A concept map about the modal verb CAN designed to explain its main meanings and uses in English grammar. The map shows how CAN can express ability, possibility and permission, with simple examples and structures for affirmative, negative and interrogative sentences and short answers. It also explains that can has the same form with all persons and introduces the negative form cannot / can't. A useful English grammar summary for school students, ideal for studying, reviewing and learning how to use the modal verb CAN correctly.