you have to do it
Chiaramente, non devi farlo se non ti va.
Of course, you don't have to do it if you don't want to.
— Love Actually - L'amore davvero (2003)
Do you have to do it right now?
You mustn't do it.
Non devi farlo ogni giorno, vero?
You don't have to do it every day, do you?
Non devi farlo senza permesso.
You mustn't do it without permission.