题目内容
18.Our classroom ______ after school every day.( )| A. | clean | B. | is cleaned | C. | cleaned | D. | to clean |
分析 每天放学后打扫我们的教室.
解答 答案:B.
结合every day表达的是经常性的动作故用一般现在时,主语our classroom是动词clean的承受者,构成被动关系,故用一般现在时的被动语态be+过去分词,主语三单,故is,故答案是B.
点评 被动语态表示主语是动作的承受者.被动语态是动词的一种特殊形式,一般来说,只有需要动作对象的及物动词才有被动语态.汉语往往用"被"、"受"、"给"等被动词来表示被动意义.被动语态由"助动词be+及物动词的过去分词"构成.被动语态的时态变化只改变be的形式,过去分词部分不变.疑问式和否定式的变化也如此.
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