modal auxiliary

AUXILIARY	USES	PRESENT/FUTUR	PAST
May	(1)   Polite request	· May I close the door,please?
	(2)   Formal permission	· You may leave the class now
	(3)   Less than 50% certainty	· This may be a manifestasiont of my deep concern as the tradition is on the brink of extinction
Might	(1)   Less than 50% certainty	·    · He might be sick
	(2)   Polite request	· Mightn’t it be better to leave little Katie at home?
Should	(1)   Advisability	· She should attend the athletic compotition next week
	(2)   90% certainty	· Mudrajt kuncoro said the goverment should have prepared a long-term solution to deal with its electricity subsidy policy
Ought to	(1)   Advisability	· I checked it out. I think you ought to know
	(2)   90% certainty	· You ought to consider the offer of training overseas
Had better	(1)   Advisability with threat of bad result	· This years love had better last
Be supposed to	(1)   Expectation	· The summit is supposed to be an opportunity for leaders to find ways to keep nuclear material away from terrorists
Be to	(1)   Strong expectation	· The concert which is to be called ”Kidung Abadi Chrisye” or “Chrisye’s Eternal Ballad”, is slated for April 5 in Jakarta
Must	(1)   Strong necessity	· The government must really start developing alternatif energy programs
	(2)   Prohibition(negative)	· You must not eat in the classroom
	(3)    95% certainty	· Indicates that there must be something special about this year’s election
Have to	(1)   Necessity	· You have to trust the engineering was done rightles and soto ayam	·         “This has to be Chrisye’s fourth concert”he said.
	(2)   Lack of necessity(negative)	· You don't have to feel like a waste of space
Have got to	(1)   Necessity	· You Got To Not Let Yourself...Brother...
Will	(1)   100% certainty	· You will be surprised at how much it improves your spirit and help your worries melt away
	(2)   Willingness	· The committee will put forword its decision to a House plenary sesion on either Tuesday or Thursday
	(3)   Polite request	· Will you clean the garage this afternoon before you go?
Be going to	(1)   100% certainty	· Jim is going to be a little bit stiff and sore from the position
	(2)   Definite plan	· We’re going to get tougher in the comings days
Can	(1)   Ability/possibility	· I can assure you that the agent wasn’t involved in the purchasing process
	(2)   Informal permission	· I can find a Japanese restaurant in every mall
	(3)   Informal polite request	· Eve, can I talk to you?? I really need some advice about problem I have
	(4)   Impossibility(negative only)	· It can’t cost more than a dollar or two
Could	( 1)   Past ability		· Depspite the fact that the suspectes could have hid evidence
	(2)   Polite request	· Could you bring some food for the picnic
	(3)   Suggestion	· The king gave a big feast so that every one could give her gift
	(4)   Less than 50% certainty	·    · Interior Minister Rodrigo Hinzpeter said leter there could be up to 10 people lightly injured from the quake
	(5)   Impossibility (negative only)	· They spent about 20 minutes there during their 1960 dive but couldn’t see much from the sea floor
Be able to	(1)   Ability	· We are likely to be able to provide stable electricity supply at the moment
Would	(1)   Polite request	· Would you mind not talking so loudly?
	(2)   Preference	· I would rather I wored for the goverment
	(3)   Repeted action in the past		· The submarine would implode in an instans if it leaked
Used to	(1)   Repeated action in the past		· The festival has branched out from what used to be a fairly strict diet of classical music and opera
Shall	(1)   Polite question to make a suggestion	·     What shall I do?
	(2)   Future with “I” or “we” as subject	·   All my life I shall remain a widow