原句是一般现在时，时态不变，主语是students是复数，故答案是aren't allowed．

点评平时多积累词汇和短语是作答该题的前提，其次要结合句意，根据语法要求，正确作答．

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