| ABSTRACT | 第1-7页 |
| 摘要 | 第7-8页 |
| ACKNOWLEDGEMENTS | 第8-9页 |
| LIST OF TABLES AND FIGURES | 第9-10页 |
| CONTENTS | 第10-12页 |
| CHAPTER ONE INTRODUCTION | 第12-16页 |
| ·An overview of the study | 第12-13页 |
| ·The significance of the study | 第13-14页 |
| ·The objectives of the study | 第14-15页 |
| ·Thesis structure | 第15-16页 |
| CHAPTER TWO LITERATURE REVIEW AND THEORETICAL FRAMEWORK | 第16-48页 |
| ·Literature review | 第16-29页 |
| ·Previous studies of speech discourses | 第16-21页 |
| ·A general introduction to speech discourses | 第16-18页 |
| ·Previous studies of speech abroad | 第18-19页 |
| ·Previous studies of speech at home | 第19-21页 |
| ·Previous studies of Positive Discourse Analysis | 第21-28页 |
| ·A general introduction to Positive Discourse Analysis | 第21-23页 |
| ·Previous studies of Positive Discourse Analysis abroad | 第23-25页 |
| ·Previous studies of Positive Discourse Analysis at home | 第25-28页 |
| ·Remaining problems | 第28-29页 |
| ·Theoretical foundations | 第29-48页 |
| ·A general introduction to Appraisal Theory | 第29-30页 |
| ·Key concepts and three subsystems of Appraisal Theory | 第30-48页 |
| ·Key concepts in Appraisal Theory | 第31-32页 |
| ·Attitude | 第32-43页 |
| ·Engagement | 第43-45页 |
| ·Graduation | 第45-48页 |
| CHAPTER THREE DATA AND RESEARCH METHODOLOGY | 第48-55页 |
| ·Data | 第48-52页 |
| ·Data collection | 第48-49页 |
| ·Data description | 第49-52页 |
| ·Research methodology | 第52-53页 |
| ·Research methods | 第52-53页 |
| ·Research instruments | 第53页 |
| ·Procedures of the study | 第53-55页 |
| CHAPTER FOUR RESULTS AND DISCUSSION | 第55-79页 |
| ·An overview of the Appraisal resources in SAU and SCU databases | 第55-57页 |
| ·The comparative analysis of the Appraisal resources in SAU and SCU from the perspective of PDA | 第57-73页 |
| ·The Attitude analysis in SAU and SCU | 第57-63页 |
| ·The Affect analysis in SAU and SCU | 第58-60页 |
| ·The Judgment analysis in SAU and SCU | 第60-61页 |
| ·The Appreciation analysis in SAU and SCU | 第61-63页 |
| ·The Engagement analysis in SAU and SCU | 第63-70页 |
| ·The Dialogic Expansion analysis in SAU and SCU | 第64-66页 |
| ·The Dialogic Contraction analysis in SAU and SCU | 第66-70页 |
| ·The Graduation analysis in SAU and SCU | 第70-73页 |
| ·The Force analysis in SAU and SCU | 第70-73页 |
| ·The Focus analysis in SAU and SCU | 第73页 |
| ·Further discussion | 第73-79页 |
| CHAPTER FIVE CONCLUSION | 第79-84页 |
| ·Major research findings | 第79-81页 |
| ·Implications of the study | 第81-82页 |
| ·Limitations of the present study | 第82页 |
| ·Suggestions for further research | 第82-84页 |
| REFERENCES | 第84-88页 |
| APPENDIXES | 第88-101页 |
