| Acknowledgements | 第1-7页 |
| Abstract | 第7-8页 |
| 摘要 | 第8-12页 |
| List of Tables | 第12-14页 |
| Chapter 1 Introduction | 第14-19页 |
| ·Background of the Study | 第14-16页 |
| ·Purpose and Significance of the Study | 第16-17页 |
| ·Overall Structure of the Thesis | 第17-19页 |
| Chapter 2 Literature Review | 第19-34页 |
| ·An Overview of Coherence Theory | 第19-23页 |
| ·The Development of Coherence Theory | 第19-21页 |
| ·Halliday and Hasan’s Approach to Coherence | 第21-22页 |
| ·Coherence in Writing | 第22-23页 |
| ·Studies of Discourse Markers | 第23-30页 |
| ·Definitions of Discourse Markers | 第23-25页 |
| ·Classifications of Discourse Markers | 第25-29页 |
| ·Different Types of Classifications | 第25-28页 |
| ·Classification Adopted in This Thesis | 第28-29页 |
| ·Features of Discourse Markers | 第29-30页 |
| ·Previous Studies on Discourse Markers | 第30-34页 |
| ·Previous Studies Aboard | 第31-32页 |
| ·Previous Studies in China | 第32-34页 |
| Chapter 3 Methodology | 第34-43页 |
| ·Research Questions | 第34页 |
| ·Source of Data | 第34-35页 |
| ·Students' Writings | 第34-35页 |
| ·Questionnaire | 第35页 |
| ·Data Processing | 第35-43页 |
| ·Identifications of Discourse Markers in Students' Writings | 第36-37页 |
| ·The Ordering of the Identified Discourse Markers by Frequency | 第37-43页 |
| Chapter 4 Results and Discussion | 第43-58页 |
| ·Different Use of Discourse Markers in the Writings | 第43-50页 |
| ·Frequencies of Discourse Markers in the Writings | 第43-44页 |
| ·Types of Discourse Markers in the Writings | 第44-50页 |
| ·T he Effects of the Use of Discourse Markers on the Writings | 第50-54页 |
| ·Types and Frequencies of Discourse Markers in Different Score Writing Pieces | 第50-52页 |
| ·Different Scores by Using Different Frequencies and Types of Discourse Markers | 第52-54页 |
| ·Results and discussion on the questionnaire | 第54-58页 |
| Chapter 5 Conclusion | 第58-63页 |
| ·Major Findings | 第58-59页 |
| ·Pedagogical Implications | 第59-61页 |
| ·Implications for Teaching | 第59-60页 |
| ·Implications for Learning | 第60-61页 |
| ·Limitations of the Present Study | 第61页 |
| ·Suggestions for Further Research | 第61-63页 |
| Reference | 第63-67页 |
| Appendix | 第67-68页 |
