Could you please answer the following questions that I have?
1. I would like to know the difference between "may not" and "might not".
2. I would like to know the difference among "may", "might" and "could".
May and might
AskOxford: Might or May?
may, might. The Columbia Guide to Standard American English. 1993
English Grammar Lessons
Grammar Girl :: May Versus Might
Could, may and might