1. by HERBER

2. Must is most commonly used to express certainty
Must is most commonly used to express certainty. It can also be used to express necessity or strong recommendation.
Example:
This must be the right answer.
You must study hard .

3. must not = mustn’t can be used to prohibit actions.
Example:
You mustn’t kick the ball
when you play basketball.

4. He must do his homework.

5. helmet
She must wear a helmet.
Helmet

6. He mustn’t sleep in class.

7. You mustn’t cross the street now.
You must stop here.
You mustn’t cross the street now.

8. He mustn’t kick the ball.

9. You mustn’t touch the ball with your hands

10. You mustn’t overtake cars.

11. You must turn around .

12. You mustn’t smoke.

13. You must not cheat in the exams.

14. You must not walk here .

15. He must not park here .

16. Expressing obligation Expressing prohibition
Must +stem
Must not + stem = mustn’t +stem

17. DRIVING TEST
must or mustn’t ?

18. You ___________ turn right
must
mustn’t

19. You ___________ turn left
must
mustn’t

20. You ___________ turn left
must
mustn’t

21. You ___________ stop here
must
mustn’t

22. You ___________ park here
must
mustn’t

23. You ___________ turn right
must
mustn’t

24. You ___________ enter
must
mustn’t

25. You ___________ go ahead
must
mustn’t

26. You ___________ stop here
must
mustn’t

27. BYE BYE!