If you ask someone something, you say something to them in the form of a question because you want to know the answer.

If you ask someone to do something, you tell them that you want them to do it.

If you ask to do something, you tell someone that you want to do it.

If you ask for something, you say that you would like it.

If you ask for someone, you say that you would like to speak to them.

If you ask someone's permission, opinion, or forgiveness, you try to obtain it by putting a request to them.

If you ask someone to an event or place, you invite them to go there.

If someone is asking a particular price for something, they are selling it for that price.

You reply 'don't ask me' when you do not know the answer to a question, usually when you are annoyed or surprised that you have been asked.

If something is yours for the asking, you could get it very easily if you wanted to.

If you say 'I ask you', you are emphasizing how much you disapprove of someone or something.

You can say 'may I ask' as a formal way of asking a question, which shows you are annoyed or suspicious about something.

You can say 'if you ask me' to emphasize that you are stating your personal opinion.

If you say that someone is asking for trouble or is asking for it, you mean that they are behaving in a way that makes it very likely that they will get into trouble.