| 摘要 | 第1-5页 |
| ABSTRACT | 第5-10页 |
| List of Tables | 第10-11页 |
| List of Abbreviations | 第11-12页 |
| Chapter One Introduction | 第12-15页 |
| ·Objectives of the Study | 第13-14页 |
| ·Framework of the Thesis | 第14-15页 |
| Chapter Two Literature Review | 第15-36页 |
| ·Terminology Distinction | 第15-17页 |
| ·General History of Studies on Discourse Markers (DMs) | 第17-29页 |
| ·Coherence-based approach to DMs | 第17-21页 |
| ·Grammatical-pragmatic approach to DMs | 第21-24页 |
| ·Cognitive -pragmatic approach to DMs | 第24-27页 |
| ·Research on DMs in China | 第27-29页 |
| ·Previous Studies on I mean as a Discourse Marker | 第29-32页 |
| ·A Sketch of Corpus Research | 第32-36页 |
| ·Corpus-based Linguistic Analysis | 第33-34页 |
| ·Corpus-based Study on DMs | 第34-36页 |
| Chapter Three Research Methodology | 第36-41页 |
| ·Research Questions | 第36页 |
| ·Corpora Description | 第36-37页 |
| ·Learner Corpus | 第37页 |
| ·Native Speaker Corpus | 第37页 |
| ·Instruments Description | 第37-38页 |
| ·Research procedure | 第38-41页 |
| ·Retrieving and Identifying I mean from Corpora | 第39-40页 |
| ·Examining Syntactic Positions and Pragmatic Functions | 第40-41页 |
| Chapter Four Data Analysis and Discussion | 第41-61页 |
| ·I mean Used in Learner Corpus | 第41-50页 |
| ·Overall Frequencies | 第41-42页 |
| ·Turn Positions | 第42-43页 |
| ·Pragmatic Functions | 第43-50页 |
| ·I mean functions as a marker of self-repair | 第44-45页 |
| ·I mean functions as a marker of supplementary and explanation | 第45-46页 |
| ·I mean functions as a marker of emphasis | 第46-47页 |
| ·I mean functions as a filler | 第47-48页 |
| ·I mean functions as a face-threat mitigator | 第48-50页 |
| ·Comparisons of the Usage of I mean Between Chinese English Majors and English Native Speaker | 第50-54页 |
| ·Comparison of Frequencies | 第51-52页 |
| ·Comparison of Turn Positions | 第52-53页 |
| ·Comparison of Pragmatic Functions | 第53-54页 |
| ·Patterns of I mean Used by Chinese English Majors | 第54-55页 |
| ·Possible Factors Contributing to the Different Uses of I mean | 第55-61页 |
| ·Pragmatic Transfer | 第55-58页 |
| ·Pragmatic Fossilization | 第58-59页 |
| ·The Instruction on DMs | 第59-61页 |
| Chapter Five Conclusion | 第61-66页 |
| ·Major Findings of the Current Study | 第61-63页 |
| ·Pedagogical Implications | 第63-64页 |
| ·Limitations | 第64-65页 |
| ·Suggestions for Further Research | 第65-66页 |
| References | 第66-70页 |
| Appendices | 第70-82页 |
| Acknowledgements | 第82-83页 |
| 攻读学位期间发表的学术论文目录 | 第83-84页 |
