| Abstract | 第1-9页 |
| 摘要 | 第9-10页 |
| Chapter One Introduction | 第10-14页 |
| ·Research Background | 第10-11页 |
| ·Research Purpose and Significance | 第11-12页 |
| ·The Organization of the Research | 第12-14页 |
| Chapter Two Literature Review | 第14-26页 |
| ·The Study of Lexical Repetition | 第14-22页 |
| ·The Previous Study on Lexical Repetition | 第14页 |
| ·The Present Study on Lexical Repetition | 第14-22页 |
| ·Spoken Discourse Study on Lexical Repetition | 第14-15页 |
| ·Written Discourse Study on Lexical Repetition | 第15-22页 |
| ·Halliday&Hasan’s Lexical Cohesion | 第16-18页 |
| ·Hoey’s Lexical Repetition Patterns | 第18-22页 |
| ·Classifications of Lexical Repetition | 第18-20页 |
| ·Definition of Links, Bonds and Nets of Bonds | 第20页 |
| ·Central and Marginal Sentences | 第20-21页 |
| ·Topic-opening and Topic-closing Sentences | 第21页 |
| ·Further Study on Hoey’s Lexical Repetition Patterns | 第21-22页 |
| ·The Study of Abstracts | 第22-26页 |
| ·The Overall Structure of Abstracts | 第23-24页 |
| ·The Contrastive Study of Abstracts | 第24-26页 |
| Chapter Three Methodology | 第26-45页 |
| ·Research Questions | 第26-27页 |
| ·Corpora Establishment | 第27页 |
| ·Database Selection | 第27页 |
| ·Abstract Selection | 第27页 |
| ·Research Instruments | 第27-28页 |
| ·Research Procedures | 第28-29页 |
| ·Sample Analysis | 第29-45页 |
| ·Identification of Types of Lexical Repetition in Two Samples | 第29-38页 |
| ·Identification of Central and Marginal Sentences in Two Samples | 第38-41页 |
| ·Creation of Abridgements of Two Sample Abstracts | 第41-43页 |
| ·Analysis of Macrostructures of Two Samples as well as Thei Abridgements | 第43-45页 |
| Chapter Four Results and Discussion | 第45-56页 |
| ·Results and Discussion on Lexical Repetition Patterns in Both Corpora | 第45-52页 |
| ·Comparison of the Frequency of Each Type of Lexical Repetition | 第45-49页 |
| ·Statistical Analysis of Lexical Repetition Patterns in Two Corpora | 第49-51页 |
| ·Factors Contributing to the Similarities and Differences | 第51-52页 |
| ·Results and Discussion on Macrostructures in Both Corpora | 第52-56页 |
| ·Comparison of the Frequency of Moves | 第52-54页 |
| ·Lexical Repetition Patterns and the Macrostructure of English Abstracts | 第54-56页 |
| Chapter Five Conclusion | 第56-60页 |
| ·Major Findings | 第56-57页 |
| ·Implications on Writing of English Abstracts | 第57-58页 |
| ·Limitations of the Study | 第58-59页 |
| ·Suggestions for the Further Study | 第59-60页 |
| Bibliography | 第60-65页 |
| Appendix I | 第65-66页 |
| Appendix II | 第66-67页 |
| Appendix III | 第67-69页 |
| Appendix IV | 第69-72页 |
| Appendix V | 第72-73页 |
| Appendix VI | 第73-74页 |
| Publication | 第74-75页 |
| Acknowledgements | 第75页 |
