The document discusses the formation of adverbs of manner in English. It states that most adverbs of manner are formed by adding -ly to the corresponding adjective. However, there are some exceptions depending on the ending of the adjective, such as adding -ally after adjectives ending in -ic or changing the ending before adding -ly. It provides many examples of adjectives and their corresponding adverbs of manner. It also notes that not all adverbs end in -ly and gives examples of other types of adverbs.