题目内容
4.We ____ at the station so early.The train leaves at 9:20.I thought it would go at 8:00,and you didn't refuse to set off so early.( )
A. | needn't have arrived | B. | didn't have to arrive | ||
C. | shouldn't have arrived | D. | mustn't arrive |
分析 --我们本不必那么早到车站.火车9:20才出发.
--我原以为它8:00离开,并且你也没有拒绝早点出发.
解答 答案是A.本题考"查情态动词+have done"的结构.needn't have done是虚拟语气,表示"本不必做而实际上却做了";"didn't have to do"是真实语气,表示"过去没有必要做,事实上也没有做";shouldn't have done是虚拟语气,表示"本不应做但事实上做了";mustn't不能表示虚拟,只能表示"禁止,不允许".根据句意可知,我们到达车站太早,所以说话人认为"我们本不必这么早到达",由此判断答案选择A.
点评 在掌握虚拟语气的规则的基础上,判断题干属于什么类型的虚拟,然后根据语境,选用恰当的动词形式表达虚拟.

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