| Acknowledgements | 第1-5页 |
| Abstract | 第5-7页 |
| 摘要 | 第7-10页 |
| Introduction | 第10-15页 |
| ·The general frame of this thesis | 第10-11页 |
| ·The source of the political discourse corpora and the methods adopted | 第11-14页 |
| ·Significance of the study | 第14-15页 |
| Chapter 1 Theoretical Foundation | 第15-24页 |
| ·The definition of political discourse and the scope of this study | 第15-16页 |
| ·Previous studies on metaphor | 第16-20页 |
| ·Approaches to metaphor | 第16-17页 |
| ·Conceptual metaphor and the mapping theory | 第17-18页 |
| ·Pragmatic perspective of metaphor | 第18-19页 |
| ·Metaphor and ideology | 第19-20页 |
| ·The previous research on metaphors in political discourses | 第20-23页 |
| ·Summary | 第23-24页 |
| Chapter 2 Major modes and strategies of conceptual metaphorical expressions employed in political discourses | 第24-49页 |
| ·Mechanization | 第25-28页 |
| ·Analogical attribution | 第28-31页 |
| ·De-politicization | 第31-36页 |
| ·Understatement and “down-playing”policy | 第36-40页 |
| ·Overstatement and exaggeration | 第40-43页 |
| ·Concretization and simplification | 第43-47页 |
| ·Satiric and Ironic expressions | 第47-48页 |
| ·Summary | 第48-49页 |
| Chapter 3 The functions of metaphor in political discourses | 第49-58页 |
| ·Revealing underlying ideology | 第49-50页 |
| ·Reframing political reality and ideological cognition; changing cognitive atmosphere | 第50-52页 |
| ·Provoking and persuading | 第52-53页 |
| ·Selecting and processing information | 第53-54页 |
| ·Evaluating, foreseeing and directing action | 第54-55页 |
| ·The negative influence of political metaphors upon genuine grasping of facts | 第55-57页 |
| ·Summary | 第57-58页 |
| Chapter 4 A contrastive analysis of metaphor in political discourses and scientific discourses | 第58-64页 |
| ·Metaphors in scientific discourses | 第58-59页 |
| ·Functions of metaphor in scientific discourses | 第58-59页 |
| ·Features of metaphor in scientific discourses | 第59页 |
| ·Difference of metaphors between political discourses and scientific discourses | 第59-63页 |
| ·Summary | 第63-64页 |
| Conclusion | 第64-66页 |
| Bibliography | 第66-69页 |
| Internet Source | 第69-71页 |
| AppendixⅠ | 第71-72页 |
| AppendixⅡ | 第72-73页 |
| AppendixⅢ | 第73-80页 |
