go ape
发疯
A:What happened to your brother?
A:你哥哥出什么事啦?
B:It seems that he has gone ape over the girl.
B:他像是迷上那个女孩啦。
A:Your parents must be worrying about him.
A:你父母一定很担心他。
B:Yes, he's been like this for two weeks. We don't know what to do.
B:是的,他这个样子已经有两个星期了,我们不知道该怎么办。
A:Have you talked to him?
A:你们跟他谈过没有?
B:Yeah. But he just didn't listen.
B:谈过,但他就是不听。