The document provides instruction and discussion about modal verbs. It defines modal verbs as helping verbs used to convey meanings like ability, permission, and necessity. It lists common modal verbs like can, may, must, and should. It gives examples of how modal verbs are used and provides a discussion about identifying modal verb functions in sentences. The document asks readers to think about using modal verbs in their own conversations and provide examples. It also contains an activity where readers fill in blanks with the correct modal verb and identify its function.