This document provides information on the proper use of modal verbs, nouns, adverbs, and infinitive verbs. It discusses modal verbs and their importance in communication. It also defines and provides examples of different types of adverbs including adverbs of manner, place, frequency, time, and purpose. The document explains how adverbs can modify verbs and where they are typically placed in sentences. It concludes by describing modal adverbs and how they give extra meaning to modal verbs.