About this About the TOEFL Diagnostic test Unit 1 nouns Unit 2 Verbs Unit 3 Infinitives and Gerunds Quiz 1Units 1–3 Unit 4 Clauses and sentences Unit 5 Conjunctions Unit 6 Adverb Clauses Quiz 2Units 4–6 Unit 7 Adjective Clauses Unit 8 noun Clauses Unit 9 Conditional sentences Quiz 3Units 7–9 Unit 10 singular and Plural Unit 11 Articles Unit 12 subject–Verb Agreement Unit 13 Pronoun Agreement Quiz 4Units 10–13 Unit 14 Comparison Unit 15 Prepositions Unit 16 Word order Unit 17 Parallel structure Quiz 5Units 14–17 Unit 18 Word Form Unit 19 Common Word errors Unit 20 Punctuation Quiz 6Units 18–20 Review test Answer Key Audio scripts Index How to score speaking How to score Writing score Charts
