Preface / Introduction Part 1, Sentence Basics Unit 1 Introduction: Grammar Matters Unit 2 The ESL Student and the Native Speaker Unit 3 The Sentence Unit 4 Building Sentences Part 2, The 20 Most Common Sentence Errors Error 1 Sentence Fragments Error 2 Run-on Sentences Error 3 Lack of Subject-Agreement Error 4 Incorrect Verb Forms Error 5 Incorrect Forms of Do , Be , and Have Error 6 Passive Voice Error 7 Shift in Tense Error 8 Shift in Point of View Error 9 Unclear or Missing Referent Error 10 Lack of Pronoun Agreement and Sexism Error 11 Trouble with Using Adverbs and Adjectives in Comparisons and Superlatives Error 12 Dangling or Misplaced Modifiers Error 13 Omitted Commas, Part 1 Error 14 Omitted Commas, Part 2 Error 15 Apostrophe Problems Error 16 Trouble with Quotation Marks Error 17 Incorrect Capitalization, Part 1 Error 18 Incorrect Capitalization, Part 2 Error 19 Misspelled Words, Part 1 Error 20 Misspelled Words, Part 2.