M O D A L V E R B S

Can
Poder, ter habilidade de, saber
fazer, ter permissão de
For permission, requests possibility / ability, inability
- Can I use your phone?
- Can you quote me a price for CIF Santos?
- Passengers can take a small bag onto the plane with them.
- I can’t find my boarding card.
.
Could
Passado de Can - Poderia
For permission, requests, suggestions
- Could I interrupt a moment?
- Could you speak up?
- We could ask for volunteers.
.
May
Para expressar permissão, possibilidade, desejo, obrigação
For permission
- May I borrow your car?
.
Might
Futuro de Can
Usado para indicar condição ou possibilidade
Future possibility
- It might be possible to reduce the price.
.
Shall
(Shan’t – Negative short form of Shall not)
Usado na formação do futuro, Dever
For suggestions, offers, asking what to do
- Shall we ask for volunteers?
- Shall I call a taxi for you?
- What shall I do?
.
Should
Passado de Shall - Usado para exprimir possibilidade, conselho, condição
For recommending action, saying what is right or correct
- I think we should teach the French sales staff English.
- The government should increase taxes on petrol.
.
Have to
For obligation, prohibition
- You have to take your Passport with you.
- You don’t have to clear Customs.
.
Have got to
For obligation
- You’ve got to pass here
.
Must
Usado para indicar obrigação, necessidade ou probabilidade
For obligation, prohibition
- Passengers must make sure their bags are clearly labeled.
- Passengers mustn’t carry guns or explosives.
(mustn’t = must not)
.
Ought to
Mesmo uso do should
For suggestion
- You ought to be in the airport (2) two hours prior departure.
- You ought to go with someone.
.
'd better (had better)
Mesmo uso do should
For suggestion
- You’d better talk to your father.
.
Need to
Usado para indicar obrigação, necessidade.
For necessity
- You need to take money.
- You need to check the weather.