This document discusses adverbs and how they are used to describe verbs. It provides examples of sentences using adverbs correctly formed with the -ly suffix added to an adjective. The document emphasizes that adverbs are used to describe how an action happens, as in the example sentence "She is reading loudly". It reminds the reader that to form an adverb from an adjective, the suffix -ly is added, such as loud + ly to make loudly.