| Acknowledgements | 第1-9页 |
| Abstract | 第9-11页 |
| 内容摘要 | 第11-13页 |
| Chapter One Introduction | 第13-17页 |
| ·Background of the study | 第13-14页 |
| ·Significance of the study | 第14-15页 |
| ·Organization of the thesis | 第15-17页 |
| Chapter Two Literature Review | 第17-32页 |
| ·Previous studies on GM | 第17-24页 |
| ·Halliday's initial treatment of GM | 第17-20页 |
| ·Other foreign linguistics'studies on GM following Halliday | 第20-22页 |
| ·Some Chinese linguistics'study on GM | 第22-24页 |
| ·Comments on the studies on GM | 第24页 |
| ·Previous studies on EST discourses | 第24-31页 |
| ·The defining of EST discourse | 第24-25页 |
| ·General features of EST discourse | 第25-27页 |
| ·Precious studies on EST discourse abroad and at home | 第27-31页 |
| ·Relationship between GM and EST | 第31-32页 |
| Chapter Three Theoretical Preliminaries | 第32-41页 |
| ·Halliday's redefinition of grammatical metaphor | 第33-34页 |
| ·Tanscategrization and rank shift | 第34-35页 |
| ·Reclassification of grammatical metaphor | 第35-39页 |
| ·Types of grammatical metaphors | 第35-37页 |
| ·The significance of reclassification | 第37-39页 |
| ·Syndrome of grammatical metaphor | 第39页 |
| ·Summary | 第39-41页 |
| Chapter Four Research Questions and Methodology | 第41-52页 |
| ·Research questions | 第41-42页 |
| ·Research methods | 第42页 |
| ·Data collection and research precedure | 第42-43页 |
| ·Identification of GM in the present data | 第43-52页 |
| Chapter Five Results and Discussion | 第52-71页 |
| ·A statistical analysis of the distribution of thirteen types of grammatical metaphors in EST discourses | 第52-55页 |
| ·The most commonly used form in EST discourses | 第55-56页 |
| ·The characteristics of grammatical metaphor in EST discourses | 第56-60页 |
| ·Metafunctional effect of grammatical metaphor in EST discourse | 第60-66页 |
| ·Ideational effect of grammatical metaphor | 第60-62页 |
| ·Interpersonal effect of grammatical metaphor in EST discourses | 第62-64页 |
| ·Textual effect of grammatical metaphor in EST discourses | 第64-66页 |
| ·Stylistic effect of grammatical metaphor in scientific EST discourses | 第66-71页 |
| ·Syntactic ambiguity | 第66-67页 |
| ·Complexity | 第67-69页 |
| ·Highly compact grammatical structure | 第67-69页 |
| ·Lexical density | 第69页 |
| ·Unpacking metaphorical texts | 第69-71页 |
| Chapter Six Conclusion | 第71-75页 |
| ·Findings of the study | 第71-72页 |
| ·Implications of the present study | 第72-74页 |
| ·Limitations of the study and suggestions for further study | 第74-75页 |
| References | 第75-77页 |
