| Acknowledgements | 第5-6页 |
| Abstract (in English) | 第6-7页 |
| Abstract (in Chinese) | 第8-11页 |
| Chapter One Introduction | 第11-15页 |
| 1.1 Research Background | 第11-13页 |
| 1.2 Research Purpose and Significance | 第13页 |
| 1.3 Research Questions | 第13-14页 |
| 1.4 Organization of the Thesis | 第14-15页 |
| Chapter Two Literature Review | 第15-35页 |
| 2.1 Definitions of Lexical Chunks | 第15-19页 |
| 2.2 Classifications of Lexical Chunks | 第19-24页 |
| 2.3 Functions of Lexical Chunks | 第24-26页 |
| 2.4 Related Studies of Lexical Chunks | 第26-35页 |
| 2.4.1 Related Studies Abroad | 第27-29页 |
| 2.4.2 Related Studies at Home | 第29-35页 |
| Chapter Three Theoretical Orientation | 第35-41页 |
| 3.1 Chunking Theory | 第35-37页 |
| 3.2 Schema Theory | 第37-41页 |
| Chapter Four Research Methodology | 第41-53页 |
| 4.1 Research Method | 第41页 |
| 4.2 Research Subjects | 第41-43页 |
| 4.3 Data Collection | 第43-52页 |
| 4.4 Data Analysis | 第52-53页 |
| Chapter Five Results and Discussion | 第53-69页 |
| 5.1 Descriptive Analysis of Chunk Use | 第53-61页 |
| 5.1.1 General Situation of Chunk Use | 第53-57页 |
| 5.1.2 Comparison of Chunk Use Between High-score Group and Low-score Group | 第57-61页 |
| 5.2 Correlation Analysis Between Chunk Use and English Achievements | 第61-69页 |
| 5.2.1 Correlation Between Chunk Use and Scores of Comprehensive English Course | 第62-64页 |
| 5.2.2 Correlation Between Chunk Use and Scores of TEM 4 | 第64-69页 |
| Chapter Six Conclusion | 第69-73页 |
| 6.1 Main Findings | 第69-70页 |
| 6.2 Pedagogical Implications | 第70-71页 |
| 6.3 Limitations | 第71-73页 |
| Bibliography | 第73-80页 |
