We can use 'may' to ask for permission. However this is rather formal and not used very often in modern spoken English.

  • May I leave now?
  • May I borrow your dictionary?
  • May we think about it until tomorrow?

We use 'may' to suggest something is possible.

  • Philip may come to stay with us
  • I may not have time to do it straightaway.
  • It may snow later today.


We use 'might' to suggest a small possibility of something. Often we read that 'might' suggests a smaller possibility that 'may', there is in fact little difference and 'might is more usual than 'may' in spoken English.

  • It might rain this afternoon.
  • She might be at home by now but it's not sure at all.
  • I might not have time to go to the shops for you.
  • I might not go.

For the past, we use 'might have'.

  • He might have tried to call you while you were out.
  • I might have left it in the taxi.




exercise 1

exercise 2

exercise 3

exercise 4

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