Adverbs of manner are used to describe how an action is performed. They are typically formed by adding "-ly" to an adjective, such as "slow" becoming "slowly". Some adverbs have irregular forms that must be memorized. Adverbs of manner are placed after the verb in simple sentences and after the object in sentences with an object. They can be compared using "-er" and "-est" or "more" and "most". Worksheets are provided to practice using adverbs of manner.