题目内容
11.Our classroom must __________ every afternoon.( )| A. | clean | B. | cleans | C. | cleaned | D. | be cleaned |
分析 我们的教室必须每天下午打扫.
解答 答案:D.
首先根据语境推测句意是"我们的教室必须每天下午打扫.",主语Our classroom 是动作 clean的承受者,确定用被动语态,设空处前面有情态动词must,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:D
点评 本题考查时态和语态.每个时态都有标志词,熟记这些标志词是做题的关键.在没有时间状语的情况下可以根据语境来对时态做出判断.判断语态的关键则是观察主语是谓语动词的执行者还是承受者.
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