Modals in English Grammar

1.  can

Use	Examples
ability to do sth. in the present (substitute form: to be able to)	I can speakEnglish.
permission to do sth. in the present (substitute form: to be allowed to)	Can I go to the cinema?
request	Can you waita moment, please?
offer	I can lend you my car till tomorrow.
suggestion	Can we visitGrandma at the weekend?
possibility	It can get very hot in Arizona.

2. could

Use	Examples
ability to do sth. in the past (substitute form: to be able to)	I could speakEnglish.
permission to do sth. in the past (substitute form: to be allowed to)	I could go to the cinema.
polite question *	Could I go to the cinema, please?
polite request *	Could you waita moment, please?
polite offer *	I could lendyou my car till tomorrow.
polite suggestion *	Could we visitGrandma at the weekend?
possibility *	It could getvery hot in Montana.

3. may

Use	Examples
possibility	It mayraintoday.
permission to do sth. in the present (substitute form: to be allowed to)	May I goto the cinema?
polite suggestion	May Ihelp you?

4. might

Use	Examples
possibility (less possible than may) *	It might raintoday.
hesitant offer *	Might I help you?

5. must

Use	Examples
force, necessity	I must go to the supermarket today.
possibility	You must be tired.
advice, recommendation	You must see the new film with Brad Pitt.

6. must not/may not

Use	Examples
prohibition (must is a little stronger)	You mustn't work on dad's computer.
	You may not work on dad's computer.

7. need not

Use	Examples
sth. is not necessary	I needn't go to the supermarket, we're going to the restaurant tonight.

8. ought to

simliar to should – ought to sounds a little less subjective

Use	Examples
advice	You ought to drive carefully in bad weather.
obligation	You ought to switch off the light when you leave the room.

9. shall

used instead of will in the 1st person

Use	Examples
suggestion	Shall I carry your bag?

10. should

Use	Examples
advice	You should drive carefully in bad weather.
obligation	You should switch off the light when you leave the room.

11. will

Use	Examples
wish, request, demand, order (less polite than would)	Will you please shutthe door?
prediction, assumption	I think it will rain on Friday.
promise	I will stop smoking.
spontaneous decision	Can somebody drive me to the station? - Iwill.
habits	She's strange, she'llsit for hours without talking.

12. would

Use	Examples
wish, request (more polite than will)	Would you shut the door, please?
habits in the past	Sometimes he wouldbring me some flowers.