The document provides information on relative clauses: 1) It explains that relative pronouns like who, whom, which, and that refer to the noun before it. 2) It discusses using who for people as subjects, whom for people as objects, and which for things. It notes that 'that' can be used instead. 3) Examples are provided to illustrate using relative pronouns to combine sentences while omitting repeated nouns. Exercises are included for students to practice forming relative clauses.