| 中文摘要 | 第5-7页 |
| Abstract | 第7-8页 |
| Chapter One Introduction | 第14-17页 |
| 1.1 Background of the Study | 第14-15页 |
| 1.2 Purpose and Significance of the Study | 第15-16页 |
| 1.3 Overall Structure of the Study | 第16-17页 |
| Chapter Two Literature Review | 第17-31页 |
| 2.1 Studies and Criteria for Material Evaluation | 第17-24页 |
| 2.1.1 Definition and Function of Textbooks | 第17-18页 |
| 2.1.2 Principles of Textbook Compilation | 第18-21页 |
| 2.1.3 The Compilation of College English Textbooks in China | 第21-24页 |
| 2.2 Vocabulary Teaching and Vocabulary Study | 第24-28页 |
| 2.2.1 Vocabulary Teaching and Memorization Strategies | 第24-27页 |
| 2.2.2 Vocabulary in College English Textbooks | 第27-28页 |
| 2.3 Recap of Researches on Repetition and Lexical Repetition | 第28-31页 |
| 2.3.1 Definition of Repetition and Lexical Repetition | 第28-29页 |
| 2.3.2 Studies on Repetition of New Words at Home and Abroad | 第29-31页 |
| Chapter Three Memory and Repetition | 第31-38页 |
| 3.1 Memory Theories | 第31-34页 |
| 3.1.1 Ebbinghaus's Research of Memory | 第31-33页 |
| 3.1.2 Atkinson-Shiffrin Model (Multi-Store Model) | 第33页 |
| 3.1.3 Spiral Structure and Liner Structure | 第33-34页 |
| 3.2 Repetition Theories | 第34-38页 |
| 3.2.1 The Importance of Repetition | 第34页 |
| 3.2.2 Timing, Frequency and Forms of Occurrence | 第34-38页 |
| 3.2.2.1 From the Perspective of Memory Theories | 第35页 |
| 3.2.2.2 From the Perspective of Lexicology | 第35-38页 |
| Chapter Four Methodology | 第38-43页 |
| 4.1 Research Questions | 第38页 |
| 4.2 Materials | 第38-42页 |
| 4.3 Data Collection and Analysis | 第42-43页 |
| Chapter Five Data Analysis and Discussion | 第43-78页 |
| 5.1 Frequency of Repetition of New Words in NHCH v2b1rs | 第43-68页 |
| 5.1.1 Repetition of New Words in the Current Units | 第44-58页 |
| 5.1.1.1 Repetition of new words in Section A | 第45-54页 |
| 5.1.1.1.1 In Text A | 第45-47页 |
| 5.1.1.1.2 In Exercise A | 第47-52页 |
| 5.1.1.1.3 In Previews and Pre-reading Activities | 第52-54页 |
| 5.1.1.2 Repetition of new words in Section B | 第54-58页 |
| 5.1.1.2.1 In Text B | 第54-56页 |
| 5.1.1.2.2 In Exercise B | 第56-58页 |
| 5.1.2 Repetition of New Words in the Following and Cross Units | 第58-67页 |
| 5.1.3 Repetition of New Words in Each Unit | 第67-68页 |
| 5.2 Range of Distribution of New Words | 第68-75页 |
| 5.3 Discussion | 第75-78页 |
| Chapter Six Conclusion | 第78-83页 |
| 6.1 Findings of This Research | 第78-80页 |
| 6.2 Suggestions of This Research | 第80-81页 |
| 6.3 Limitation and Development of This Research | 第81-83页 |
| Bibliography | 第83-89页 |
| Acknowledgements | 第89页 |
