| 摘要 | 第1-6页 |
| Abstract | 第6-8页 |
| List of Abbreviations | 第8-13页 |
| Chapter One Introduction | 第13-17页 |
| ·Background of the Study | 第13-14页 |
| ·Significance of the Study | 第14-15页 |
| ·Purpose of the Study | 第15页 |
| ·Organization of the Study | 第15-17页 |
| Chapter Two Literature Review | 第17-33页 |
| ·Definition of Lexical Bundles | 第17-19页 |
| ·Classifications of Lexical Bundles | 第19-26页 |
| ·Structural Classifications of Lexical Bundles | 第19-22页 |
| ·Functional Classifications of Lexical Bundles | 第22-26页 |
| ·Previous Relevant Studies of Lexical Bundles | 第26-33页 |
| ·Relevant Studies on Lexical Bundles Abroad | 第26-29页 |
| ·Relevant Studies on Lexical Bundles at Home | 第29-33页 |
| Chapter Three Theoretical Framework | 第33-38页 |
| ·The Criteria to Identify Lexical Bundles | 第33页 |
| ·The Criteria to Classify Lexical Bundles | 第33-37页 |
| ·Corpus-based Approach | 第37-38页 |
| Chapter Four Research Methodology | 第38-42页 |
| ·Research Questions | 第38页 |
| ·Corpora in the Present Study | 第38-39页 |
| ·General Introduction to the Two Corpora | 第38-39页 |
| ·The Reliability of the Two Corpora | 第39页 |
| ·Research Instruments | 第39页 |
| ·Research Procedures | 第39-42页 |
| Chapter Five Results and Discussions | 第42-61页 |
| ·Four-word Lexical Bundles in the Two Corpora | 第42-45页 |
| ·Structural Analysis of Four-word Lexical Bundles in the Two Corpora | 第45-52页 |
| ·Structural Analysis of Four-word Lexical Bundles in CPC | 第45-47页 |
| ·Structural Analysis of Four-word Lexical Bundles in NPC | 第47-50页 |
| ·Structural Comparison of Four-word Lexical Bundles between Two Corpora | 第50-52页 |
| ·Functional Analysis of Four-word Lexical Bundles in the Two Corpora | 第52-61页 |
| ·Functional Analysis of Four-word Lexical Bundles in CPC | 第53-55页 |
| ·Functional Analysis of Four-word Lexical Bundles in NPC | 第55-57页 |
| ·Functional Comparison of Four-word Lexical Bundles between Two Corpora | 第57-61页 |
| Chapter Six Conclusion | 第61-64页 |
| ·Findings of the Present Study | 第61-62页 |
| ·Pedagogical Implications | 第62-63页 |
| ·Implications for Chinese Postgraduates’ Academic Writing | 第62页 |
| ·Implications for English Teaching and Learning of Lexical Bundles | 第62-63页 |
| ·Limitations and Suggestions | 第63-64页 |
| Acknowledgements | 第64-65页 |
| References | 第65-68页 |
| Appendix Ⅰ Four-word Lexical Bundles in CPC | 第68-71页 |
| Appendix Ⅱ Four-word Lexical Bundles in NPC | 第71-73页 |
| Academic Achievements | 第73页 |
