高中英语语法全解之情态动词+have+过去分词

　　情态动词+ have +从前分词

　　  
1) may(might) have + done sth, can (could) have + done sth　表现过去，揣测过去时光里可能产生的事件的高中英语语法全解。

　　Philip may (might) have been hurt seriously in the car accident.
Philip can (could) have been hurt seriously in the car accident.

2)　must have +done sth，对从前时间里可能发生的事件的揣摩，语气较强，存在"断定"，"谅必"的意思。
---Linda has gone to work, but her bicycle is still here.
---She must have gone by bus.

3) ought to have done sth, should have done sth
高中英语语法全解注意本应该做某事，而事实上并不做。否定句表示"不该做某事而做了"。
You ought to (should) have been more careful in this experiment.
He ought not to have thrown the old clothes away.（事实上已扔了。）
ought to 在语气上比should 要强。

4) needn't have done sth　 本没必要做某事
I dressed very warmly for the trip, but I needn't have done so. The weather was hot.

5) would like to have done sth　 本打算做某事的高中英语语法全解内容　
I would like to have read the article, but I was very busy then.