This document discusses English modal verbs including can, could, may, might, should/ought to, and must. It provides examples of how each modal verb is used to indicate ability, permission, possibility, obligation, recommendation or suggestion. It also covers the negative forms of each modal verb.

1. MODAL VERBS
CAN
COULD
MAY
MIGHT
SHOULD / OUGHT TO
MUST

2. MODAL VERBS
Todos os modais são usados sem
alteração de forma com qualquer
sujeito,
não recebem a partícula "to" antes
deles
os verbos colocados depois deles
devem ficar no infinitivo sem "to "
exceto com ought to

3. MODAL VERBS
 I can see
 You can see
 He can see
 She can see → Can she see?
 It can see She cannot/can’t see.
 We can see
 They can see
 The students can see

4. MODAL VERBS
NEGATIVE FORMS
CAN CANNOT CAN’T
COULD COULD NOT COULDN’T
MAY MAY NOT
MIGHT MIGHT NOT MIGHTN’T
SHOULD SHOULD NOT SHOULDN’T
OUGHT TO OUGHT NOT TO OUGHTN’T
MUST MUST NOT MUSTN’T

5. MODAL VERBS
CAN → posso, pode...
(present / future)
INDICA:
habilidade
capacidade (TO BE ABLE TO)
permissão informal
possibilidade

6. Examples of CAN
 We can speak Portuguese and English.
 We ARE ABLE TO speak Portuguese and
English.
 Can I go to the restroom?
 He can visit France when he travels to
Europe.
 You can go now.

7. COULD → podia, poderia...
INDICA
passado de CAN
capacidade ou habilidade no
passado (TO BE ABLE TO)
pedido educado (FORMAL)

8. Examples of COULD
 My brother could run 10 kilometers every
other day when he was young.
 He WAS ABLE TO run 10 kilometers...
 The pilot couldn’t land because of the fog.
 They could have visited France when they
went to Europe.
 Could you help me carry the baggage
please?

9. MAY →posso, pode...
(present / future)
INDICA
Permissão FORMAL
(TO BE ALLOWED / TO BE
PERMITTED)
Probabilidade - GRANDE

10. Examples of MAY
 May I come in?
 You may leave the room when you finish the
test.
 You ARE ALLOWED TO leave the room ...
 We may see many important people at the
international conference.
 There may be many homeless people after
the earthquake.

11. MIGHT→posso, podia
INDICA
 passado de MAY
 permissão FORMAL no passado
(TO BE ALLOWED / TO BE
PERMITTED)
 Probabilidade – PEQUENA (present)

12. Examples of MIGHT
 My mom said I might go to the show.
 She said I WAS ALLOWED TO go to the
show.
 Might you go out alone when you were 14?
 Maybe they might come for my birthday.
However I don’t believe it.
 We might meet an ET at our backyard
someday.

13. SHOULD → devo, deveria...
(present / past)
INDICA
conselho
recomendação
sugestão
crítica (negative/ shouldn’t)

14. Examples of SHOULD
 You should answer your questions now.
 He said we should come back tomorrow.
 You should turn off your cell in classroom.
 What should I do now?
 You shouldn’t be so impolite!
 They shouldn’t drink so much!

15. OUGHT TO→devo, deveria...
único dos modais a usar "to" depois
dele,
Sinônimo de SHOULD
conselho
recomendação
sugestão

16. Examples of OUGHT TO
 You should answer your questions now.
 You OUGHT TO answer your questions
now.
 He said we should come back tomorrow.
 He said we OUGHT TO come back
tomorrow.

17. MUST → tenho que, devo...
INDICA
obrigação
forte necessidade
dedução lógica
sinônimo: HAVE TO

18. Examples of MUST
 We must respect traffic laws.
 We HAVE TO respect traffic laws.
 You must buy food for your children.
 He looks sick, he must go to the doctor’s.
 That man has a latest model car and a nice,
big house. He must be well-off. (DEVE)
 Susan is always sad, she must have a
problem. (DEVE)

19. MUST - negative forms
 You must study for your tests.
 You MUSTN’T study for you tests.
MUSTN’T = PROHIBITION
 You MUSTN’T scream in a hospital.
 You MUSTN’T run a read light.

20. MUST - negative forms
 You must study for your tests.
 You DON’T HAVE TO study for your tests.
 You NEEDN’T study for your tests.
NOT NECESSARY