may be:这里里的“may"是情态动词,请注意它首先为动词,从词性上就
可以区分它与"maybe"的不同,所以在句中的作用也就不一样了.
a)情态动词“may"后接动词原形一起构成句子的谓语成分.
如：We may go abroad for a holiday,but my wife always
worries every thing,so we might not go anywhere.
b)may be句形,构成一种对现在发生事情的主观推测,表示可以现在会发
生什么事情.
如：It may be rain today,you'd better take a umbrella with you.
