| Acknowledgements | 第4-5页 |
| Abstract | 第5页 |
| 摘要 | 第6-10页 |
| Chapter One Introduction | 第10-14页 |
| 1.1 Research Background of the study | 第10-11页 |
| 1.2 Purpose of the study | 第11-12页 |
| 1.3 Significance of the study | 第12页 |
| 1.4 Structure of the study | 第12-14页 |
| Chapter Two Literature Review | 第14-30页 |
| 2.1 Definitions of grammatical metaphor (GM) | 第14-19页 |
| 2.1.1 GM as a metaphorical realization of a given semantic configuration | 第14-15页 |
| 2.1.2 GM as a non-typical mapping between semantic and grammatical categories | 第15-18页 |
| 2.1.3 GM as a cross-coupling between form and meaning | 第18页 |
| 2.1.4 GM as an alternative lexical realization of a meaning | 第18-19页 |
| 2.2 IGM | 第19-21页 |
| 2.3 Classification of IGM | 第21-24页 |
| 2.3.1 Classification of IGM by Halliday | 第21-23页 |
| 2.3.2 Classification of IGM by Martin | 第23页 |
| 2.3.3 Classification of IGM in recent studies | 第23-24页 |
| 2.4 GM and EST discourse | 第24-25页 |
| 2.4.1 GM and EST discourse by Halliday and Martin | 第24-25页 |
| 2.4.2 GM and EST discourse in recent studies | 第25页 |
| 2.5 Critics on previous studies on GM | 第25-28页 |
| 2.5.1 Critics on definition of GM | 第26页 |
| 2.5.2 Refined classification of IGM | 第26-27页 |
| 2.5.3 Critics on research methodology of studies on GM | 第27-28页 |
| 2.5.4 Critics on GM and style | 第28页 |
| 2.6 Summary | 第28-30页 |
| Chapter Three Research Methodology | 第30-40页 |
| 3.1 Explanation of the research design | 第30页 |
| 3.2 Research subjects | 第30-31页 |
| 3.3 Research questions | 第31页 |
| 3.4 Research instruments for quantitative design | 第31-32页 |
| 3.4.1 Adobe Reader 11.7.1 | 第31-32页 |
| 3.4.2 Matlab2010Ra | 第32页 |
| 3.5 Research basis for qualitative design | 第32-34页 |
| 3.5.1 Abduction | 第32-33页 |
| 3.5.2 Inductive reasoning | 第33-34页 |
| 3.6 Research procedures | 第34-37页 |
| 3.6.1 Research code | 第34-35页 |
| 3.6.2 Data collection | 第35-36页 |
| 3.6.3 Quantitative analysis | 第36页 |
| 3.6.4 Qualititive analysis | 第36-37页 |
| 3.7 Summary | 第37-40页 |
| Chapter Four IGM Features in EST Discourse | 第40-60页 |
| 4.1 Distribution of IGM in EST discourse | 第40-48页 |
| 4.1.1 Overall distribution of IGM | 第40-43页 |
| 4.1.2 Comparison of IGM distribution on different topics | 第43-45页 |
| 4.1.3 Comparison of IGM distribution by native speakers (NS) and non-native speakers(NNS) | 第45-48页 |
| 4.2 Distribution of nominalization GM in EST discourse | 第48-53页 |
| 4.2.1 Overall distribution of nominalization GM | 第48-50页 |
| 4.2.2 Comparison of nominalization GM distribution on different topics | 第50-52页 |
| 4.2.3 Comparison of nominalization GM distribution by NS and NNS | 第52-53页 |
| 4.3 Distribution of adjectivalization GM in EST discourse | 第53-59页 |
| 4.3.1 Overall distribution of adjectivalization GM | 第53-55页 |
| 4.3.2 Comparison of adjectivalization GM distribution on different topics | 第55-57页 |
| 4.3.3 Comparison of adjectivalization GM distribution by NS and NNS | 第57-59页 |
| 4.4 Summary | 第59-60页 |
| Chapter Five Explanations of the IGM Features | 第60-80页 |
| 5.1 Explanations of the IGM features from the cognitive perspective | 第60-64页 |
| 5.1.1 Cognitive mechanism of nominalization GM | 第60-62页 |
| 5.1.2 EST discourse and cognitive mechanism of nominalization GM | 第62-64页 |
| 5.2 Explanations of the IGM features from the semantic perspective | 第64-74页 |
| 5.2.1 Semantic differences between congruent form and metaphorical form | 第64-72页 |
| 5.2.1.1 The semantic differences from the systemic-functional perspective | 第64-66页 |
| 5.2.1.2 The semantic differences from the cognitive perspective | 第66-72页 |
| 5.2.2 EST discourse and the semantic differences | 第72-74页 |
| 5.3 Explanation of the IGM features from the perspective of text linguistics | 第74-78页 |
| 5.3.1 Theme and coherence | 第74-76页 |
| 5.3.2 GM,theme and coherence in EST discourse | 第76-78页 |
| 5.4 Summary | 第78-80页 |
| Chapter Six Conclusions | 第80-84页 |
| 6.1 Findings of the study | 第80-81页 |
| 6.2 Implications o1f the study | 第81-83页 |
| 6.3 Limitations of the study and suggestions for future research | 第83-84页 |
| References | 第84-88页 |
| Appendices | 第88-94页 |
| Appendix 1 List of figures | 第88-89页 |
| Appendix 2 List of tables | 第89-90页 |
| Appendix 3 Specific information about the articles as research subjects | 第90-93页 |
| Appendix 4 Publications | 第93-94页 |
