This document discusses non-action verbs, which cannot be used in the progressive tense and instead indicate a state of being, senses, desires, possessions, or opinions. It provides examples of common non-action verbs like be, seem, appear, look, sound, smell, taste, feel, like, want, prefer, love, have, own, possess, think, believe, and consider. Some verbs can be either action or non-action depending on the context. The document demonstrates correct and incorrect usage of non-action verbs in sentences.