1. must
mustn’t

2. By Mihoubi

4. Must expresses obligation in affirmative form .
Examples :
- You must study hard .

5. must not = mustn’t expresses prohibition in negative form .
Example:
You mustn’t drink and eat inside the classroom.

6. Put the words in order to get the correct sentences
Activity one :
Put the words in order to get the correct sentences

7. the
and
care
they
plants
must
water

8. They must water and care the plants.

9. plant
must
in the parks
flowers
trees
and
and your house.
you

10. You must plant trees and flowers in the parks and your house.

11. fire
in the streets.
you
things
Mustn’t

12. You mustn’t fire things in the streets.

13. you
throw
on the floor.
rubbish
Mustn’t

14. You mustn’t throw rubbish on the floor.

15. Fill in the gaps using ‘ must or mustn’t’
Activity two :
Fill in the gaps using ‘ must or mustn’t’

16. He …………do his homework.

17. She ……. wear a helmet.

18. He ………… sleep in class.

19. You ………….. cross the street now.
You ……… stop here.
You ………….. cross the street now.

20. You …………..touch the ball with your hands

21. You ___________ stop here
must
mustn’t

22. You ___________ go ahead
must
mustn’t

23. BYE BYE!