| 摘要 | 第1-6页 |
| Abstract | 第6-11页 |
| Chapter 1 Introduction | 第11-14页 |
| ·Preview of the Research | 第11页 |
| ·Theoretical and Practical Significance | 第11-12页 |
| ·General orgnization of The Thesis | 第12-14页 |
| Chapter 2 Literature Review | 第14-29页 |
| ·Description of Chunk | 第14-17页 |
| ·Nature of Continuity | 第14-15页 |
| ·Degree of Abstraction | 第15-16页 |
| ·A Scale of Variability | 第16页 |
| ·Structure | 第16-17页 |
| ·Categorization of Chunks | 第17-19页 |
| ·Current Theoretical Findings about Chunks | 第19-24页 |
| ·Evidence from Corpus Linguistics | 第19-20页 |
| ·Psychological Reality of Chunks | 第20-22页 |
| ·Chunks in Second Language Acquisition | 第22-23页 |
| ·Chunks in Second Language Teaching Theories | 第23-24页 |
| ·Empirical Studies | 第24-27页 |
| ·Quantitative studies | 第24-26页 |
| ·Qualitative Studies | 第26-27页 |
| ·The Need for More Research | 第27-29页 |
| Chapter 3 Methodology | 第29-37页 |
| ·Research Questions | 第29-30页 |
| ·Written Materials | 第30-33页 |
| ·A Brief Introduction to CLEC | 第30页 |
| ·Materials in Each Part | 第30-33页 |
| ·Instruments | 第33页 |
| ·Data Collection | 第33-36页 |
| ·The Criterion for Chunk Identification | 第34页 |
| ·Procedures | 第34-36页 |
| ·Data Analysis | 第36-37页 |
| Chapter 4 Results and Discussion | 第37-62页 |
| ·Chunks Used by Students at Different English Learning Stages | 第37-50页 |
| ·General Analyses of Chunks Between and Within Groups | 第37-39页 |
| ·High Frequency Chunks in Sub-CLEC | 第39-46页 |
| ·High Frequency Chunks in BROWN | 第46-50页 |
| ·Chunks Functioning as Discourse Devices | 第50-53页 |
| ·Types and Total Number of Discourse Devices | 第51-52页 |
| ·Overuse and Misuse of Discourse Devices | 第52-53页 |
| ·Relationship Between Chunk Use and Writing Achievement | 第53-62页 |
| ·Correlation Analysis | 第53-56页 |
| ·Multiple Regression Analysis | 第56-62页 |
| Chapter 5 Conclusion | 第62-67页 |
| ·Summary of Major Findings | 第62-64页 |
| ·Features of Chunks Used by Students at Different English Learning Stages | 第62页 |
| ·Differences of the Use of Chunks as Discourse Devices Between High and Low Score Compositions | 第62-63页 |
| ·Relationship Between Chunk Use and English Writing Achievement | 第63-64页 |
| ·Implications | 第64-65页 |
| ·Limitations and Suggestions for Future Research | 第65-67页 |
| References | 第67-70页 |
| Appendices | 第70-75页 |
| Appendix Ⅰ | 第70-71页 |
| Appendix Ⅱ | 第71-73页 |
| Appendix Ⅲ | 第73-75页 |
| Publications | 第75-76页 |
| Acknowledgement | 第76-77页 |
| Resume | 第77页 |
