Скакими лицами надо использовать have to ,has to ,dont have to ahd does have to .

I,you,we,they к ним надо использовать have to и don't have to.
He,she,it к ним надо использовать had to и doesn't have to

Have to - we, you, they, I
Has to - he, she, it
Don't - me, you, they, I
Doesn't- he, she, it