It's fundamental that you pass the test tomorrow if you want to get your driver's license. (HAVE TO)
You have to pass the test tomorrow if you want to get your driver's license.
Students are prohibited to use their mobile phones during class. (MUST)
Students mustn't use their mobile phones during class.
It isn't necessary for her to do this assignment this week, she can do it next week. (NEEDN'T)
She needn't do this assignment this week, she can do it next week.
I don't recommend you to talk to him right now. He's very stressed. (SHOULD)
You shouldn't talk to him right now. He's very stressed.
At the cinema, you have the obligation to stay in silence, so everybody can pay attention to the film. (MUST)
At the cinema, you must stay in silence, so everybody can pay attention to the film.
You ________ smoke on planes.
mustn't
You ________ do the dishes. I will do it later.
don't need to / needn't / don't have to
