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1、 2022年中考英语含助动词句型精讲8构造主词would have过去分词说明此句型意为“原本会但却未如此“。用以表示“与过去事实相反“的。He would have attended meeting, but upon learning that he had no time, he dropped the idea.他原本要出席会议的，但知道没有时间，就消除了这个念头。I would have told you the truth, but you didn”t give me a chance.我原来要告知你事情的真相，但是你不给我时机。I would have done it, but
2、 I had no time. 我原来要办这事的，可是没时间。She would have married him, but when she learned that he was a rascal, she parted with him.她原来会嫁给他的，但知道他是个流氓后，她就离开他了。. could have V-ed .构造主词could have过去分词说明此句型意为“原本能够但却未如此“。He could have bought the car, but soon his company went bankrupt.他原来能买那辆车的，但没多久他的公司就倒闭了。He could
3、 have finished it on schedule, but somehow he fell behind.他原本能按预定进度做完这件事的，但不知怎地却落后了。I could have done it if I had wanted to. 假如我那时想做，我能做得到的。. should have V-ed .构造主词shouldought to have过去分词说明此句型意为“原本应当但却未如此“。此表示没有实现之过去的行为、状态，含有讲话者的责难或圆满之意。You should have spoken up in the meeting. 会谈时你实在应当发言（然而你却没有）。He
4、 should at least have come to say good-by. 他至少也该来道个别（然而却没来）。He ought to have kept his promise. 他原本应当遵守自己的诺言。You should have been more careful in money matters. 在钱方面，你本当更当心点的。He ought to have arrived there by now. 他现在应当已经到那里了。The drama drew a capacity audience; you should have gone to see it.这出戏吸引了满场
5、观众；你真该去看的。I should have known better构造主词should have known better（than to原形动词）说明此句型意为“原来不应当那样笨（而）“，是指已经做过之事，而 know better（不致那样笨）是指未做之事。I should have known better. 我原来不应当那样笨。You should have known better than to talk like that. 你本应更懂事而不致说这样的话。You should have known better than to go mountain climbing alone.你原来不该笨得单独去爬山。I know better than to go swimming after dinner. 我不致笨得吃过饭就去游泳。
