Untie me

(expressing doubts; Use alone, ask questions):

What do you want? What do you want?

What did he say? What did he say?

(used to ask people or things before nouns):

What news? What news?

What goods do we export? What goods do we export?

What kind of a man is he? Who is he?

(expressing uncertainty):

Something prevented him from coming. For some reason, he couldn't come.

Something seems to have happened. There seems to be something wrong.

(Used before "also" or "all" to indicate that there are no exceptions within the stated scope):

He didn't say anything. He didn't say anything.

He is not afraid of anything. He is not afraid of anything.

Take care of two "what" before and after, which means that the former determines the latter;

What key opens what lock?

Say what you have. Speak your mind.

(expressing surprise or dissatisfaction):

What, are you serious? What, are you serious?

What! No money? What! No money?

(expressing blame):

Say it! What are you pretending to be dumb? Talk to me! Don't play dumb.

(expressing disagreement with what the other party just said):

What don't understand! Just play dumb. What do you mean?-i don't understand. You're just pretending.

(means too numerous to mention):

She bought all kinds of pork, potatoes and vegetables. She bought pork, potatoes, vegetables and everything.