This document defines and provides examples of adjective phrases. It states that an adjective phrase is a phrase that describes a noun, like "a coat made of thick fur" where "made of thick fur" is the adjective phrase. It discusses how adjective phrases can begin with present participles, like "animals eating grass" where "eating grass" is the adjective phrase. It also explains how to distinguish between participial phrases acting as adjectives versus verbs using helping verbs.