may and might

May, might, can, could, must, shall, should, will and would are modal verbs. They are used to express meaning of certainty or obligation and freedom to act.



Subject + modal + base form of second verb
may probability I think the opposition party may win in the next election. a chance that something is likely to happen or is true
typical occurrences After having a baby, a woman may suffer from post-natal depression.
permission - formal May I use the room? asking for permission

May is traditionally used for permission, can for ability, However, this distinction is fading. In asking permission, may is more formal than can.
request - polite May I have another piece of cake?
wishes & hopes May God be with you and watch over you.
might lower probability The newcomer might win the the best actress award. Might is mostly used as a less definite or more hesistant form of may.
suggestion You might try asking Uncle John to help you find a temporary job.
reported speech "Where are you going for the holidays, Jean?"

Jean: "I may go to Australia."

Jean said that she might go to Australia for the holidays.
Might used in reported speech when the reporting verb is in the past tense.

In negative sentences ...