Most question are formed by using determiners and pronouns.
Asking about the identity of an object
is a pronoun used a placeholder for any object. 무엇 is often contracted to or . For example, when inquiring what someone is eating:
?What do (you) eat?
In the same fashion, the pronouns , , can be used to ask questions.
?Who are (you)?
?Where are (you) going?
?From when shall (I) start?
Asking about methods
When one wishes to inquire about a method or manner the adverb is used.
?How can I go to Incheon?
Asking about reasons or motives
When one wishes to inquire about a reason the adverb is used.
?Why (do they) always come late (for) practice?
When one wishes to ask which category or kind an object may belong to, the determiners is used.
?What kind of music do you usually listen to?
When one wishes to distinguish an object from a group of selections is used.
?Which bus do I need to take to get to the airport?
When one inquires about a quantity the numeral is used. 몇 is placed before a counter.
?How many months did you spend?
Degree and extent
When one inquires about the degree to which something occurs, the adverb is used.
?How much would you like to drink?