This document discusses modal auxiliary verbs and provides examples of their usage. It begins by defining modal auxiliary verbs as verbs that express manner and add meaning to the main verb by indicating moods like ability, permission, or necessity. It provides examples of common modal verbs and their forms. The document then discusses using modal verbs to make recommendations with varying degrees of emphasis. It concludes by covering revising and editing, noting that revising examines content and ideas while editing focuses on grammar, style, and mechanics.