21.7模样形状动词+ have +过往分词-模样形状动词
21.7模样形状动词+ have +过往分词
1） may（might） have + done sth, can（could） have + done
sth默示过往，料到过往时候里年夜概发作的事变。例如：
Philip may（might） have been hurt seriously
in the car accident.菲力浦年夜概在车祸中受了轻伤。
Philip can（could） have been hurt seriously
in the car accident.
2） must have +done sth，对过往时候里年夜概发作的事变的料到，语气较强，具有"一定"，"谅必"的意思。例如：
---Linda has gone to work, but her bicycle is still here.琳达已经往下班了，但她的单车还在这儿。
---She must have gone by bus.一定乘巴士往的。
3） ought to have done sth, should
have done sth默示本应该做某事，而毕竟上并没有做。否定句默示"不该做某事而做了"。例如：
You ought to（should） have been more careful
in this experiment.你那时在做实验时应该更细致点。
He ought not to have thrown the old clothes
away.他不该把旧衣服扔了。（毕竟上已扔了。）
ought to在语气上比should要强。
4） needn't have done sth默示本没需要做某事，但做了。例如：
I dressed very
warmly for the trip, but I needn't have done so. The weather was hot.
旅游时，我衣服穿得较多，实在没有需要。那时天很热。
5） would like to have done sth默示本打活动看成某事，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，但太忙了不断没读。

关键字：模样形状动词 have done 模样形状动词 模样形状动词的用法 模样形状动词默示预测 什么是模样形状动词