I can’t meet you tomorrow. I have to g oto school.
I had to go to school.
I might have to go to dentist.
Have you ever had to go to hospital.
Why did you have to go to hospital?
You don’t have to study French.
don’t have to it’s not necessary to do
Look, this is digest, you don’t have to read it all.
Today is sunday, you don’t have to go to work.
Didn’t have to (To say that the action was unnecessary and this was known at the time of speaking.)
Did you get up ealy this morning. No today is sunday. I didn’t have to get up early.
