题目内容
15.All the students are supposed ____ for today's tests.( )A. | to have prepared | B. | to be preparing | ||
C. | to prepare | D. | to have been prepared |
分析 所有的学生都应该为今天的开始做好的了准备.
解答 答案:A
题干中prepare for后接宾语,是主动关系;be supposed to应该,表示主观的看法和猜测;句意表达的是动作是已经完成,要用不定式的完成式.故选A.
点评 动词不定式是非谓语动词是一种,表示未发生的动作,用法较多.常用来作定语,主语,宾语,补语,状语等.
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