| ACKNOWLEDGEMENTS | 第6-7页 |
| ABSTRACT | 第7-8页 |
| 摘要 | 第9-15页 |
| CHAPTER Ⅰ.INTRODUCTION | 第15-21页 |
| 1.1 Research Background | 第15-17页 |
| 1.2 Research Purpose | 第17-18页 |
| 1.3 Research Significance | 第18-19页 |
| 1.4 Organization of the Research | 第19-21页 |
| CHAPTER Ⅱ.LITERATURE REVIEW | 第21-34页 |
| 2.1 Public Speeches and Business Public Speeches | 第21-22页 |
| 2.2 Introduction to TED Talks and TED Speeches | 第22-26页 |
| 2.2.1 Previous Researches on TED Speeches Overseas | 第22-24页 |
| 2.2.2 Previous Researches on TED Speeches Domestically | 第24-26页 |
| 2.3 Previous Researches on Presuppositions | 第26-32页 |
| 2.3.1 Previous Researches on Presuppositions Overseas | 第26-29页 |
| 2.3.2 The Study on Theory of Presuppositions Domestically | 第29-32页 |
| 2.4 Comments on Previous Researches | 第32-34页 |
| CHAPTER Ⅲ.THEORETICAL FRAMEWORK | 第34-40页 |
| 3.1 The Triggers Theory of Levinson | 第34-36页 |
| 3.2 Classification of Pragmatic Presuppositions of Zhi Yongbi | 第36-38页 |
| 3.2.1 Explicitly Pragmatic Presuppositions | 第36页 |
| 3.2.2 Implicitly Pragmatic Presuppositions | 第36-38页 |
| 3.3 Theoretical Framework in Present Research | 第38-40页 |
| CHAPTER Ⅳ.RESEARCH METHODOLOGY | 第40-44页 |
| 4.1 Research Questions | 第40页 |
| 4.2 Data Collection | 第40-41页 |
| 4.2.1 Criteria for Data | 第41页 |
| 4.2.2 Corpus Description | 第41页 |
| 4.3 Research Methods | 第41-42页 |
| 4.4 Research Instrument | 第42页 |
| 4.5 Research Procedures | 第42-44页 |
| CHAPTER Ⅴ.RESULTS AND DISCUSSIONS | 第44-83页 |
| 5.1 Explicitly Triggered Pragmatic Presuppositions | 第44-76页 |
| 5.1.1 Lexical Level | 第44-62页 |
| 5.1.2 Syntactical Level | 第62-76页 |
| 5.2 Implicitly Fictitious Pragmatic Presuppositions in TED Business Speeches | 第76-83页 |
| 5.2.1 The Implicitly Fictitious Pragmatic Presuppositions Based on theSpeaker’s Subjective Information | 第77-79页 |
| 5.2.2 The Implicitly Fictitious Pragmatic Presuppositions Based on theSubversion of Mutual Knowledge | 第79-81页 |
| 5.2.3 The Implicitly Fictitious Pragmatic Presuppositions Based on theSubversion of Appropriateness | 第81-82页 |
| 5.2.4 Summary | 第82-83页 |
| CHAPTER Ⅵ.CONCLUSION | 第83-87页 |
| 6.1 Major Findings | 第83-85页 |
| 6.2 Implications | 第85页 |
| 6.3 Limitations and Suggestions | 第85-87页 |
| WORKS CITED | 第87-92页 |
| APPENDIX: SOURCE OF TED BUSINESS SPEECHES | 第92-102页 |
