| English Abstract | 第1-5页 |
| Chinese Abstract | 第5-7页 |
| Chapter One Introduction | 第7-9页 |
| Chapter Two Theoretical Background | 第9-30页 |
| ·Interpersonal meaning within Systematic Functional Linguistics | 第9-10页 |
| ·Martin’s Appraisal Theory | 第10-14页 |
| ·Attitude | 第12页 |
| ·Engagement | 第12-13页 |
| ·Graduation | 第13-14页 |
| ·Engagement System | 第14-26页 |
| ·Monogloss vs. Heterogloss | 第16-17页 |
| ·Heterogloss | 第17-26页 |
| ·Dialogic Contractions vs. Dialogic Expansion | 第17-22页 |
| ·Extra-vocalization vs. Intra-vocalization | 第22-26页 |
| ·News Comments as a Genre | 第26-30页 |
| ·White’s Definition of News Comments | 第26页 |
| ·Structure of News Comments | 第26页 |
| ·Function and Significance of News Comments | 第26-27页 |
| ·Register and genre of the News Comments | 第27-28页 |
| ·Application of Appraisal in Discourse Analysis | 第28-30页 |
| Chapter Three Research Design | 第30-33页 |
| ·Purpose and Research Questions | 第30页 |
| ·Data Collection | 第30-31页 |
| ·Research Findings | 第31-33页 |
| Chapter Four Data Analysis of Engagement Resources in News Comments | 第33-43页 |
| ·Common Features of Engagement Resources in News Comments | 第33-39页 |
| ·Dialogic Contraction and Intra-vocalization | 第33-37页 |
| ·Dialogic Expansion and Extra-vocalization | 第37-39页 |
| ·Interpersonal Functions of the Engagement Resources in the News Comments | 第39-43页 |
| ·Expansion and Extra-vocalization Function as the Strategy of Objectivity | 第39-40页 |
| ·Expansion and Extra-vocalization Function as the Strategy of Sodarity and Aligned | 第40-42页 |
| ·Contraction and Intra-vocalization Functions as the Strategy of Subjectivity | 第42-43页 |
| Chapter Five Conclusion | 第43-45页 |
| ·Summary of Major Findings | 第43页 |
| ·Implication | 第43-44页 |
| ·Limitations | 第44-45页 |
| Appendix | 第45-55页 |
| Bibliography | 第55-57页 |
| Acknowledgements | 第57页 |
