Unit One: Understanding the Basic Sentence -- Unit Two: Making Subjects and Verbs Agree -- Unit Three: Using Correct Verb Tense -- Unit Four: Understanding Pronouns -- Unit Five: Placing and Punctuating Modifiers -- Unit Six: Using Commas Correctly -- Unit Seven: Using Apostrophes Correctly -- Unit Eight: Using Other Punctuation and Capitalizing Words -- Unit Nine: Writing Clear Sentences -- Unit Ten: ESL Choosing the Right Article -- Unit Eleven: ESL Using Verbs Correctly -- Unit Twelve: A Commonsense Writing Guide