These are:

why, where, how, when

They are usually placed at the beginning of a question.


  • Why are you so late?
  • Where is my passport?
  • How are you?
  • How much is that coat?
  • When does the train arrive?

Notice that how can be used in four different ways:

1. meaning 'in what way?':
How did you make this sauce?
How do you start the car?

2. with adjectives:
How tall are you?
How old is your house?

3. with much and many:
How much are these tomatoes?
How many people are coming to the party?

4. with other adverbs:
How quickly can you read this?
How often do you go to London?