| 摘要 | 第1-5页 |
| ABSTRACT | 第5-9页 |
| 1 Introduction | 第9-16页 |
| ·Research Background | 第9-12页 |
| ·Research Purpose and Significance | 第12-13页 |
| ·Data Collection and Processing | 第13-14页 |
| ·Organization of the Thesis | 第14-16页 |
| 2 Presupposition and Presupposition Triggers | 第16-30页 |
| ·Presupposition | 第16-21页 |
| ·Definition of Presupposition | 第17-18页 |
| ·Logical (Semantic) Notion of Presupposition | 第18-19页 |
| ·Pragmatic Notion of Presupposition | 第19-21页 |
| ·Presupposition Triggers | 第21-28页 |
| ·Verschueren's Account of Presupposition Triggers | 第21-23页 |
| ·Levinson's Account of Presupposition Triggers | 第23-24页 |
| ·Yule's Classification of Potential Presupposition Indicators | 第24-25页 |
| ·He Ziran's Classification of Presupposition Triggers | 第25-26页 |
| ·Other Researches on Presupposition Triggers | 第26-28页 |
| ·Framework of the Study: A Three-level Model | 第28-30页 |
| 3 Lexical PTs and Their Functions in APIs | 第30-49页 |
| ·Verbs as PTs and Their Functions | 第30-39页 |
| ·Frequency of Verbs in APIs | 第30-31页 |
| ·Implicative Verbs | 第31-33页 |
| ·Factive Verbs | 第33-36页 |
| ·Change-of-State Verbs | 第36-38页 |
| ·Iterative Verbs | 第38-39页 |
| ·Restrictive Words as PTs and Their Functions | 第39-42页 |
| ·Iterative Particles as PTs and Their Functions | 第42-44页 |
| ·Manner Adverbs as PTs and Their Functions | 第44-46页 |
| ·Other Particles as PTs and Their Functions | 第46-49页 |
| 4 Syntactic PTs and Their Functions in APIs | 第49-66页 |
| ·Frequency of Syntactic Presupposition Triggers in APIs | 第49-50页 |
| ·Temporal Clauses as PTs and Their Functions | 第50-52页 |
| ·Cleft Sentences as PTs and Their Functions | 第52-55页 |
| ·Comparative Structures as PTs and Their Functions | 第55-57页 |
| ·Non-restrictive Clauses as PTs and Their Functions | 第57-60页 |
| ·Counterfactual Conditionals as PTs and Functions | 第60-62页 |
| ·Questions as PTs and Their Functions | 第62-66页 |
| 5 Presupposition Triggers at Phonological Level: Bush's Second Inaugural as a Case Study | 第66-71页 |
| ·Stressed Constituents in Bush's Second Inaugural | 第67-69页 |
| ·Functions of the Stressed Constituents in Bush's Second Inaugural | 第69-71页 |
| 6 Conclusion | 第71-76页 |
| ·Major Findings of the Research | 第71-75页 |
| ·Suggestions for Further Study | 第75-76页 |
| Acknowledgements | 第76-77页 |
| Bibliography | 第77-82页 |
| Appendix Ⅰ | 第82-84页 |
| Appendix Ⅱ | 第84-90页 |
| Articles Published | 第90页 |
