| 摘要 | 第1-6页 |
| Abstract | 第6-7页 |
| Table of Contents | 第7-9页 |
| Chapter One Introduction | 第9-13页 |
| ·Background | 第9-11页 |
| ·Significance of the study | 第11-12页 |
| ·The structure of the thesis | 第12-13页 |
| Chapter Two Literature Review | 第13-34页 |
| ·Introduction | 第13页 |
| ·Overview of language from the Systemic Functional Perspective | 第13-14页 |
| ·Overview of Systemic Functional Perspective | 第14-15页 |
| ·Research on cohesion | 第15-16页 |
| ·Research on coherence | 第16-25页 |
| ·Definition of theme | 第16-18页 |
| ·Classification of theme | 第18-19页 |
| ·Definition of thematic progression patterns | 第19-23页 |
| ·Definition of related progressions | 第23-25页 |
| ·Overview of studies of TPP in writing | 第25-29页 |
| ·Objective coherence assessment by Coh-Metrix | 第29-31页 |
| ·Research gap | 第31-34页 |
| Chapter Three Research Methodology | 第34-42页 |
| ·Research questions of the present study | 第34页 |
| ·Research design | 第34页 |
| ·Data description | 第34-35页 |
| ·Writing sample genre | 第35-36页 |
| ·Writing samples assessment | 第36-37页 |
| ·Research procedures | 第37-42页 |
| Chapter Five Results and discussions | 第42-71页 |
| ·Descriptive results of writing samples | 第42-55页 |
| ·Correlation between writing quality scores and coherence scores | 第42-45页 |
| ·Correlation between writing quality and thematic progression patterns | 第45-53页 |
| ·Correlation between thematic progression patterns and seven measures of Coh-Metrix | 第53-55页 |
| ·Discussion | 第55-64页 |
| ·Correlation between writing quality and co herence scores | 第55-56页 |
| ·Correlation between writing quality and thematic pro gression patterns | 第56-61页 |
| ·Correlation between thematic progression patterns and seven measures of Coh-Metrix | 第61-64页 |
| ·Qualitative discussion of the co herence breaks in students' writing | 第64-71页 |
| Chapter Six Conclusion | 第71-73页 |
| ·Major findings | 第71-72页 |
| ·Future research suggestion | 第72页 |
| ·Pedagogical impliication | 第72-73页 |
| References | 第73-78页 |
| Appendix A | 第78-80页 |
| Appendix B(Bamberg,1984:317) | 第80-82页 |
| Appendix C | 第82-83页 |
| Acknowledgements | 第83页 |
