| Acknowledgements | 第4-8页 |
| Abstract | 第8-9页 |
| 摘要 | 第10-12页 |
| Chapter One Introduction | 第12-16页 |
| 1.1 Background of the Study | 第12-14页 |
| 1.2 Purpose of the Study | 第14页 |
| 1.3 Significance of the Study | 第14页 |
| 1.4 Methods of the Study | 第14-15页 |
| 1.5 Organization of the Thesis | 第15-16页 |
| Chapter Two Literature Review | 第16-30页 |
| 2.1 Previous Studies on Metadiscourse | 第16-26页 |
| 2.1.1 Metadiscourse and Metadiscourse Markers | 第16-22页 |
| 2.1.2 The Classifications of Metadiscourse | 第22-23页 |
| 2.1.3 Visual Metadiscourse | 第23-25页 |
| 2.1.4 Working Classification of Metadiscourse | 第25-26页 |
| 2.2 Rhetoric,News Discourse and Metadiscourse | 第26-30页 |
| 2.2.1 Rhetoric:Aristotle's "Pathos","Ethos",and"Logos" | 第27页 |
| 2.2.2 Rhetoric,News Discourse and Metadiscourse as Persuasion | 第27-30页 |
| Chapter Three Methodology | 第30-34页 |
| 3.1 Research Questions | 第30页 |
| 3.2 Research Design | 第30-32页 |
| 3.2.1 Corpus Description | 第30-32页 |
| 3.2.2 Research Instrument | 第32页 |
| 3.3 Procedure and Data Analysis | 第32-34页 |
| Chapter Four Results and Discussion | 第34-82页 |
| 4.1 Results | 第34-37页 |
| 4.2 Discussion | 第37-38页 |
| 4.3 "Pathos":Creating Affective Appeals among Audiences | 第38-50页 |
| 4.3.1 Metadiscourse in "Pathos":Audience-oriented Engagement | 第38-40页 |
| 4.3.2 First-person Pronouns as Engagement Markers:Exerting Collective and Unified Force | 第40-45页 |
| 4.3.3 "You Know" as Engagement Marker:Inviting Audience to Think and Comment | 第45-47页 |
| 4.3.4 Attitude Markers in "Pathos":Indicating Emotions and Attitudes | 第47-49页 |
| 4.3.5 Summary | 第49-50页 |
| 4.4 "Ethos":Creating Credibility Appeals for News-workers Themselves | 第50-67页 |
| 4.4.1 Metadiscourse,Culture,and Ideology:Believe It or Not | 第51-53页 |
| 4.4.2 Combined Hedges with Boosters in "Ethos":Possibility,Probability,or Credibility? | 第53-57页 |
| 4.4.3 Hedge Clusters in "Ethos":Prudence or Dubiousness? | 第57-58页 |
| 4.4.4 Self Mentions in "Ethos":Signaling News-workers' Presence | 第58-63页 |
| 4.4.5 Evidentials in "Ethos":Rendering News-workers Trustworthy and Authoritative | 第63-66页 |
| 4.4.6 Summary | 第66-67页 |
| 4.5 "Logos":Creating Rational Appeals for News Discourse's Own Sake | 第67-82页 |
| 4.5.1 Metadiscourse Difference and News Style Difference | 第68-71页 |
| 4.5.2 Transitions and Endophoric Markers in "Logos" | 第71-72页 |
| 4.5.3 Code Glosses in "Logos":Rephrasing,Explaining,Elaborating What Has Been Said | 第72-76页 |
| 4.5.3.1 "I Mean" in Radio News | 第73-75页 |
| 4.5.3.2 "I Mean" in Television News | 第75-76页 |
| 4.5.4 Frame Markers in "Logos":Signaling Discourse Boundaries and Arguments | 第76-81页 |
| 4.5.4.1 "Coming up" in Television News | 第79-80页 |
| 4.5.4.2 "Welcome(back)to" in Television News | 第80-81页 |
| 4.5.5 Summary | 第81-82页 |
| Chapter Five Conclusion | 第82-85页 |
| 5.1 Major Findings | 第82-84页 |
| 5.2 Limitations and Further Study | 第84-85页 |
| Refefences | 第85-91页 |
| Appendix | 第91-94页 |
