题目内容
10.Necessary action ________ so that students can be safe at schools.( )| A. | can be taken | B. | must be taken | C. | may be taken | D. | might be taken |
分析 为了学生在学校里安全,必须采取必要的行动.
解答 答案:B.
首先根据语境推测句意是"为了学生在学校里安全,必须采取必要的行动.",主语 Necessary action 是动作take 的承受者,确定用被动语态,根据句意用情态动词must表必须,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:B
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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