By Keith Catherine Relatorres

1. MODAL
VERBS
By : Group 8

2. What are
MODAL
VERBS?
They Are :
- can
- could
- must
- shall
- need
- may
- might
- should
-will
-ought to

3. They are Auxiliary verbs that provide additional and
specific meaning to the main verb of the sentence.
Modal verb are sometimes reffered to as
Modal Auxiliary verbs because they help other verbs

4. How do we use MODALS?
They do not accept conjugation
They do not need other Auxiliary
verbs
S
subject
V
verb
M
Example : Mary could play the piano.

5. Form
There is no "s" in singular
There is no "do/does" in the question
There is no "don't/doesn't" in the negative
Example :
He can ski.
He cans ski / He can skis
Can he ski?
Does he can ski?
They can't ski.
They don'tcan ski.

6. Form
Modal verbs
do not have infinitives or -ing forms
Example :
to can / caning to must / musting
×
×
Modal verbs
are followed by an infinitive without to
except for ought to
She study.
must
We have gone the other way
should

7. Form
Modal verb do not have all the
tenses.
Modal verbs use other verbs to complete the tenses
Can is completed with be able to
Must is completed with have to
______
___
___ ______

8. They can have different meanings depending on
the situation they are used
To understand it better we are going to divide them into 4 categories
- modal verbs of obligation, no obligation, prohibition and advice
- modal verbs of ability and permission
- modal verbs of speculation and deduction
- modals perfects : They are used to express a situation in the past.
WHAT DO THEY
EXPRESS?

9. CATEGORIES

10. Modals of Obligation, no obligation, prohibition, and
advice

11. Modals of Ability and permission

12. 4
Modals of speculation and deduction
These words all express uncertainly or possibility. Could
is not used with not in this context.
The meaning for all three words is approximately 50% probability. But if
we stress the modal verb strongly in speech the probability is reduced

13. Modal Perfects
They are modals reffered to actions that
happened in the past
MODAL + HAVE
+ verb in past participles
It must have a difficult decision
been
They should have her to their wedding
invited

14. Modal Perfects

15. Practise
1.) My son ______ be home by now.
Where can he be?
a. have to
b. would
c. should
d. could

16. 2.) I think your thumb is broken. You
_____ go to the emergency room.
a. might
b. could
c. ought to
d. can

17. 3.) If you are interested in losing
weight, you _____ try this diet.
a. could
b.musn't
c. don't have to
d. had to

18. 4.) Johnnie's fallen down the stairs,
I ______ call an ambulance!
a. will
b. might
c. may
d. ought to

19. 5.) You ______ come early.
We won't leave until 9
o'clock
a. has to
b. must
c. needn't
d. can't

20. Answer :
1. C
2. C
3. A
4. A
5. C

21. Thank you