ask for的用法介绍：
请求,要求；寻找：
1、请求；要求；向…要…,需要：
He asked me politely for the book。他彬彬有礼地向我要那本书。
I asked for the hand of his daughter in marriage。我请求娶他的女儿为妻。
2、要求见(某人)；(通过询问来)寻找(某人),找(人)：
Did anyone ask for me?有人来找过我吗?
The guest asked for the manager。客人要见经理。
3、自己招惹(不愉快的事)：
He asked for all he got。他这是自作自受。