Mastering Communication Skills teaches students basic and advanced grammatical rules and principles. Paragraphs and composition, participial phrases, gerunds and infinitives, adverbs, adjectives, noun and pronoun clauses, mood of verbs and other concepts are all covered. Lessons contain explanations of the principles followed by examples and exercises. 245 pages with index and glossary. Book 6, Grade 12. Answers are sold separately in the Applications of Grammar Book 6 Teacher Key. Grade 12.