Modal Verbs - Coggle Diagram
Modals used to talk about situations in the present (or future for possibility):
You could have told me your mum was in hospital.
You might have known the answer.
You could have played better
You must have known I was angry, it was so obvious!
I will take you to the airport. I have nothing to do tomorrow.
Criticism or regret
I should have known that my brother was in trouble.
You may not wear shoes in the office.
You can use my car if you like.
Customers may request a refund within a period of 30 days.
don't have to
I don't have to work on Sundays.
You mustn't smoke here.
have got to
I have got to study tonight.
We have to wear a uniform when we're working in reception
I must phone my dad. It's his birthday today.
I could swim when I was 5.
Be able to
I wasn't able to finish my exam.
I can swim.
Possibility and certany