It's not necessary to take water bottles to school. Students...
Students don't have to take water bottles to school.
It is good for us to practise more exercise. We...
We should practise more exercise.
It's not good for her to eat so much fast food. She...
She shouldn't eat so much fast food.
What's does this sign mean?
You mustn't swim here.
It would be good for him to see a doctor. He...
He should see a doctor.
It's good for people to have a balanced diet. People...
People should have a balanced diet.
What does this sign mean?
You mustn't use your cellphone.
What does this sign mean?
You mustn't park here.
It's not recommended that people spend too much time online. People...
People shouldn't spend too much time online.
It's essential that you brush your teeth before going to bed. You...
You must/have to brush your teeth before going to bed.
It is essential that we pay attention to the HW correction. We...
We have to/must to pay attention to the HW correction.
It's forbidden to play loud music after 10 p.m. You...
You mustn't play loud music after 10 p.m.
It's not necessary that Mike waits for me. Mike...
Mike doesn't have to wait for me.
Louise really wants to have a dog. What's your advice?
She should... (promise to take care of it).
What does this sign mean?
You must/have to stop.
It is necessary to wear uniform at this school. We...
We must/have to wear uniform at this school.
Ryan has had lots of bad grades. What's your advice?
He should... (study harder).
What does this sign mean?
You must turn left.
It's a good idea to take an umbrella with you. You...
You should take an umbrella with you.
It's not essential that my father helps me with the HW. My father...
My father doesn't have to help me with the HW.
People under 18 are not allowed to get a driver's license. People under 18...
People under 18 mustn't get a driver's license.