Ability: can - could - be able to
We use 'can' and 'could' to talk about a skill or ability- She can speak six languages - My grandfather could play golf very well. I can't drive-I won´t be able to drive that lorry
Probability: may, might (something is possible) He may be in his office (perhaps) (may not) John mightnot be in his office (mightn´t)
When talking about possible plansI may (might) be going to Italy in July (it´s possible) I may (might) to to Italy in July (it´s possible)
Deduction : can´t be - must be It's snowing, so it must be very cold outside-This bill can't be right.(esta cuenta no puede estar bien) £200 for two cups of coffee!
Obligation: must (possibly based on the speaker's opinion)
have to(obligation possibly from outside)
Children must do their homework.
We have to wear a uniform at work. (I´ve got to wear uniform)
mustn´t (prohibition, it´s necessary that you do not do it)
You mustn´t be late
You mustn´t eatin the classroom, you are not allowed
don´t have to
Idon´t have to wear a suit to work
Advice - should /shouldn´t
Students should study exams in advanced
You shouldn´t be late to school
giving an opinion
I think the government should do something about the education
Permission, invitations, offers and requests.
We can use verbs such as 'can', 'could' and 'may' to ask for and give permission. We also use modal verbs to say something is not allowed.
Asking PERMISSION: To give PERMISSION
Could I leave early today, please? You can (may) go out this weekend
You may not use the car tonight.
Can we swim in the lake?
Do you think I could borrow your bike?
OFFER to do things:
Can I help you, María?
Can I get you a cup of tea?
I will open the door for you
OFFERING and INVITING:
Would you like a cup of coffee?
Would you like to come home for dinner?
I´d like (I would like) polite way of saying what you want
NEEDN´T (it is not necessary to do something)
You have plenty of time. You needn´t hurry (You don’t need to hurry / There is no need to hurry)
You needn´t give me your homework right now
Need I say more? I´d like you to stay
WHY DON´T WE….? Why don´t we watch a film tonight?
WHAT ABOUT …….(-ing)………..? What about watching a film tonight?
HOW ABOUT…….. (-ing)……...? How about watching a film tonight?
LET´S ………………….? Let´s watch a film tonight!
WE COULD ………………… We could watch a film tonight