| 摘要 | 第1-6页 |
| Abstract | 第6-12页 |
| Chapter 1 Introduction | 第12-16页 |
| ·Background of the Study | 第12页 |
| ·Objectives of the Study | 第12-14页 |
| ·Significance of the Study | 第14-15页 |
| ·Structure of the Thesis | 第15-16页 |
| Chapter 2 Literature Review | 第16-26页 |
| ·Previous Studies of Business Letters | 第16-17页 |
| ·Overview of Appraisal Theory | 第17-26页 |
| ·Origin of Appraisal Theory | 第18页 |
| ·Framework of Appraisal Theory | 第18-23页 |
| ·Previous Studies of Appraisal Theory Abroad | 第23-24页 |
| ·Previous Studies of Appraisal Theory at Home | 第24-26页 |
| Chapter 3 Research Methodology | 第26-29页 |
| ·Research Questions | 第26页 |
| ·Data Resources and Data Collection | 第26-27页 |
| ·Instrument | 第27页 |
| ·Research Procedures | 第27-29页 |
| Chapter 4 Results and Discussion | 第29-55页 |
| ·Appraisal Distribution in BE Letters | 第29-32页 |
| ·Attitude Resources and Construction of W-R Interaction | 第32-36页 |
| ·Affect-- Persuasion by Sharing Emotions | 第33-35页 |
| ·Judgement-- Persuasion by Sharing Ethics | 第35页 |
| ·Appreciation-- Persuasion by Sharing Social Valuation | 第35-36页 |
| ·Engagement Resources and Construction of W-R Interaction | 第36-45页 |
| ·Dialogic Contraction | 第37-41页 |
| ·Dialogic Expansion | 第41-45页 |
| ·Graduation Resources and Construction of W-R Interaction | 第45-49页 |
| ·Force | 第46-48页 |
| ·Focus | 第48-49页 |
| ·Construction of W-R Interaction in Different Types of BE Letters | 第49-55页 |
| ·Appraisal Distribution in Different Types of BE Letters | 第49-50页 |
| ·Construction of W-R Interaction in Convivial and Collaborative BE Letters | 第50-51页 |
| ·Construction of W-R Interaction in Competitive BE Letters | 第51-52页 |
| ·Construction of W-R Interaction in Conflictive BE Letters | 第52-55页 |
| Conclusion | 第55-58页 |
| References | 第58-63页 |
| Appendix A | 第63-64页 |
| Appendix B | 第64-67页 |
| Acknowledgements | 第67页 |
