| Acknowledgements | 第1-5页 |
| Abstract | 第5-7页 |
| 摘要 | 第7-12页 |
| List of Tables | 第12-13页 |
| List of Figures | 第13-14页 |
| List of Abbreviations | 第14-15页 |
| Chapter 1 Introduction | 第15-24页 |
| ·Background of the Research | 第15-19页 |
| ·Why blog news commentary (BNC)? | 第16-17页 |
| ·Why Systemic Functional Linguistics (SFL)? | 第17-18页 |
| ·Why Appraisal Theory (AT)? | 第18-19页 |
| ·Purpose of the Current Research | 第19-20页 |
| ·Research Methodology | 第20-23页 |
| ·Data Collection | 第20-21页 |
| ·Data Annotation | 第21-23页 |
| ·Organization of the Thesis | 第23-24页 |
| Chapter 2 Reviewing the Relevant Literature | 第24-32页 |
| ·Studies of Dialogic Features in Texts | 第24-26页 |
| ·Dialogic Studies in AT | 第26-30页 |
| ·Dialogic studies in AT abroad | 第26-28页 |
| ·Dialogic studies in AT at home | 第28-30页 |
| ·Blog Studies at Home and Abroad | 第30-32页 |
| Chapter 3 Constructing the Theoretical Framework | 第32-50页 |
| ·Positioning the study in SFL | 第32-40页 |
| ·Language as a social semiotic | 第32-33页 |
| ·Metafunctions | 第33-35页 |
| ·Context | 第35-36页 |
| ·BNC as a genre | 第36-40页 |
| ·Appraisal Theory:an Overview | 第40-50页 |
| ·Key elements of AT | 第40-42页 |
| ·Engagement as dialogic resources | 第42-50页 |
| ·Monogloss | 第43-44页 |
| ·Heterogloss:dialogic expansion and contraction | 第44-48页 |
| ·Heterogloss:extra-vocalisation and intra-vocalisation | 第48-50页 |
| Chapter 4 Construing the Dialogic Potential of BNC | 第50-92页 |
| ·General Survey of Dialogic Resources in BNC | 第50-63页 |
| ·Monogloss and Heterogloss in BNC | 第50-53页 |
| ·Heteroglossic Engagement in BNC | 第53-58页 |
| ·Dialogic Contraction and Expansion | 第53-56页 |
| ·Intra-vocalisation and Extra-vocalisation | 第56-58页 |
| ·Comparative studies:verifying the credibility of the results | 第58-63页 |
| ·Comparison of the dialogic resources between Chinese and English BNC | 第58-60页 |
| ·Comparison of dialogic resources between the target texts and the compare texts | 第60-63页 |
| ·Dialogic Flow in Each Phase of BNC | 第63-67页 |
| ·Frequency of Monogloss and Heterogloss in each phase of BNC | 第64-65页 |
| ·Frequency of Heteroglossic Engagement in each phase of BNC | 第65-67页 |
| ·Contraction vs. Expansion | 第65-66页 |
| ·Intra-vocalisation vs. Extra-vocalisation | 第66-67页 |
| ·Resources for Managing Dialogic Space in BNC | 第67-92页 |
| ·Dialogic resources in Title | 第67-71页 |
| ·Dialogic resources in News Event | 第71-75页 |
| ·Dialogic resources in Thesis | 第75-78页 |
| ·Dialogic resources in Arguments | 第78-89页 |
| ·Disclaim in the Arguments phase | 第78-81页 |
| ·Entertain in the Arguments phase | 第81-86页 |
| ·Attribute in the Arguments phase | 第86-89页 |
| ·Dialogic resources in Conclusion | 第89-92页 |
| Chapter 5 Conclusion | 第92-98页 |
| ·Major Findings | 第92-94页 |
| ·Implications | 第94-96页 |
| ·Limitations of the Research | 第96-97页 |
| ·Prospects for Further Research | 第97-98页 |
| Reference | 第98-104页 |
| Appendices | 第104-115页 |
| Published Works during MA Study | 第115页 |
