/ ˈhæv tə; NAmE ; ˈhæf/ modal verb ( has to / ˈhæz tə; NAmE ; ˈhæs/ had to , had to / ˈhæd tə; NAmE ; ˈhæt/)
1.
(also have got to ) used to show that you must do sth :
Sorry, I've got to go.
Did she have to pay a fine?
You don't have to knock—just walk in.
I haven't got to leave till seven.
First, you have to think logically about your fears.
I have to admit , the idea of marriage scares me.
Do you have to go?
( especially BrE )
Have you got to go?
2.
(also have got to especially in BrE ) used to give advice or recommend sth :
You simply have to get a new job.
You've got to try this recipe—it's delicious.
3.
(also have got to especially in BrE ) used to say that sth must be true or must happen :
There has to be a reason for his strange behaviour.
This war has got to end soon.
4.
used to suggest that an annoying event happens in order to annoy you, or that sb does sth in order to annoy you :
Of course, it had to start raining as soon as we got to the beach.
Do you have to hum so loudly? (= it is annoying)
➡ note at modal , must