| Acknowledgements | 第1-5页 |
| Abstract | 第5-7页 |
| 摘要 | 第7-13页 |
| Chapter One Introduction | 第13-16页 |
| ·Research Background | 第13页 |
| ·Significance of the Present Study | 第13-14页 |
| ·Objectives of the Present Research | 第14-15页 |
| ·Organization of the Paper | 第15-16页 |
| Chapter Two Literature Review | 第16-36页 |
| ·Properties of DMs | 第16-21页 |
| ·Definition of DMS | 第16-19页 |
| ·Function of DMs | 第19-21页 |
| ·Classification of DMs | 第21-25页 |
| ·Classification Suggested by Blackmore | 第21-22页 |
| ·Fraser's Classification | 第22-24页 |
| ·Philps's Classification | 第24页 |
| ·Wang & Zhu's Classification | 第24-25页 |
| ·Theoretical Approach to DMs | 第25-32页 |
| ·Schiffrin's Coherence-theoretic Analysis of DMs | 第25-27页 |
| ·Rhetorical Relations and DMs | 第27-29页 |
| ·Performance Analysis | 第29-30页 |
| ·Coherency & Fluency as Indicators of Oral Performance | 第30-32页 |
| ·Recent Research on DMs in SLA | 第32-36页 |
| ·Research on Use of DMs by L2 Learners Abroad | 第32-34页 |
| ·Research on Use of DMs by L2 learners in China | 第34-36页 |
| Chapter Three Research Design and Data Collection | 第36-47页 |
| ·Research Questions | 第36页 |
| ·Methods | 第36-38页 |
| ·Corpus-based Approach | 第36-37页 |
| ·Contrastive Interlanguage Analysis | 第37-38页 |
| ·Corpus & the Retrieving Tool | 第38-43页 |
| ·Learner Corpus | 第38-41页 |
| ·Native Speaker Corpus | 第41页 |
| ·A Brief Introduction of the Retrieving Tool | 第41-43页 |
| ·Procedures and Data Collection | 第43-47页 |
| Chapter Four Results and Discussions | 第47-60页 |
| ·Differences in the Use of DMs between Chinese Students and Native Speakers | 第47-54页 |
| ·General Frequency | 第47-48页 |
| ·Characteristics of Using Logic Markers | 第48-52页 |
| ·Characteristics of Using Modal Markers | 第52-53页 |
| ·Characteristics of Using Vocal Hiccups & Fillers | 第53-54页 |
| ·Differences in the Use of DMs between HG & LG Students | 第54-57页 |
| ·Frequency and Typology | 第54-55页 |
| ·Detailed Comparison | 第55-57页 |
| ·Correlations Between DMs & Oral Performance | 第57-60页 |
| Chapter Five Conclusion | 第60-65页 |
| ·Major Findings | 第60-62页 |
| ·Implications | 第62-64页 |
| ·Limitations | 第64-65页 |
| References | 第65-69页 |
| Appendix | 第69-74页 |
| Published Papers During My Graduate Study | 第74页 |
