题目内容

9．0．They don't allow students to use mobile phones at school．（改写句子，句意不变）
Studentsaren'tallowedto use mobile phones at school．

分析 他们不允许学生在学校使用手机．
学生不允许在学校使用手机．

解答 答案：aren't allowed 第一句"They don't allow students…"为主动语态，时态为一般现在时，句式为否定句，词组为allow sb．to do sth．；第二句"Students..to use"students为动作的承受者，用作主语，这里要采用被动语态，结合第一句的时态，这里要用一般现在时的被动语态的否定式am，is，are+not+过去分词，主语students为复数，be动词要用are，故填：aren't allowed．

点评 考查同义词，理解句子的意思，比较这两个句子，可以知道这里考查被动语态，注意被动语态的构成．

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