| Acknowledgements | 第1-7页 |
| Abstract | 第7-9页 |
| 内容摘要 | 第9-11页 |
| Chapter One Introduction | 第11-17页 |
| ·Rationale of the Study | 第11-13页 |
| ·Objective of the Study | 第13页 |
| ·Data and Methodology of the Study | 第13-15页 |
| ·Source of Data | 第13-14页 |
| ·Methodology of the Study | 第14-15页 |
| ·Layout of the Thesis | 第15-17页 |
| Chapter Two Literature Review | 第17-24页 |
| ·Previous Studies on Critical Discourse Analysis | 第17-21页 |
| ·Pioneers of Critical Discourse Analysis and Their Studies Abroad | 第17-20页 |
| ·Pioneers of Critical Discourse Analysis and Their Studies at Home | 第20-21页 |
| ·Previous Studies on Polylogue | 第21-24页 |
| Chapter Three Theoretical Framework | 第24-34页 |
| ·Critical Discourse Analysis | 第24-25页 |
| ·Contents of CDA:Language,Power,Ideology and Their Relations | 第25-31页 |
| ·Language | 第25-26页 |
| ·Power | 第26-28页 |
| ·Ideology | 第28-29页 |
| ·Relations Between Language,Power and Ideology | 第29-31页 |
| ·The Model of Conversation Analysis | 第31-34页 |
| ·Turn-taking | 第31-32页 |
| ·Topic Control | 第32-34页 |
| Chapter Four Analyzing Polylogue from the Perspective of CDA | 第34-57页 |
| ·Discursive Structure of Polylogue | 第34-38页 |
| ·Linguistic Features of Polylogue | 第38-54页 |
| ·Topic Control with Respect to the More Powerful | 第38-47页 |
| ·Raising,Shifting and Closing of the Topics by the More Powerful | 第39-42页 |
| ·Interruption by the More Powerful | 第42-47页 |
| ·Turn-taking in Polylogue | 第47-54页 |
| ·Speaker Selection in Polylogue | 第48-49页 |
| ·Interruption by the Less Powerful | 第49-52页 |
| ·Silence in Polylogue | 第52-54页 |
| ·Ideology in Polylogue | 第54-57页 |
| Chapter Five Conclusion | 第57-60页 |
| ·Summary of the Findings | 第57-58页 |
| ·Implications of the Study | 第58页 |
| ·Limitations and Prospects for Future Research | 第58-60页 |
| References | 第60-63页 |
| Appendix | 第63-75页 |
