"May I" is a polite phrase used to ask for permission to do something. It is often used in formal situations or when speaking to someone in authority. For example, a student might say, "May I leave the classroom?" to request permission from a teacher. Using "May I" shows respect and consideration for the other person's feelings or rules. It is different from "Can I," which focuses more on ability rather than permission. This distinction is important in social interactions, especially in settings like schools, workplaces, or formal events.