This document discusses frequency adverbs and how often they are used. It provides examples of common frequency adverbs like always, usually, often, sometimes, hardly ever, almost never, and never. It explains that frequency adverbs state how often an action occurs, answering the question "how often." It also discusses the grammatical structure of frequency adverbs, noting that they come before the main verb of a sentence, except when the main verb is a form of "to be," in which case the adverb comes after "to be."