I suggest that you go to the doctor because you've been ill since Wednesday. (HAD BETTER)
You had better go to the doctor because you've been ill since Wednesday.
It would be a good idea to eat healthier food. (SHOULD)
You should eat healthier food.
They make us wear a school uniform. (HAVE TO)
We have to wear a school uniform.
Taking your passport with you when you travel abroad is indispensable. (MUST)
You must take your passport with you when you travel abroad.
It's not obligatory for them to go to school on Saturdays. (HAVE TO)
They don't have to go to school on Saturdays.
It isn't necessary for us to get up early. (NEEDN'T)
We needn't get up early.
If you're tired, I advise you to go to bed. (OUGHT TO)
If you're tired, you ought to go to bed.
I can lend you some money, so it isn't necessary for you to go to the bank. (NEED TO)
I can lend you some money, so you don't need to go to the bank.
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 don't have permission to hang out here during break time. (CAN)
Students can't hang out here during break time.
It's not a good idea to speak loud in a library. People are studying! (HAD BETTER)
You had better not speak loud in a library. People are studying!
Students are prohibited to use their mobile phones during class. (MUST)
Students mustn't use their mobile phones during class.
It is necessary that you go to the bank tomorrow. Only you can solve this problem. (NEED TO)
You need to go to the bank tomorrow. Only you can solve this problem.
Are you crazy? You don't have permission to use mom's credit card! (BE ALLOWED TO)
Are you crazy? You aren't allowed to use mom's credit card!
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.
Sorry! I don't have permission to go out with you tonight. (BE ALLOWED TO)
Sorry! I'm not allowed to go out with you tonight.
