could have done "本来可以……"(表示过去没有实现的可能)。 might have done "本来可能……;本来应该或可以做某事"(实际没有发生;含有轻微的责备语气。 should/ought to have done "本来该做某事"(而实际未做) should not/ought not to have done "本来不该做"(实际...
过去分词-done 要掌握非谓语动词的用法,就是要掌握不同非谓语动词在各个句子成分的不同含义和用法。 一、非谓语动词的用法区别 从含义上大略可以区别:过去分词-done一...
解析:ought to have done 表示本来应该做某事而实际没做,should do 表示现在应该做某事,与题中 at yesterday’s party 表示的时间不一致。所以选D。 分析:高考对情态动词表示虚拟‘用法,表示与过去事实相反的情况。近几年高考,主要侧重should (not)have done 这一句式...
ought to have done 1、“ought to have + 动词的完成式”表示过去应做某事而实际未做,它的否定形式表示本不应该做某事却做了(用法和should相同)。 You ought to have helped him, but ...
should/ ought to have done sth 意为“本来应该干……,但未……” shouldn’t/ oughtn’t to + have done sth “本来不应该做……却做了” I wonder why she hasn’t written to us lately. We should have heard from her by now. I ought to have phoned Jack this...
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