Might as well 意思是If you say that you might / may (just) as well do sth., you mean that you will do it although you do not have a strong desire to do it and may even feel slightly reluctant about it. 下列造句不正确的是:
A.
Anyway, you’re here; you might as well stay.
B.
The post office is really busy. We’ll have to queue for ages to get served. We might as well go home.