The document discusses adverbs of frequency and their usage. It provides examples of common adverbs like always, usually, often, sometimes, rarely and never. It explains that adverbs of frequency come after forms of the verb "to be" and usually before other verbs. It also notes that sometimes and usually can be used at the beginning or end of sentences. The document includes examples asking about study habits using adverbs of frequency and questions using "ever" and "how often". It provides practice activities for readers to use these adverbs correctly.