| Acknowledgements | 第5-6页 |
| Abstract | 第6-7页 |
| 摘要 | 第8-16页 |
| Chapter One Introduction | 第16-22页 |
| 1.1 Research Background | 第16-18页 |
| 1.2 Research Aims and Significance | 第18-20页 |
| 1.3 Organization of the Thesis | 第20-22页 |
| Chapter Two Literature Review | 第22-42页 |
| 2.1 Grammatical Metaphor | 第22-30页 |
| 2.1.1 From Lexical Metaphor to Grammatical Metaphor | 第22-23页 |
| 2.1.2 GM Studies Abroad | 第23-28页 |
| 2.1.3 GM Studies in China | 第28-30页 |
| 2.2 The Variable of Mode | 第30-36页 |
| 2.2.1 Register Theory | 第30-32页 |
| 2.2.2 Characterizations of Mode | 第32-35页 |
| 2.2.3 Previous Studies on the Relationships between GM and Mode | 第35-36页 |
| 2.3 Contrastive Studies on GM in English and Chinese | 第36-38页 |
| 2.4 Previous Studies on Political Discourses | 第38-42页 |
| Chapter Three Theoretical Framework and Research Methodology | 第42-66页 |
| 3.1 Theoretical Grounds for GM | 第42-44页 |
| 3.1.1 Three Metafunctions in SFL | 第42-43页 |
| 3.1.2 Stratal Realignment between Semantics and Lexicogrammar | 第43-44页 |
| 3.2 Classification of GM in Halliday’s Model | 第44-52页 |
| 3.2.1 Ideational GM | 第45-48页 |
| 3.2.2 Interpersonal GM | 第48-52页 |
| 3.3 Classification of GM in Chinese | 第52-58页 |
| 3.3.1 Ideational GM in Chinese | 第53-55页 |
| 3.3.2 Interpersonal GM in Chinese | 第55-58页 |
| 3.4 Research Methodology | 第58-66页 |
| 3.4.1 Research Questions | 第58-59页 |
| 3.4.2 Collection and Processing of Language Materials | 第59-60页 |
| 3.4.3 Research Methods and Procedures | 第60-66页 |
| Chapter Four Analysis of English and Chinese Political Discourses | 第66-95页 |
| 4.1 Mode Differentiation in Various Text Types | 第66-74页 |
| 4.1.1 Mode Differed in Two Continua | 第66-68页 |
| 4.1.2 Mode Differed in Complexity | 第68-72页 |
| 4.1.3 Interpretation on Lexical Density and Grammatical Intricacy | 第72-74页 |
| 4.2 GM Deployment in English Political Discourses | 第74-80页 |
| 4.2.1 Identification of GM Instances in English Political Discourses | 第74-75页 |
| 4.2.2 Quantification of GM Instances in English Political Discourses | 第75-80页 |
| 4.3 GM Deployment in Chinese Political Discourses | 第80-85页 |
| 4.4 Comparison of GM Deployment in English and Chinese Political Discourses | 第85-95页 |
| Chapter Five Relationship between GM and Mode Differentiation | 第95-129页 |
| 5.1 Relationship between GM and Mode in English Political Discourses | 第95-108页 |
| 5.1.1 The Mapping Relations between Lexical Density and Ideational GMScales | 第96-99页 |
| 5.1.2 Functional Interpretations of GM-mode Relationships in English Texts | 第99-106页 |
| 5.1.3 Relationship between Interpersonal GM and Grammatical Intricacy | 第106-108页 |
| 5.2 Relationship between GM and Mode in Chinese Political Discourses | 第108-121页 |
| 5.2.1 The Mapping Relations between Lexical Density and Ideational GMScales | 第109-111页 |
| 5.2.2 Functional Interpretations of GM-mode Relationships in Chinese Texts | 第111-119页 |
| 5.2.3 Relationship between Interpersonal GM and Grammatical Intricacy .104 | 第119-121页 |
| 5.3 Comparison of GM-mode Relationships between English and Chinese PoliticalDiscourses | 第121-129页 |
| 5.3.1 Difference in GM’s Contributions to the Complexity between TwoLanguages | 第122-126页 |
| 5.3.2 Difference in GM’s Functions of Constructing Texts between TwoLanguages | 第126-129页 |
| Chapter Six Conclusion | 第129-135页 |
| 6.1 Summary of Major Findings | 第129-132页 |
| 6.2 Implications of the Study | 第132-133页 |
| 6.3 Limitations and Suggestions | 第133-135页 |
| Bibliography | 第135-141页 |
| Appendix Ⅰ Sources of Language Materials | 第141-144页 |
| Appendix Ⅱ Analysis of Language Materials | 第144-190页 |
| Appendix Ⅲ Statistical Results by SPSS | 第190-200页 |
