give a hand 帮助
The man can give a hand.
这个人帮得上忙。
Sorry, I can't give a hand for the thing your son goes to school.
对不起，你儿子上学那事我帮不上忙。

pathetic 令人同情的，可怜的; 又笨又可怜的
He was a bit pathetic and so I asked him in.
他看上去有点可怜，于是我请他进门。
Yeah? You don't think it's just pathetic?
啊?你不认为这很可悲么?