This document discusses adverbs of frequency in English. It defines adverbs of frequency as words that indicate how often something occurs, either definitely as in daily or weekly, or indefinitely as in sometimes or often. It provides examples of common adverbs of frequency and discusses their proper placement in sentences. The document explains that adverbs of frequency usually go before the main verb of a sentence, except with forms of "to be" where they go after. It also provides examples of using adverbs of frequency.