The document discusses the present simple and present continuous tenses in English grammar. It provides examples of verbs used in their present simple and present continuous forms, and distinguishes between action verbs and non-action verbs. Action verbs can be used in both the present simple and present continuous tenses, while non-action verbs are generally only used in the present simple tense. The document also lists some verbs that can function as either action or non-action verbs depending on the context.