If we are going to be late, we ought /'d better call her.
'd better
You’d better leave before there’s an argument. a) You should go now. b) You don’t need to go yet.
A
I'm worried about Eva. I SHOULD / MUST have told her the truth.
SHOULD
They have to discuss their problems or they will get worse. a) Perhaps they should discuss their problems. b) It’s important that they discuss their problems.
B
My parents had to explain what was happening. a) It was a good idea to explain. b) They were obliged to explain.
B
you didn't need / needn't have brought your laptop, we've got one here.
needn't
They wear a school uniform. (COMPULSORY)
IT IS COMPULSORY TO WEAR A SCHOOL UNIFORM
Go to bed early. (SUPPOSED)
In most countries it’s forbidden to be married to more than one person. a) You mustn’t be married to more than one person. b) You needn’t be married to more than one person.
A
He feels he ought to be honest. a) He told the truth. b) He’s going to tell the truth.
B
Ask for permission to leave the exam early. (HAVE TO // MUSTN'T)
We had evidence but we couldn’t use it. a) We didn’t want to use the evidence. b) We weren’t permitted to use the evidence.
B
You didn’t have to tell everyone what I’d said. a) It was unnecessary to tell everyone but you did. b) You were obliged to tell everyone.
A
Do your homework. (OUGHT)
YOU OUGHT TO DO YOUR HOMEWORK
I wasn’t supposed to tell her about the party.a) I shouldn’t have told her about the party. b) I had to tell her about the party.
A