Modal Auxiliaries and Similar Expression

AUXILIARY	USESS	PRESENT/FUTURE	PAST
May	3) Less than 50%		Vassos Shiarly said the government is ready to take any
			additional austerity measures that may be required to meet the target
	2) Formal Permission	May spark increasing concern regardling the pace of
		the ongoing U.S. economic expansion.
Might	1) Less than 50%		President Obama promised to double exports over the next
			five years. The U.S. might actually meet that target.
	2) Polite request	Is The lending agency might need as
		large a boost in financial resources ?
Should	1) Advisability		China should have guarded against a hard landing
			through fiscal policies designed to support consumption.
	2) 90% certainty	it also said that China's central bank should
		resist cutting interest rates for the time being.
Ought to	1) Advisability		they ought to learn from these mistakes and progressively
			adopt beliefs consistent with economics instead.
	2) 90% certainty	We ought to think and plan ahead
		for other branches of science.
Had Better	1) Advisability with	They had better have a quality of being desirable and
	threat of bad result	have enough of value to be saleable.
Be Suppoed to	1) Expectation	in theory all these different variants are supposed to be
		committed to the flourishing of the individual.
Be to	1) Strong expectation	the suppliers of credit, the bankers, must
		be to blame.
Must	1) Strong necessity	who must court the votes of the 99 %
		for their own re-election
Have to	1) Necessity	you have to go back only one step to find the cause.
	2) Lack of necessity	you don't have to go back only one step to
		find the cause.
Have got to	1) Necessity	we have got to realize they are not just
		women's issues
Will	1) 100% certainty	the World Bank, will hold their spring meetings
		in Washington at the end of next week.
	2) Willingness	discussions will be preceded by a meeting of
		finance ministers
Be going to	1) 100% certainty	The business recovery is not going to falter
	2) definite plan	I'm going to go where the jobs are
can	1) possibility	We can ignore the financial mess in Europe and be assured it
	2) impossibility	We can't be ignore the financial mess in
		Europe and be assured it
Could	2) Polite request	could you first outline what you mean by liberalism?
	1) Past ability		I'm so glad we could clear that up last week
be able to	1) ability	insurance companies will no longer be able to
		deny coverage based on preexisting conditions
Would	1) Polite request	Would you want to give me an economic science?
	2) Preference	10 million college students would get their financial
		aid cut by $1,000
used to	1) Repeated action		Obama used to talk about economy in his politic activity
	in the past
shall	1) Polite question to	Shall he explain about our economy activity?
	make a suggestion
	2) Future with "I" or	I shall explain about ecomoy activity
	"we" as subject