I have to do something = It is necessary to do it, I am obliged to do it You can’t turn right here. You have to turn left. = sola dönmelisin I have to wear glasses for reading. Karen doesn’t have to work Saturdays. Must have to ile benzerdir. It’s later than I thought. I must go. Kendi kararlarımızı verirken must kullanırız. I haven’t spoken to sue for ages. I must phone her. = Onu aramalıyım Mark is a really nice person. You must meet him. Dışarıdan kaynaklanan zorunluklarda have to kullanılır. I have to work from 8:30 to 5:30 every day. = a fact, not an opinion Jane has to travel a lot for her work. Geçmiş zamanda must kullanılmaz. We had to leave early. Must genellikle yazılı kural ve yönergelerde kullanılır. Application fort he job must be received by 18 May. You must write your answers in ink. Mustn’t ve don’t have to tamamen farklıdır. You mustn’t do something = it is necessary that you do not do it You must keep it a secret. You mustn’t tell anyone. = Kimseye söylememelisin You don’t have to do something = you don’t need to do it (but you can if you want) I don’t have to be at the meeting, but I think I’ll go anyway. = Meetinge gitmem gerekmiyor. Have to yerine have got to da kullanılabilir. I have got to work tomorrow.