Hi Rhem. We can use 'may' to ask for permission. However this is rather formal and not used very often in modern spoken English * May I borrow your pen? * May we think about it? * May I go now? We use 'may' to suggest something is possible * It may rain later today. * I may not have time to do it today. * Pete may come with us might 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. * She might be at home by now but it's not sure at all. * It might rain this afternoon. * 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 while I was out. * I might have dropped it in the street.