modal verbs in the context of rules and restrictions

Lesson 12
Grammar in Use.
 The use of modal verbs

must/have to,
mustn’t, should/ought to for
obligation, prohibition and advice in
the context of social issues (rules and
restrictions).


Exercise 1. Correct the errors in verb forms. Write
the correct verb form in your copybooks.
 He must took part in a clean-up

campaign.
 He can to adopt an animal.
 He should helps the environment.
 She can creating a natural habitat.
 Do you must go to a fundraiser?
 They don’t must litter in the park.


How can you comment on the corrections?

 He (must took )must take

part in a clean-up

campaign.
 He (can to adopt) can adopt an animal.

 He (should helps) should help the environment.
 She (can creating) can create a natural habitat.
 (Do you must) Must you go to a fundraiser?
 They (don’t must) mustn’t litter in the park.


MODALS: can/could, may/might, must,
shall/ should, will/ would
are followed by the bare infinitive.
 don’t take –s in the 3 person singular
either in modal or main verb.
 don’t take –ing or –ed suffixes.
 No do/does for questions and negations
 come before the subject in questions and
are followed by not in negations.
 don’t have tenses in the normal sense.



DO YOU KNOW THESE
SIGNS?



Match the sign to its meaning.








1.

2.

3.
4.



A) Sterile Mouth
Shield Required



B) Smoking Allowed



C) Sterile Booties
Required



D) Wash Your Hands
To Prevent Germs







5.

6.

7.

 E) Slipping Hazard
 F) Falling Hazard
 G) Nuclear Hazard
 H) Laundry Facility



8.


Check your answers
 1. B
 2. C
 3. D
 4. A
 5. G
 6. H
 7. F

 8. E


This is the sign of private property.
You have to stay out of this place.
You mustn’t enter.











FUNNY SIGNS AND NOTICES