May
CAN
Might
Like most modal verbs, the modal verb may is an auxiliary verb and must always be accompanied by another verb with its own meaning and in the infinitive mood.
The verb can is a very popular verb in English that is often used to talk about ability or permission. Can is usually used as a modal verb, which means that it is always used together with a main verb. However, can can also function as a main verb when it means to can.
We often use might to suggest a situation or possible explanation, although we do not claim that it is 100% true, or when we are not sure what is going to happen: