一个英语语法的问题------------务必高手进

问题描述:

一个英语语法的问题------------务必高手进
might 后接动词的完成式,除表示对过去的推测外,还有以下用法(不用may)
(1)表示过去某事可能发生而实际上却并没发生
A lot of men died who might have been saved.很多人本来可以获救的却死了.
It was really very dangerous.I might have killed myself.那真的是太危险了,我差点没命了.
(2)表示委婉的批评或责备
You might have made greater progress.你的进步本来可更大一些的.
You might at least have answered my letter.你至少可以回我一封信嘛.
我想知道这两点,总结成一点,是不是就是might + have done 可用于虚拟语气啊?
may + have done 不能用于虚拟语气.

是的,虚拟语气的结构是:should/would/might+have done/do