Questions (Simple Present)

In the present simple, the word order of a question depends on the verb. With the verb be we use inversion; with all other verbs we use do/does.

Questions with Be

Put am/is/are before the subject. Do not add do/does.

Am/Is/Are + subject + ...?

Are you happy? — not Do you are happy?
Is she a nurse?

Questions with Do/Does

With other verbs, use do (I/you/we/they) or does (he/she/it) + the base form of the verb.

Do/Does + subject + base verb ...?

Do you like tea?
Does he play tennis? — not Does he plays tennis?

Wh- Questions (What, Who, Where, Why)

The question word goes first, then the same order as above.

Question word + am/is/are or do/does + subject ...?

What is your name?
Who is that man?
Where are the keys?
Why do you like it?
Where does she live?

Quick Reference

Be: Am/Is/Are + subject
Are you ready?
Other verbs: Do/Does + subject + base verb
Do they work here?
Never use do/does together with be — not Do you are...