| 摘要 | 第1-7页 |
| ABSTRACT | 第7-11页 |
| Chapter One Introduction | 第11-16页 |
| ·Background of the Study | 第11-13页 |
| ·Significance of the Study | 第13-14页 |
| ·Methods of the Research | 第14页 |
| ·Structure of the Thesis | 第14-16页 |
| Chapter Two Literature Review | 第16-29页 |
| ·A Brief Review of Lexical Chunks | 第16-23页 |
| ·Definitions of Lexical Chunks | 第16-18页 |
| ·Classifications of Lexical Chunks | 第18-21页 |
| ·Functions of Lexical Chunks | 第21-23页 |
| ·Studies Abroad | 第23-25页 |
| ·Studies at Home | 第25-27页 |
| ·A Summary | 第27-29页 |
| Chapter Three Research Methodology | 第29-38页 |
| ·Research Questions | 第29页 |
| ·Subjects | 第29-30页 |
| ·Instruments | 第30-31页 |
| ·Procedures | 第31-33页 |
| ·Data Collection and Analysis | 第33-38页 |
| Chapter Four Results and Discussion | 第38-58页 |
| ·Tendencies of Overall Lexical Chunks Used across the Four Terms | 第38-51页 |
| ·Tendencies of Polywords Used across the Four Terms | 第40-42页 |
| ·Tendencies of Institutionalized Expressions Used across the Four Terms | 第42-45页 |
| ·Tendencies of Phrasal Constraints Used across the Four Terms | 第45-48页 |
| ·Tendencies of Sentence Builders Used across the Four Terms | 第48-51页 |
| ·Correlation between Lexical Chunks and the Quality of Compositions | 第51-55页 |
| ·Correlation between Polywords and the Quality of Compositions | 第52-53页 |
| ·Correlation between Institutionalized Expressions and the Quality of Compositions | 第53-54页 |
| ·Correlation between Phrasal Constraints and the Quality of Compositions | 第54-55页 |
| ·Correlation between Sentence Builders and the Quality of Compositions | 第55页 |
| ·A Summary | 第55-58页 |
| Chapter Five Conclusion | 第58-65页 |
| ·Major Findings of the Study | 第58-59页 |
| ·Pedagogical Implications of Lexical Chunks in English Writing | 第59-62页 |
| ·Limitations and Suggestions for Further Study | 第62-65页 |
| References | 第65-69页 |
| Appendix Ⅰ | 第69-70页 |
| Appendix Ⅱ | 第70-72页 |
| Appendix Ⅲ | 第72-74页 |
| Acknowledgements | 第74-75页 |
| Publications | 第75页 |
