| ACKNOWLEDGEMENTS | 第1-5页 |
| 摘要 | 第5-7页 |
| ABSTRACT | 第7-16页 |
| Chapter One INTRODUCTION | 第16-20页 |
| ·Research Background | 第16-18页 |
| ·The Significance of the Present Study | 第18-19页 |
| ·The Organization of the Thesis | 第19-20页 |
| Chapter Two LITERATURE REVIEW | 第20-40页 |
| ·Multimodality and Discourse Analysis | 第20-23页 |
| ·Mode and multimodality | 第20页 |
| ·Discourse and multimodal discourse | 第20-22页 |
| ·Multimodal discourse analysis | 第22-23页 |
| ·CDA and MCDA | 第23-33页 |
| ·CDA and its development | 第23-25页 |
| ·Definition of MCDA | 第25-26页 |
| ·The characteristics of MCDA | 第26-27页 |
| ·SFG and VG | 第27-30页 |
| ·Language and image | 第30-33页 |
| ·PSA and Institutional Discourse | 第33-37页 |
| ·PSA as a kind of multimodal discourse | 第34-36页 |
| ·PSA as a kind of institutional discourse | 第36-37页 |
| ·Summary | 第37-40页 |
| Chapter Three RESEARCH METHODOLOGY | 第40-50页 |
| ·Research Questions | 第40-41页 |
| ·A MCDA Model for PSA Analysis | 第41-45页 |
| ·Data and Data Collection | 第45-48页 |
| ·Self-complied corpus | 第45-46页 |
| ·Corpus methods and tools | 第46-48页 |
| ·Data Analysis | 第48-50页 |
| Chapter Four RESULTS AND DISCUSSION | 第50-82页 |
| ·The Features of the Language Mode in PSA | 第50-57页 |
| ·Lexical density and nominalization | 第50-52页 |
| ·Key words and the theme of PSA | 第52-54页 |
| ·Sentence patterns and mood in PSA | 第54-57页 |
| ·The Features of the Image Mode in PSA | 第57-71页 |
| ·Meaning created through contact | 第58-60页 |
| ·Meaning created through social distance | 第60-63页 |
| ·Meaning created through perspective | 第63-66页 |
| ·Meaning created through modality | 第66-71页 |
| ·The Combination of the Two Modes | 第71-79页 |
| ·Linguistic and visual metaphor | 第71-75页 |
| ·Linguistic and visual synecdoche | 第75-76页 |
| ·Linguistic and visual metonymy | 第76-77页 |
| ·Linguistic and visual irony | 第77-79页 |
| ·Summary | 第79-82页 |
| Chapter Five CONCLUSION | 第82-86页 |
| ·Major Findings | 第82-84页 |
| ·Implications of the Study | 第84-85页 |
| ·Limitations and Suggestions | 第85-86页 |
| REFERENCES | 第86-96页 |
| 附录：作者在攻读硕士学位期间发表的论文 | 第96页 |
