ask for的用法介紹：
請求,要求；尋找：
1、請求；要求；向…要…,需要：
He asked me politely for the book。他彬彬有禮地向我要那本書。
I asked for the hand of his daughter in marriage。我請求娶他的女兒為妻。
2、要求見(某人)；(通過詢問來)尋找(某人),找(人)：
Did anyone ask for me?有人來找過我嗎?
The guest asked for the manager。客人要見經理。
3、自己招惹(不愉快的事)：
He asked for all he got。他這是自作自受。