Does he take photographs?
Yes, he does.
Is he taking a photograph?
No, he isn't.
What does he do?
He takes photographs. (He is a photographer.)
What is he doing?
He is having (taking) a bath.
Does she drive a bus?
Yes, he does.
Is she driving a bus?
No, she isn't.
What does she do?
She drives a bus. (She is a bus driver.)
What is she doing?
She is playing the piano.
Does he clean windows?
Yes, he does.
Is he cleaning a window?
Yes, he is.
What does he do?
He cleans windows. (He is a window cleaner.)
What is he doing?
He is cleaning a window.
Do they teach?
Yes, they do.
Are they teaching?
No, they aren't.
What do they do?
They teach. (They are teachers.)
What are they doing?
They are watching TV.
