what?: asking for information about something. Example: What is your name?
asking for repetition or confirmation. Example: What? I can't hear you. You did what?
what...for?: asking for a reason, asking why. Example: What did you do that for?
when?: asking about time. Example: When did he leave?
where?: asking in or at what place or position. Example: Where do they live?
which?: asking about choice. Example: Which colour do you want?
who?: asking what or which person or people (subject). Example: Who opened the door?
whose?: asking about ownership. Example: Whose are these keys?Whose turn is it?
why?: asking for reason, asking what...for. Example: Why do you say that?
why don't?: making a suggestion. Example: Why don't I help you?where?: asking in or at what place or position. Example: Where do they live?
which?: asking about choice. Example: Which colour do you want?
who?: asking what or which person or people (subject). Example: Who opened the door?
whose?: asking about ownership. Example: Whose are these keys?Whose turn is it?
why?: asking for reason, asking what...for. Example: Why do you say that?
how?: asking about manner. Example: How does this work?
asking about condition or quality. Example: How was your exam?
how + adj/adv?: asking about extent or degree see examples below:
how far? distance. Example: How far is Pattaya from Bangkok?
how long?: length (time or space). Example: How long will it take?
how many?: quantity (countable). Example: How many cars are there?
how much?: quantity (uncountable). Example: How much money do you have?
how old?: age. Example: How old are you?
how come?: (informal) asking for reason, asking why. Example: How come I can't see her?
Learn more on Questions and answers at: http://www.englishclub.com/grammar/verbs-questions_types.htm
