This document provides examples of common sentence patterns in Chinese for introducing people such as friends and roommates. It includes sample dialogs where one person introduces their roommate or friend using "zhè shì wǒ shìyǒu" or "zhè shì wǒ péngyǒu" and questions like "nǐ yǒu shìyǒu ma?" and "nǐ yǒu jǐ ge shìyǒu?". It also explains that the possessive particle "de" can be omitted when referring to people close to you and provides additional examples of using "ji" to ask about quantities under ten.