This document discusses different modal verbs in English including their meanings and uses. There are 9 main modal verbs - can, could, may, might, shall, should, will, would, and must. Each modal verb has specific uses such as expressing ability, permission, requests, suggestions, obligations, and past habits. For example, can expresses ability or permission, could expresses past ability or polite requests, and shall is used to make formal requests to elders. The document provides examples to illustrate the different uses of each modal verb.