May or might

May or Might

1. To express (future) possibility

There is a chance that something is true or that there is a possibility of something happening.

Note: Might is used more frequently than May in spoken English. Many grammar books say it is better to use might when something is less likely, and may when something is more likely, but this is a flexible rule.

• It might rain later (= it is possible that it will rain)
• I might go to the movies tonight. (Though I'm not sure)
• I wouldn't talk to Tim right now. He may still be angry after his team lost.
• He's very good, in fact, I think he may win the competition.
• She might be late because of the public transport strike.

2. To give permission

• You may leave the table once you have finished your meal.
• You may take only one brochure.
• If you have finished the exam, you may leave the room.

May not can be used to NOT give permission or to prohibit someone from doing something.

·         You may not park your car in front of the gate.

·         You may not take more than one brochure.

3. To ask for permission

Note: Can is used more frequently than May in spoken English though May sounds more polite.

• May I sit next to you?
• May I borrow your pen?
• May I use your bathroom please?

Note: Might could also be used to request permission but it sounds very old and is not common.

4. May: to talk about typical occurrences

May is used in academic (or scientific) language to refer to things that typically happen in certain situations.

• Drivers may feel tired if they do not take a break every 2 hours.
• Adults may find it difficult to sleep if they use technology before going to bed.
• These tablets may produce serious side effects if not taken in the correct dosage.

5. Speculate about past actions (May + have + past participle)

• She is late. I think she may have missed her plane.
• It may have already been broken before you bought it.
• What was that noise? It may have been a dog outside our window.

6. To express wishes

• May you both live a long and happy life together.
• May the New Year bring you love and happiness.
• May all your wishes come true.
• May the odds be ever in your favor.
• May the Force be with you. :)