The document discusses the conjunctions "as if", "as though", and "like" and how they are used to describe how something looks, sounds, feels, or behaves in a way that seems true but may not be. It provides examples of using these conjunctions with different verbs to talk about appearance, behavior, past tense meaning, and as an alternative to "as if/as though" in informal English. The document also includes classroom activities asking students to complete sentences using these conjunctions correctly.