FORMULA
wh+ do/does+ subject+ base verb
WHAT
asking for information about something.
Example: What is your name?
WHEN
about time.
Example: When did he leave?
WHERE
asking in or at what place or position
Example: When did he leave?
WHICH
asking about choice
Example: Which colour do you want?
WHO
asking what or which person or people (subject)
Example: Who opened the door?
WHOM
asking what or which person or people (object)
Example: Whom did you see?
WHY
for reason, asking what...for
Example: Why do you say that?
HOW
asking about manner
Example: How does this work?
WHOSE
asking about ownership
Example: Whose are these keys?
Whose turn is it?
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?
WHY DON´T
making a suggestion
Example: Why don't I help you?
HOW COME (INFORMAL)
asking for reason, asking why
Example: How come I can't see her?
