| 摘要 | 第1-8页 |
| Abstract | 第8-10页 |
| Chapter One Introduction | 第10-12页 |
| ·Background of the Study | 第10页 |
| ·Study Objectives | 第10-11页 |
| ·Organization of the Thesis | 第11-12页 |
| Chapter Two Literature Review | 第12-26页 |
| ·Relative Studies on Vagueness at Home and Abroad | 第12-15页 |
| ·Studies from Semantic Point of View | 第12-14页 |
| ·Studies from Pragmatic Perspective | 第14-15页 |
| ·Studies from Phylosophical Perspectives | 第15页 |
| ·Relative Studies on Hedges at Home and Abroad | 第15-24页 |
| ·Studies from Semantic Perspective | 第16-18页 |
| ·Studies from Pragmatic Perspective | 第18-20页 |
| ·Pragmatic Studies on Hedges in Practical Discourse | 第20-24页 |
| ·Relative Studies on Thunderstorm | 第24-26页 |
| Chapter Three Theoretical Framework | 第26-33页 |
| ·Adaptation Theory | 第26-31页 |
| ·A Brief Introduction to Adaptation Theory | 第26-27页 |
| ·Making a Choice | 第27-28页 |
| ·Three Properties of Language | 第28-29页 |
| ·Four Angles of Investigation | 第29-31页 |
| ·The Pragmatic Analysis of Hedges Based on Adaptation Theory | 第31-33页 |
| Chapter Four Research Methodology and Data Analysis | 第33-40页 |
| ·Research Questions | 第33页 |
| ·Data Collections | 第33-34页 |
| ·Methods of the Analysis | 第34页 |
| ·The Frequency of Hedges in Thunderstorm | 第34-36页 |
| ·The Analysis of Reasons for Character's Differences of Using Hedges in Thunderstorm | 第36-40页 |
| Chapter Five Pragmatic Functions of Hedges in Thunderstorm | 第40-56页 |
| ·Adaption to the Speaker's Mental World | 第40-51页 |
| ·Protecting Oneself | 第41-45页 |
| ·Following the Principle of Economy | 第45-47页 |
| ·Helping to Achieve Accuracy | 第47-49页 |
| ·Highlighting Important Information | 第49-51页 |
| ·Adaption to the Social World | 第51-54页 |
| ·Showing Politeness | 第51-52页 |
| ·Avoiding Threatening Other's Face | 第52-54页 |
| ·Adaption to the Physical World | 第54-56页 |
| Chapter Six Conclusions | 第56-59页 |
| ·Major Findings | 第56-57页 |
| ·Iimitations and Suggestions for Future Studies | 第57-58页 |
| ·Implications | 第58-59页 |
| Bibliography | 第59-62页 |
| 攻读学位期间完成的学术论文 | 第62-64页 |
| Acknowledgements | 第64页 |
