| Abstract in English | 第1-9页 |
| Abstract in Chinese | 第9-11页 |
| List of Tables | 第11-12页 |
| List of Abbreviations | 第12-13页 |
| Introduction | 第13-17页 |
| Chapter One Literature Review | 第17-41页 |
| ·Definitions of Lexical Chunks | 第17-19页 |
| ·Distinctions of Lexical Chunks,Collocations and Colligations | 第19-20页 |
| ·Classification of Lexical Chunks | 第20-24页 |
| ·Classification of Lexical Chunks in Terms of Structure | 第20-23页 |
| ·Classification of Lexical Chunks in Terms of Function | 第23-24页 |
| ·Lexical Chunks in Language Acquisition | 第24-33页 |
| ·Lexical Chunks in First Language Acquisition | 第25-26页 |
| ·Lexical Chunks in Second Language Acquisition(SLA) | 第26-27页 |
| ·The Role of Lexical Chunks in Language Acquisition | 第27-31页 |
| ·Supporting the Development of Syntactic Rules | 第27-29页 |
| ·Easing Language Processing | 第29-30页 |
| ·Facilitating Language Production | 第30-31页 |
| ·The Lexical Approach and Language Acquisition | 第31-33页 |
| ·Lexical Chunks in Written Discourse | 第33-39页 |
| ·General Situation of Lexical Chunks in Written Discourse | 第33-35页 |
| ·Application of Lexical Chunks in Writing Practice | 第35-36页 |
| ·The Relationship between Lexical Chunks and Writing Quality | 第36-39页 |
| ·Summary | 第39-41页 |
| Chapter Two Methodology | 第41-48页 |
| ·Research Questions | 第41页 |
| ·Participants | 第41-42页 |
| ·Instruments | 第42-45页 |
| ·Sources of Data | 第42页 |
| ·The Scoring Criteria of the Essays | 第42-45页 |
| ·Data Collection | 第45-46页 |
| ·Data Analysis | 第46-48页 |
| Chapter Three Results and Discussion | 第48-57页 |
| ·General Descriptive Data | 第48-54页 |
| ·Relationship between Grade and the Use of Lexical Chunks by Students of Different Grades | 第54-55页 |
| ·Correlation between the Use of Lexical Chunks and Writing Score | 第55-56页 |
| ·Summary | 第56-57页 |
| Conclusion | 第57-64页 |
| Bibliography | 第64-71页 |
| Appendix Ⅰ | 第71-73页 |
| Appendix Ⅱ | 第73-74页 |
| Acknowledgements | 第74-75页 |
| 学位论文评阅及答辩情况表 | 第75页 |
