Ability
Which modal verb do we use to express ability in the present?
Can
Which modal verbs do we use to express obligation?
Must, Have/has to
Which modal verbs do we use to give advice?
Should/ought to
Which modal verbs do we use for ability?
Can, could, be able to
By using Modal Auxiliary Verbs:
You ________ use mobile phones during the Cambridge Exams.
Mustn't / Can't
Which modal verb do we use to express ability in the past?
Could
Which modal verbs do we use to express prohibition by laws and rules?
Mustn't
Can ought to be used to express ability?
No
Which modal verbs do we use for probability?
should/ought to
By using Modal Auxiliary Verbs:
You ________ enter the supermarket without a shirt on.
Mustn't / Can't
Is it possible to use could for present abilities?
No, it is not.
Is 'should' a modal verb to express obligation?
No, it isn't
Can should be used with ¨to¨?
No.
Is must a modal verb to express possibility?
No, it isn't
By using Modal Auxiliary Verbs:
I … study a lot because I have a very important exam tomorrow
have to / must
True or false: can is more polite than could
False
Can must be used with ¨to¨?
NO.
True or false: Shouldn't is used for prohibition
false
True or false: May is more polite than can.
True
I think it …. rain this afternoon because the sky is dark and cloudy.
May, is going to
She (should / listening) to the teacher. Now she won’t know what’s in the exam.
She should have been listening to the teacher. Now she won’t know what’s in the exam.
You (could / not buy) the book last week. The bookstore was closed.
You couldn’t have bought the book last week. The bookstore was closed.
We already had enough food so you (need / bring) the salad to the party.
We already had enough food so you needn’t have brought the salad to the party.
He (ought to / explain) everything the moment he arrived, now it is too late.
He ought to have explained everything the moment he arrived, now it is too late.
This exam was quite hard, it (must / take) a long time to study.
This exam was quite hard, it must have taken a long time to study.