| 摘要 | 第1-5页 |
| Abstract | 第5-10页 |
| Introduction | 第10-16页 |
| 1. Background of the Study | 第10-13页 |
| 2. Purpose of the Study | 第13-14页 |
| 3. Significance of the Study | 第14页 |
| 4. Organization of the Thesis | 第14-16页 |
| Chapter One Literature Review | 第16-29页 |
| ·Lexical Chunks | 第16-23页 |
| ·Defining Lexical Chunks | 第17-18页 |
| ·Working Definition of Lexical Chunks in Present Study | 第18-19页 |
| ·Categorization of Lexical Chunks | 第19-20页 |
| ·Functions of Lexical Chunks | 第20-21页 |
| ·Psychological Basis for Lexical Chunks | 第21-23页 |
| ·Previous Studies on Lexical Chunks Abroad and at Home | 第23-29页 |
| ·Previous Studies on Lexical Chunks Abroad | 第24-27页 |
| ·Previous Studies on Lexical Chunks at Home | 第27-29页 |
| Chapter Two Lexical Chunks and Language Teaching and Learning | 第29-36页 |
| ·Lexical Chunks and Language Learning | 第29-31页 |
| ·Lexical Chunks and Teenagers' First Language Acquisition | 第29-30页 |
| ·Lexical Chunks and Teenagers' Second Language Acquisition | 第30-31页 |
| ·Lexical Chunks and Language Teaching | 第31-36页 |
| ·The Lexical Approach | 第31-32页 |
| ·Historical Development of Lexical Approach | 第32-34页 |
| ·Key Principles of Lexical Approach | 第34-35页 |
| ·Criteria for Deciding Which Lexical Chunks to Teach | 第35-36页 |
| Chapter Three Research Design | 第36-43页 |
| ·Research Questions | 第36页 |
| ·Research Method | 第36-37页 |
| ·Participants and Teaching Material | 第37页 |
| ·Instruments | 第37-38页 |
| ·Hypothesis | 第38页 |
| ·Procedure of the Experiment | 第38-43页 |
| ·Pre-test and Data Collection | 第38-39页 |
| ·Teaching Activities in CG and EG | 第39-42页 |
| ·Post-test and Data Collection | 第42页 |
| ·Interview | 第42-43页 |
| Chapter Four Data Analysis and Discussion | 第43-56页 |
| ·Statistical Description and Analysis of Composition Scores | 第43-47页 |
| ·Statistical Description and Analysis of Lexical Chunks Used | 第47-49页 |
| ·Interview Data Analysis | 第49-53页 |
| ·English Study before the Experiment | 第50-51页 |
| ·Changes after the Experiment | 第51-52页 |
| ·Attitude towards the Lexical Approach | 第52-53页 |
| ·Discussion | 第53-56页 |
| Conclusions | 第56-61页 |
| Acknowledgements | 第61-62页 |
| Bibliography | 第62-67页 |
| Appendix | 第67-74页 |
| Appendix Ⅰ | 第67-70页 |
| Appendix Ⅱ | 第70-72页 |
| Appendix Ⅲ | 第72-74页 |
| Appendix Ⅳ | 第74页 |
