|
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。 | 
