题目内容
11．Teenagers should to choose their own clothees（ ）| A． | allow | B． | allowing | C． | be allowed |
分析 应该允许青少年选择自己的服装．
解答 答案：C．
首先根据语境推测句意是"应该允许青少年选择自己的服装．"，主语Teenagers 是动作allow 的承受者，确定用被动语态，设空处前面有情态动词should，说明本题考查含有情态动词的被动语态，其构成是：主语+情态动词+be+动词的过去分词． 故答案为：C
点评 做此类题目，关键是明确句意，准确判断句子的主语是动作的执行者还是承受者，本题考查含有情态动词的被动语态，其构成是：主语+情态动词+be+动词的过去分词．
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