用作定语
▲～+n.
Insane people are sometimes dangerous.有时精神病人非常危险。
He made an insane decision.他做了一个愚蠢的决定。
用作表语
▲S+be+～
He went insane.他疯了。
The idea is totally insane.这主意蠢透了。
▲S+be+～+prep.-phrase
The old lady went insane from her son's death.这位老太太因为儿子死了而精神错乱。
▲S+be+～+to-v
You must be insane to go out in this weather.你在这种天气还出去,准是疯了。
You'd be insane to let him have the final say.你要让他最后说了算,那你可蠢透了。
用作宾语补足语
▲S+V+O+～
His new house made her insane with jealousy.他的新房使她妒忌得发疯。
其他
▲as n.
There is a hospital for the insane at the corner of the street.这条街的拐角处有家精神病医院。
