Parking here is prohibited.
You must not/cannot park here.
It is a good idea to have health insurance when you go on holiday. - GET
You should get health insurance when you go on holiday.
At this school, it is compulsory for students to wear uniforms. -
At this school, students have to/must wear uniforms.
It's possible that she is ill, but I'm not sure. - BE
She might/may be ill, but I'm not sure.
It is forbidden for workers to use mobile phones in working hours. -
Workers can't/musn't use mobile phones in working hours.
It is your duty to be in the classroom on time. - TO
You have to be in the classroom on time.
Do you mind helping me open the window?
Could you help me open the window?
She had permission to go to the party.
She could/was able to go to the party.
It is not advisable to reuse the same mask. - ONCE
You shouldn't use the same mask more than once.
It isn't necessary that you come tomorrow.
You don't have to/don't need to/ needn't come tomorrow.
You are allowed to eat at the restaurant without wearing a tie. TO
You don’t have to wear a tie to eat at the restaurant.
What would you advise me to do?
What do you think I should do?/What should I do?
I'm not sure if he's coming.
He might be coming.
You needn't eat this if you don't like it.
You don't have to eat this if you don't like it.
It's possible that the weather will be sunny tomorrow.
The weather can/may/might be sunny tomorrow.
I advise you to study harder. -
You ought to study harder.
