to put a question (to); inquire (of): [no object]I asked but I never got an answer.[~ + object]I asked her but she didn't answer.[~ + object + clause]I asked him if they were going home.
to request information about: [~ + object]He was ashamed to ask the question.[~ + after + object]He asked after you.
to put into words so as to gain information, attention, etc.; utter:[~ + object]You have to ask the right questions.
to request (of): [~ + for + object]I asked for a little more time.[~ + object]I have to ask a favor of you.[~ + object + object]Could I ask you a favor?[~ + to + verb]I asked to leave early.[~ + object + to + verb]I asked her to leave early, but she wanted to stay.
[~ + object] (of a price)
to demand; expect: What price are they asking?
to set a price of: to ask $40 for the hat.
to invite:[~ + object + to + object]to ask guests to dinner.
to request to speak to (someone):[~ + for + object]Your sister called and asked for you.
Idiomsask for it or ask for trouble, to invite problems by continuing with risky or annoying behavior:He's really asking for it, coming in late.