Modal Verbs :fire: (Possibility and Deduction (can't. we are certain…
Modal Verbs :fire:
Possibility and Deduction
can't. we are certain sth is impossible
He can't be her father, he's too young.
must. We are certain
She must be angry because we have broken her e-book.
That film could be interesting.
She might study fashion.
I may go to the party next weekend.
Obligation and no obligation
We must study harder.
We needn't wear a uniform.
don't have to
We don't have to wear a uniform.
have to / need to
I have /need to take my passport to travel to the US.
managed to /didn't manage to
I managed to get tickets for the concert. I didn't manage to get tickets for the concert.
I can speak French but I can't speak Chinese.
could / couldn't
I could swim when I was 4 but I couldn't ride a bike.
be able to /not be able to
They were able to get a taxi after the concert.
He's able to go to the party. He isn't able to help you.
should / shouldn't
You should study harder. You shouldn't drink so much coffee.
had better implies negative consequences
You'd better go to sleep or you won't be able to get up early tomorrow.
ought to / ought not to (more formal)
The doctor told me I ought to do more exercise and I ought not to spend long hours in front of TV.
You can't use your dictionaries during the exam.
You mustn't smoke in hospitals.
be allowed to
The students are allowed to listen to music while they are at the computer room.
We can drink water while we are doing the exam.