WH Question Words

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

CASOS ESPECIALES
 
What kind of music do you like?         ¿Qué tipo de música te gusta?What is the weather like?                   ¿Qué tiempo hace? 
What's he like?                                  ¿Cómo es él?What does he like?                             ¿Qué le gusta a él? What does he look like?                    ¿Cómo es él? -de aspecto- 
Who's that man?                                ¿Quién es ese hombre ?Who's got my bag?                            ¿Quién tiene mi bolso?



 Objeto y sujeto

  Who y what pueden actuar como objeto o como sujeto en una oración interrogativa. 
Si actúan como sujeto no utilizan auxiliar (do,will,be...) para preguntar. 
Si actúan como objeto utilizan un verbo auxiliar.


Pronombre Interrogativo + Auxilar + Sujeto + verbo en forma no personal (inf., ger., part.)

Who did you ring? (¿a quién llamaste?) 
Who were you talking to? (¿con quién estabas hablando?)
Who has you phoned (¿a quién has llamado?)
 
Pronombre Interrogativo +verbo en la forma que corresponda (incluso formas compuestas) + objeto
Who rang you? (¿quién te llamó?) 
Who were talking to you? (¿quién estaba hablando contigo?)
Who has phoned you?(¿Quién te ha llamado?)

Question Words 

Question Words Object and Subject 

Question words exercises online 1