should have done
should have + 动词的完成式表示本应该做而实际上没有做,它的否定形式表示某种行为本不该发生但却发生了。有责备的意味。
You should have started earlier, but you didnt.
你本应该早点儿出发,但是你没有。
You should have washed the wound.
你应该已经洗好了伤口。
She shouldnt have taken away my dictionary, for I wanted to use it.
她本不应该拿走我的词典,因为我要用它。
You shouldnt have been so rude to him.
你本不应该对他那么粗鲁。
注:should have + 完成式虽然可以表猜测,但因为会造成歧义,应少用。
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 you didnt.
你本应该帮助他但你没有。
You ought to have studied harder.
你本应该更努力学习的。
He ought not to have stopped his work halfway.
他本不应该做这项工作时半途而废。
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