| Abstract | 第4-5页 |
| 中文摘要 | 第6-8页 |
| Abbreviations | 第8-11页 |
| 1. Introduction | 第11-15页 |
| 1.1 Research background | 第11-12页 |
| 1.2 Research purpose and significance | 第12-14页 |
| 1.3 Organization of the thesis | 第14-15页 |
| 2. Literature Review | 第15-27页 |
| 2.1 Previous studies on political discourse at home and abroad | 第15-18页 |
| 2.1.1 Previous studies on political discourse abroad | 第15-16页 |
| 2.1.2 Previous studies on political discourse at home | 第16-18页 |
| 2.2 Previous studies on pragmatic presupposition at home and abroad | 第18-23页 |
| 2.2.1 Previous studies on pragmatic presupposition abroad | 第18-19页 |
| 2.2.2 Previous studies on pragmatic presupposition at home | 第19-23页 |
| 2.3 Studies on pragmatic presupposition in political discourse | 第23-27页 |
| 2.3.1 Studies on pragmatic presupposition in political discourse abroad | 第23页 |
| 2.3.2 Studies on pragmatic presupposition in political discourse at home | 第23-27页 |
| 3. Theoretical Foundation | 第27-43页 |
| 3.1 Political discourse | 第27-30页 |
| 3.1.1 Definition of political discourse | 第27-28页 |
| 3.1.2 Characteristics of political discourse | 第28-29页 |
| 3.1.3 Political discourse and ideology | 第29-30页 |
| 3.2 Presupposition | 第30-43页 |
| 3.2.1 Introduction of presupposition | 第31-33页 |
| 3.2.2 Classifications of presupposition | 第33-37页 |
| 3.2.3 Functions of pragmatic presupposition | 第37-39页 |
| 3.2.4 Pragmatic presupposition triggers | 第39-43页 |
| 4. Data Analysis and Discussion | 第43-77页 |
| 4.1 Research design | 第43-45页 |
| 4.1.1 Research questions | 第43页 |
| 4.1.2 Data collection and treatment | 第43-45页 |
| 4.2 Explicit pragmatic presupposition in Tillerson’s political discourse | 第45-59页 |
| 4.2.1 The analysis on explicit pragmatic presupposition at lexical level | 第46-53页 |
| 4.2.2 The analysis on explicit pragmatic presupposition at syntactic level | 第53-59页 |
| 4.3 Implicit pragmatic presupposition in Tillerson’s political discourse | 第59-71页 |
| 4.3.1 The analysis on implicit pragmatic presupposition at lexical level | 第60-66页 |
| 4.3.2 The analysis on implicit pragmatic presupposition at syntactic level | 第66-71页 |
| 4.4 The functions of pragmatic prsupposition in Tillerson’s political discourse | 第71-73页 |
| 4.5 The purposes of pragmatic prsupposition in Tillerson’s political discourse | 第73-74页 |
| 4.6 Implications | 第74-77页 |
| 5. Conclusion | 第77-81页 |
| 5.1 Main findings | 第77-79页 |
| 5.2 Limitations of study | 第79页 |
| 5.3 Suggestions of further study | 第79-81页 |
| Bibliography | 第81-87页 |
| Appendix A | 第87-89页 |
| Appendix B | 第89-91页 |
| Appendix C | 第91-103页 |
| Acknowledgements | 第103-105页 |
| Publications | 第105页 |
