Wh words

What

When

Asking for information about something

Asking about time

Wh word Function Example

What is your name?

When did he leave?

Where

Which

Asking for place or position

Asking about a choice

Wh word Function Example

Where is the park?

Which color do you want?

Who

Why

asking what or which person or people (subject)

asking for reason, asking what...for

Wh word Function Example

Who are you talking to?

Why do you say that?

How asking about manner

Wh word Function Example

How does this work?

how + adj/adv

How far

How long

Distance

length (time or space)

See more examples of HOW

-How far is Pereira from Barranquilla?

-How long is it going to take?

how + adj/adv

How many

How much

Quantity (countable)

Quantity (countable)

See more examples of HOW

-How many apples would you like?

-How much money do you have?

how + adj/adv

How old

how come(informal)

Modified from http://www.englishclub.com/vocabulary/wh-question-words.htm

Age

asking for reason, asking why

See more examples of HOW

-How old are you?

-How come I can't see her?