This lesson is about modal auxiliary verbs

1. Modal Auxiliary Verbs

3. Modal Auxiliary Verbs
must
might
may
will
would
can
could
shall
should
It adds
meaning to
the verbs.
M-
M-
M-
W-
W-
C-
C-
S-
S-

4. Rules of Modal Auxiliary Verbs
1. Modal verb is always with an action verb.
Can + sing = can sing must + try = must try
Should + attend = should attend may + help = may help
2. Modal verbs take no ‘s’ in the third person singular.
Singular subject modal verb verb
Carla can illustrate the process.
The man should quit smoking.

5. Rules of Modal Auxiliary Verbs
3. Modal verbs do not change their form according to tense.
Subject modal verb verb
She might give us a discount.
4. Use modal verbs in negative sentences like in other auxiliary
verbs.
Example:
Subject modal verb NOT verb
I can not speak French.

6. Rules of Modal Auxiliary Verbs
5. Contractions in modal verbs
Modal verb Negative Contractions
Might Might not Mightn’t
Must Must not Musn’t
May May not (no contraction)
Can Can not Can’t
Could Could not Couldn’t
Will Will not Won’t
Would Would not Wouldn’t
Shall Shall not Shan’t
should Should not Shouldn’t

7. 6. With interrogative phrases, modal verbs are used like other
auxiliary verbs.
Modal Verb subject verb
Can you help me?
Will you let him?
Can you not speak loudly?
Rules of Modal Auxiliary Verbs

8. Modal Auxiliary Verbs
Modal verb When to use it Sample sentence
Might Weaker possibility She might give us a discount.
May Stronger possibility The teacher may be late today.
Permission (formal) May I leave now?
Must Probability/ Logical
assumption
She must be stuck in traffic.
Necessity I must go home right now.
Prohibition You must not smoke here.

9. Modal Auxiliary Verbs
Modal verb When to use it Sample sentence
Will Future time I will leave at 7 o’clock.
Promise/
willingness
I will give money to charity this
Christmas.
Polite question Will you help me with this?
Would Polite question Would you help me with this?
Invitations/
preferences/
desires
I would like a cup of tea.
Would you prefer apples or oranges?

10. Modal Auxiliary Verbs
Modal verb When to use it Sample sentence
Can Ability I can speak English.
Suggestion/
Option
You can call him tomorrow.
Impossibility That can’t be here.
Request Can you help me?
Could Past ability I could do trigonometry 5 years ago.
Polite question Could I call you?
Possibility/
Impossibility
She could be here.
She couldn’t be here.
Suggestion You could try doing this.

11. Modal Auxiliary Verbs
Modal verb When to use it Sample sentence
Should Recommend You should try this new year.
The right thing
to do/ obligation
We should deal with this right now.
Uncertain
prediction
He should be home soon but I’m not
sure.
Shall Offer Shall I help you with that?
Confirmation I shall meet you there at midnight.
Promises You shall be the first person to know.

12. Group Task
1. You (mustn’t, couldn’t) touch that dog. It looks dangerous.
2. You (could, should) feed the cat at least twice a day.
3. I (would, might) rather stay at home than go out and have
dinner in a restaurant.
4. I (will, may) attend the meeting tomorrow.
5. When I was six, I (could, should) play the violin.
6. He (shan’t, can’t) be John. He said he was going to Manila.
7. I (might, would) ask you to help me later.
8. I think you (should, might) relax more. You look exhausted.
9. I promise, I (would, will) stop smoking.
10. I (can, could) finish the task today.

13. Homework
1. That (can’t, couldn’t) be Cynthia. She hasn’t leave home yet.
2. When I was younger, I (can, could) sing well.
3. The sky is dark. It (may, might) rain today.
4. I reviewed a lot but I think I (might, may) fail the test.
5. They (should, shall) finish their task today.
6. All the children (should, must) have a good education.
7. All passengers (must, can) put on their seatbelts during take-off
and landing.
8. I promise, I (should, will) graduate this year.
9. I (could, would) prefer written exams than oral exams.
10. He (should, would) be here by 10pm but I’m not sure.

14. Modal Verbs Challenge
FAMILY FEUD EDITION

15. Modal Verbs Challenge
•Give one modal auxiliary verb.

16. Modal Verbs Challenge
•Choose the most appropriate
modal verb in the sentence.

17. 1.The bus (should, could) be
here by now. That’s what
the schedule says.

18. 2. The company boss (must,
can) be extremely rich if he
owns several sports car.

19. 3. She (might, must) be the
wife of the CEO because I
saw her in his pictures.

20. 4. The boy (can, could)
answer complex math
problems.

21. 5. When I was eight, I (can,
could) draw well.

22. Modal Verbs Challenge
•Give one modal auxiliary verb.

23. 6. You (must, should) follow
the rules.

24. 7. You (must, should) bring
the laptop wherever you go.

25. 8. It (wouldn’t, couldn’t) be
her. I saw her post that she
was in Legazpi.

26. 9. I (might, can) sleep early
tonight.

27. 10. You (could, should) obey
your teacher.

28. Modal Verbs Challenge
•Give one modal auxiliary verb
that shows ability.

29. can

30. Modal Verbs Challenge
•Give one modal auxiliary verb
that shows polite questions.

31. Will
Would
Could

32. Modal Verbs Challenge
•Give one modal auxiliary verb
that shows past ability.

33. Could

34. Modal Verbs Challenge
•Give one modal auxiliary verb
that shows promises.

35. Will
Shall

36. Modal Verbs Challenge
•Give one modal auxiliary verb
that shows logical assumption.

37. Must

38. Modal Verbs Challenge
•Give one modal auxiliary verb
that shows permission.

39. May

40. Modal Verbs Challenge
•Give one modal auxiliary verb
that shows uncertain
prediction.

41. Should

42. 11. I (should, would) like to
go to the cinema.

43. 12. (Should, Can) you please
reduce the price?

44. 13. (May, Must) we come in?

45. 14. The adobo (should,
would) be done by dinner
time.

46. 15. You (could, may) sit
wherever you like.

47. Quiz
• Use the correct modal verb.
1. You (mustn’t, couldn’t) park at a no-parking area.
2. I (might, would) go to the cinema to see the movie.
3. I (must, would) like to take the back seat.
4. Six years ago, she (would, could) do exercise twice a day.
5. (Would, Should) you like to be my partner?
6. (Will, Can) you marry me?
7. The students (can, may) recite the poem well.
8. It (might, could) rain today.
9. (Could, Should) you pass me the sugar please?
10. you haven’t eaten all day, you (must, would) be hungry
right now.

48. Quiz
• Use the correct modal verb.
1. You (mustn’t, couldn’t) park at a no-parking area.
2. I (might, would) go to the cinema to see the movie.
3. I (must, would) like to take the back seat.
4. Six years ago, she (would, could) do exercise twice a day.
5. (Would, Should) you like to be my partner?
6. (Will, Can) you marry me?
7. The students (can, may) recite the poem well.
8. It (might, could) rain today.
9. (Could, Should) you pass me the sugar please?
10. You haven’t eaten all day, you (must, would) be hungry
right now.

49. Remedial
• Use the correct modal verb.
1. I have not seen him in his office. He (must, could) be
absent today.
2. The projects (could, should) be on my table by three.
3. When she was younger, she (can, could) jump that high.
4. I (will, would) pay you at the end of the month.
5. (Can, could) you speak Bikol dialect?

50. Remedial
• Use the correct modal verb.
1. I have not seen him in his office. He (must, could) be
absent today.
2. The projects (could, should) be on my table by three.
3. When she was younger, she (can, could) jump that high.
4. I (will, would) pay you at the end of the month.
5. (Can, could) you speak Bikol dialect?