How significant is the use of modals in your daily lives and give a examples?

Modals play a crucial role in daily communication by expressing necessity, possibility, permission, and ability. For example, when asking for permission, one might say, "May I borrow your pen?" indicating a polite request. Similarly, expressing obligation can be seen in statements like, "You must finish your homework before going out." These nuances help convey attitudes and intentions, making language more precise and meaningful.