托福语法辅导：情态动词+have+过去分词.docx

Word文档下载后（可任意编辑） 托福语法：情态动词+have+过去分词 托福语法：2017托福语法：情态动词+have+过去分词 1) may(might) have + done sth， can (could) have + done sth　表示过去，推测过去时间里可能发生的事情例如： Philip may (might) have been hurt seriously in the car accident. 菲力浦可能在车祸中受了重伤 Philip can (could) have been hurt seriously in the car accident. 2) must have +done sth，对过去时间里可能发生的事情的推测，语气较强，具有"肯定"，"谅必"的意思例如： ——Linda has gone to work， but her bicycle is still here. 琳达已经去上班了，但她的单车还在这儿 ——She must have gone by bus.肯定乘巴士去的 3) ought to have done sth， should have done sth表示本应该做某事，而事实上并没有做。

否定句表示"不该做某事而做了".例如： You ought to (should) have been more careful in this experiment. 你当时在做试验时应该更仔细点 He ought not to have thrown the old clothes away.他不该把旧衣服扔了事实上已扔了) ought to 在语气上比should 要强 4) neednt have done sth表示本没必要做某事，但做了例如： I dressed very warmly for the trip， but I neednt have done so. The weather was hot. 旅行时，我衣服穿得较多，其实没有必要那时天很热 5) would like to have done sth表示本打算做某事，但没做例如： I would like to have read the article， but I was very busy then. 我想读这篇文章，但太忙了一直没读 接下来的语法内容依然进行，欢迎广大学员关注托福考试，高效提升托福语法能力。

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