题目内容
2．The twin sisters clean the house every day．（改为被动语态）The houseiscleanedby the twin sisters every day．
分析 句意：双胞胎姐妹每天打扫房间．房间每天被双胞胎姐妹打扫．
解答 本题考查一般现在时的被动语态．be+动词的过去分词构成被动语态；本句的主语是the house，所以用被动语态，根据题干中every day可知是一般现在时．故答案为：is cleaned．
点评 本题考查一般现在时的被动语态．解答本题的关键是掌握被动语态的构成be+动词的过去分词．
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