题目内容
10.As it turned out to be a small house party,we ____ so formally.( )A. | should have dressed up | B. | can't have dressed up | ||
C. | must have dressed up | D. | needn't have dressed up |
分析 最终的结果表明那是一个小型的家庭聚会,我们本不必打扮得那么正式.
解答 答案:D 题干中turned out事实证明,可以知道动作发生在过去;情态动词加完成时态用来表示对过去事实的相反假设;should应该,can't不可能,must一定,needn't不必.故选D.
点评 虚拟语气是表示与事实相反的假设,构成方式有:对现在或将来,条件句中用一般过去时态,主语用情态动词加动词原形;对过去,条件句中用过去完成时态,主语用情态动词加完成时态.学习时,要牢记构成方式.
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