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 permission?
Can, be allowed to
You ________ to do this exercise because it's optional
You don't have to do this exercise because it's optional.
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
Use be allowed to:
I couldn't go out yesterday.
I wasn't allowed to go out yesterday.
Clue :
You are not allowed to enter the supermarket without a shirt on.
By using Modal Auxiliary Verbs:
You ________ enter the supermarket without a shirt on.
Mustn't / Can't
Which modal verb do we use to express ability in other tenses, (e.g. future, present perfect...)
be able to
Is 'should' a modal verb to express obligation?
No, it isn't
Can should be used with ¨to¨?
No.
We can't stay out late at night
We won't be able to stay out late at night
Clue:
Tomorrow I have a very important exam so I am going to study a lot.
By using Modal Auxiliary Verbs:
I … study a lot because I have a very important exam tomorrow.
have to / must
have to / must
He _______ to travel abroad soon.
He will be able to travel abroad soon.
Can must be used with ¨to¨?
NO.
You _________ do your homework as soon as possible
You should do your homework as soon as possible.
True or false: "be allowed to" is not used in present or past.
False
Replace "should" with another suitable verb:
Martin should pay more attention in class.
Martin ought to pay more attention in class
PRESENT PERFECT: They _________ (wake up) late for many weeks.
They have been able to wake up late for many weeks.
Choose the correct modal verb: You (must/should/can) obey the traffic lights.
You must obey the traffic lights.
Your friend is tired, give him/her some advice.
You should.....
You ought to...
Make a question:
You are allowed to bring over friends at home
Clue:
I advise you not to forget modal verbs before your test tomorrow.
By using Modal Auxiliary Verbs:
You … modal verbs before your test tomorrow.
ought not to forget