| Abstract | 第1-9页 |
| 摘要 | 第9-11页 |
| List of Tables | 第11-12页 |
| List of Abbreviations | 第12-13页 |
| Chapter One Introduction | 第13-18页 |
| ·Background of the Study | 第13-15页 |
| ·Significance of the Study | 第15-17页 |
| ·Structure of the Thesis | 第17-18页 |
| Chapter Two Literature Review | 第18-36页 |
| ·Lexical Approach | 第18页 |
| ·Definition of Lexical Chunks | 第18-21页 |
| ·Definitions of Lexical Chunks | 第19-20页 |
| ·Features of Lexical Chunks | 第20-21页 |
| ·Classification of Lexical Chunks | 第21-25页 |
| ·Classification of Lexical Chunks | 第21-24页 |
| ·Criteria for Classifying Lexical Chunks | 第24-25页 |
| ·Functions of Lexical Chunks | 第25-29页 |
| ·Facilitating Writing Fluency | 第25-27页 |
| ·Promoting Language Idiomaticity and Vividness | 第27-28页 |
| ·Fostering Text-organizing Ability | 第28-29页 |
| ·Roles of Lexical Chunks in Language Acquisition | 第29-32页 |
| ·Lexical Chunks in First Language Acquisition | 第29-30页 |
| ·Lexical Chunks in Second Language Acquisition | 第30-32页 |
| ·Lexical Chunks and Writing | 第32-36页 |
| ·Writing as Both Product and Process | 第32-34页 |
| ·The Importance of Using Lexical Chunks in Writing | 第34-36页 |
| Chapter Three Methodology | 第36-40页 |
| ·Research Questions | 第36-37页 |
| ·Subjects | 第37页 |
| ·Instruments | 第37-38页 |
| ·Procedure | 第38页 |
| ·Data Collection and Analysis | 第38-40页 |
| Chapter Four Results and Discussion | 第40-53页 |
| ·Results | 第40-47页 |
| ·Statistic Description of Lexical Chunks Used and Frequency of LexicalChunks Used in Two Different Groups | 第40-42页 |
| ·Within-group Comparison on Four Structural Categories of LexicalChunks | 第42-43页 |
| ·Between-group Comparison on Four Structural Types of Lexical Chunks | 第43-44页 |
| ·Results of the Independent T-test | 第44-46页 |
| ·Correlation between Lexical Chunks and Composition Score | 第46-47页 |
| ·Results of the Interviews | 第47-49页 |
| ·Discussion | 第49-53页 |
| Chapter Five Conclusion | 第53-63页 |
| ·The Significance of Mastering Lexical Chunks | 第53-55页 |
| ·Pedagogical Implications for EFL Vocabulary Teaching | 第55-60页 |
| ·Limitations | 第60-61页 |
| ·Suggestions for Further Study | 第61页 |
| ·Summary | 第61-63页 |
| Bibliography | 第63-68页 |
| Appendices | 第68-74页 |
| Appendix Ⅰ | 第68-70页 |
| Appendix Ⅱ | 第70-74页 |
| Acknowledgements | 第74-75页 |
| Publications | 第75-76页 |
| 学位论文评阅及答辩情况表 | 第76页 |
