I'd see a doctor if I were you. (SHOULD)
You should see a doctor.
We might not find it easy to book a seat at the last minute. (COULD)
It could be difficult for us to book a seat at the last minute.
I have an interview tomorrow, so I ought to leave soon. (BETTER)
I have an interview tomorrow, so I had better leave soon.
My parents gave me permission to go to the party. (LET)
My parents let me go to the party.
It was careless of you to leave without locking the door. (OUGHT)
You ought to have locked the door before you left.
It was wrong of me to blame you for what happened. (SHOULD)
I should not have blamed you for what happened.
A doctor took out her tonsils when she was six. (HAD)
She had her tonsils taken out when she was six.
Someone stole my phone at the shopping centre. (GOT)
I got my phone stolen at the shopping centre.
The teacher asked the students to open the window. (HAD)
The teacher had the students open the window.
Perhaps we missed the correct turning. (MIGHT)
We might have missed the correct turning.
I'm afraid you can't eat in the library. (ALLOWED)
I'm afraid you're not allowed to eat in the library.
You are required to show your student card as you enter the library. (MUST)
You must show your student card as you enter the library.
He couldn't swim until he was in his twenties. (ABLE)
He wasn't able to swim until he was in his twenties.
You should be more careful. (TO)
You ought to be more careful.
Could you please bring me a glass of water? (WILL)
Will you please bring me a glass of water?
You were expected to answer all the questions on the exam paper. (ANSWERED)
You should have answered all the questions on the exam paper.
My mom told me to take out the garbage. (MADE)
I was made to take out the garbage / my mom made me take out the garbage.
It says here that we should we reply to this invitation. (SUPPOSED)
It says here that we are supposed to reply to this invitation.
I'm certain that that's not right. (CAN'T)
That can't be right.
It wasn't necessary for you to bring an umbrella. (NEEDN'T)
You needn't have brought an umbrella.
I need to study harder. (MUST)
I must study harder.