This document provides information about adjectives and adjective clauses, including typical errors involving their use, what constitutes an adjective clause, the different relative pronouns used in adjective clauses and their roles as subjects and objects, how to reduce adjective clauses, and the differences between reducing and omitting adjective clauses. It also briefly discusses differences between English and Portuguese relative pronouns and provides an example class plan for teaching adjective clauses inductively using pictures and examples.