1. modals

2. MEANING have to & must
WHAT DO THESE SENTENCES MEAN? IS THERE ANY DIFFERENCE?
In Britain, all school children have to wear a uniform.
I must do your homework every day.
The obligation is external, i.e., it is a school rule.
The obligation is internal, i.e., it is your rule .

3. STRUCTURE have to & must
Subject
have to
has to
infinitve
complements
She has to get up at 7 every day.
Subject
must
infinitve
complements
Jane must work hard to pass her exams.

4. MEANING don’t have to & mustn’t
WHAT DO THESE SENTENCES MEAN? IS THERE ANY DIFFERENCE?
In Spain, all school children don’t have to wear a uniform.
You mustn’t drive over 100 kilometres an hour.
There is no need to wear a uniform.
This is a prohibition.
You are not allowed to do this.

5. STRUCTURE don’t have to & mustn’t
Subject
don’t
doesn’t
have to
infinitve
complements
She doesn’t have to get up at 7 on Sundays. every day.
Subject
mustn’t
infinitve
complements
Jane mustn’t smoke in the school grounds.

6. MEANING should & shouldn’t
WHAT DO THESE SENTENCES MEAN? IS THERE ANY DIFFERENCE?
YOU SHOULD DO SOME EXERCISE EVERY DAY.
You shouldn’t drink coffee if you can’t sleep.
This is something that can be good for you. In other words, you’re giving advice.

7. STRUCTURE should & shouldn’t
Subject
should
shouldn’t
infinitve
complements
She should listen to her mother’s advice.
They shouldn’t shout in the classroom.

8. Some practical work

9. CAN
1. ___ you speak any foreign languages? a. May b. Can c. Have

10. HAS TO
2. Liz ___ go to work today. She has an important meeting. a. has to b. must to c. should

11. MIGHT
3. Where's Nick? He ___ be in his office. a. might b. mustn't c. is to

12. SHOULD
4. You look tired. You ___ go to bed. a. should b. must c. can

13. SHALL
5. ___ we stay or leave? a. Will b. Would c. Shall

14. SHOULDN’T
6. Jane is so tired. She ___ work days and nights. a. Should b. Mustn’t c. Shouldn’t

15. HAVE TO
7. I ___ go to see the doctor because I am very ill. a. must b. must to c. have to

16. COULD
8. Thomas ______ walk to school instead of catching the bus. a. shall b. could c. would d. must

17. CAN
9. __________ you help me? a. May b. Shall c. Can

18. PLAY
10. I can't _____ tennis very well. a. to play b. play c. playing

19. SHOULD WE DO
11. What _____ ? a. should she do b. do she should c. should she does

20. CAN I COME
12. _____ with you to the party? a. Can I come b. Do I can come c. Can come I

21. SHOULDN’T SPEND
13. She _____ so much time playing video games. a. should'nt spend b. shouldn't spend c. shouldn't spends

22. SHOULD
14. What _____ I buy him for his birthday? a. should b. can

23. CAN’T
15. Speak up! I _____ understand you. a. don't can b. can't c. shouldn't

24. Make sentences

25. If you want to …. learn English do well in life, keep fit, you have to
you don’t have to
you should
you shouldn’t
work hard.
do some sport.
learn the grammar.
go to university.
buy a dictionary.
smoke.
believe in yourself.
speak Spanish in class.

26. Exercises online