| 创新性声明 | 第1页 |
| 关于论文使用授权的说明 | 第2-3页 |
| 摘要 | 第3-4页 |
| Abstract | 第4-8页 |
| Introduction | 第8-14页 |
| Chapter One What is Meant by Vague Language and Hedges? | 第14-22页 |
| ·Overview of Vague Language and Hedge | 第14-15页 |
| ·Distinctions between Vague Language and Language Vague | 第15-17页 |
| ·Definitions of Hedges | 第17-18页 |
| ·Causations of Hedges | 第18-22页 |
| Chapter Two The Increasing Scope of Hedges Use | 第22-39页 |
| ·Reasons for the Increasing Scope of Hedges Use | 第22-24页 |
| ·Dinstinctions among Vagueness, Ambiguity, Generality and Polysemy | 第24-27页 |
| ·Polysemy and Vagueness | 第24-25页 |
| ·Vagueness and Ambiguity | 第25-26页 |
| ·Vagueness and Generality | 第26-27页 |
| ·Types of Devices for Expressing Vagueness | 第27-28页 |
| ·An Effective Way to Select Hedges to Exchange Ideas | 第28-30页 |
| ·Hedges and Their Types | 第30-36页 |
| ·He Ziran’s Classification of Hedges | 第30-31页 |
| ·Generally Acknowledged Classification of Hedges | 第31-33页 |
| ·Classification of Hedges on the Basis of Functions | 第33-34页 |
| ·Classification of Hedges on the Basis of Structure | 第34-36页 |
| ·Determination between Precision and Imprecision | 第36页 |
| ·Semantic Features of Hedges | 第36-37页 |
| ·Pragmatic Features of Hedges | 第37-39页 |
| Chapter Three Pragmatic Values of Hedges Based On the Two Principles | 第39-49页 |
| ·Hedges and Politeness Principles | 第39-43页 |
| ·Hedges and the Cooperative Principle | 第43-46页 |
| ·Understanding hedges Depends on Pragmatic Contexts | 第46-47页 |
| ·Vagueness Restricted by Pragmatic Context | 第47-49页 |
| Chapter Four Pragmatic Values of Hedges | 第49-62页 |
| ·Theoretical Basis for Pragmatic Values of Hedges | 第51-52页 |
| ·Pragmatic Values of Hedges | 第52-55页 |
| ·Hedges as a Method of Word-finding | 第52-53页 |
| ·Hedges as a Politeness Strategy | 第53-54页 |
| ·Hedges as a Strategy of Self-protection | 第54-55页 |
| ·As Being Pervasive | 第55页 |
| ·Hedges Pragmatic Values in Ads | 第55-57页 |
| ·Increasing Memorability | 第56页 |
| ·Prompting Selling | 第56-57页 |
| ·Hedges Pragmatic Values in Legal Language | 第57-59页 |
| ·Great Restraint of the Criminals | 第57-58页 |
| ·Enhancement of Legal Language’s Flexibility | 第58-59页 |
| ·Hedges as a Tactful Expression | 第59页 |
| ·Hedges Pragmatic Values in Science and Technology | 第59-61页 |
| ·Hedges Pragmatic Values in the Political Speeches | 第61-62页 |
| Chapter Five Conclusion | 第62-66页 |
| Acknowledgements | 第66-68页 |
| Bibliography | 第68-72页 |
| 研究成果 | 第72页 |
