Quote:
Originally Posted by seba_870701  Hi guys.
I'd like to ask You a question about modal verbs. I thought 'may' and 'might' are modals expressing probability, but recently I've learnt that 'may not' means the same as 'must not.' it confused me a little.  Thus my question is: How to express, with modal verb, that it is possible that some event will not happen. Can I say: it may/might not happen? Or it is incorrect?  If it is wrong, provide me with a correct version, please. 
Kind regards,
Sebastian |
Seba,
Depending on use "may not" could mean either "must not" or "might not".
Examples: Seba: "May I have some cake?" Carl: "No you
may not." in this case may not means that you do not have permission. However, in the sentence "I hope I go to Florida this year but I
may not."
may not means that it may or may not occur.
It is perfectly acceptable to use "it may/might not happen"