The document defines and provides examples of different types of relative clauses and relative pronouns in English, including: - Defining relative clauses use pronouns like who, that, which to identify a specific antecedent. Non-defining clauses use commas and provide extra information. - Relative pronouns who, which, that, when, where, whom, whose are used depending on if referring to a person, thing, place, time or possession. - Subject and object pronouns depend on if the relative pronoun is the subject or object of the clause. Examples are given of combining sentences using defining and non-defining relative clauses.