ask用作及物动词，其后可接名词、代词、带或不带疑问词的动词不定式或that/wh-从句作宾语，that从句中常使用虚拟式。ask an advice征求意见；ask an excuse请求原谅；ask an name问姓名；ask a price要价。
ask的用法和固定搭配
1. 可以接双宾语。如：
Ask him his name. 问问他的名字。
She asked me what I wanted. 她问我想要什么。
有时双宾语交换位置，借助介词 of。如：
他来请我帮忙。
正：He came to ask me a favour.
正：He came to ask a favour of me.
他问了我一个问题。
正：He asked me a question.
正：He asked a question of me.
2. 与介词的常见搭配：
(1) 与介词 for 连用，有“要求得到”的意思。如：
She is always asking for money. 她老是要钱。
He asked 100 yuan for a box. 他要100元一箱。
有时单独用 ask 也可表示 ask for 的意思。如：
He asked (for) the teacher’s advice. 他向老师征求意见。
=He asked the teacher for his advice. 他向老师征求意见。
(2) 与 about 连用，表示询问或打听关于某事的情况。如：
Ask (him) about the ring — he may have found it. 问问(他)你丢的戒指——也许他捡到了。
(3) 与 after 连用，表问候或问好。如：
He always asks after you in his letters. 他每次来信都向你问候。
比较(www.yygrammar.com)：
He asked her something. 他问她一个问题(或一件事)。
He asked her for something. 他问她要某东西。
He asked her about something. 他问她关于某事的问题。
3. 后接不定式或不定式的复合结构，表示要求做某事或要求某人做某事。如：
He asked to stay with us. 他要求和我们一起留下。
She asked me to post some letters. 她叫我寄几封信。
1、ask a price：要价
2、ask a question：提问
