why, where, how, when

These are usually placed at the beginning of a question.

Examples:

• Why are you too early?
• Where is my ID?
• How are you doing?
• How much is that pencil?
• When does the train leave?

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 weight are you?
How old is your mother?

3. with much and many:
How much are these potatoes?
How many people are coming to the village?

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