| Abstract | 第1-6页 |
| 摘要 | 第6-7页 |
| Contents | 第7-9页 |
| Introduction | 第9-12页 |
| Chapter One Literature Review | 第12-31页 |
| ·Previous Researches on Vagueness | 第12-19页 |
| ·Researches on Vagueness from the Aspect of Philosophy | 第12-14页 |
| ·Researches on Vagueness from the Aspect of Semantics | 第14-16页 |
| ·Researches on Vagueness from the Aspect of Psychology | 第16-17页 |
| ·Researches on Vagueness from the Aspect of Pragmatics | 第17-19页 |
| ·Vague Language | 第19-31页 |
| ·Definition of Vagueness | 第19-23页 |
| ·Classification of Vague Language | 第23-26页 |
| ·Characteristics of Vague Language | 第26-27页 |
| ·Reasons for the Existence of Vagueness | 第27-31页 |
| Chapter Two Vagueness in Medical English | 第31-39页 |
| ·Definition of Medical English | 第31-32页 |
| ·Vagueness Reflected from General Features of Medical English | 第32-37页 |
| ·Lexical Features | 第33-35页 |
| ·Syntactic Features | 第35-36页 |
| ·Textual Features | 第36-37页 |
| ·Reasons for the Existence of Vagueness in Medical English | 第37-39页 |
| Chapter Three Pragmatic Approach to Vagueness in Medical English | 第39-69页 |
| ·Pragmatic Vagueness | 第39-49页 |
| ·Definition of Pragmatic Vagueness | 第39-43页 |
| ·Classification of Pragmatic Vagueness | 第43-49页 |
| ·Pragmatic Vagueness and the Cooperative Principle | 第49-61页 |
| ·Vagueness in the Observance of CP | 第52-56页 |
| ·Vagueness in the Violation of CP | 第56-61页 |
| ·Pragmatic Vagueness and the Politeness Principle | 第61-69页 |
| ·The Politeness Theories | 第62-65页 |
| ·Vagueness in the Observance of Politeness Principle | 第65-69页 |
| Chapter Four Functions of Vagueness in Medical English | 第69-81页 |
| ·Positive Effects | 第70-78页 |
| ·Avoiding Taboos | 第70-71页 |
| ·Achieving Politeness | 第71-73页 |
| ·Protecting Oneself | 第73-75页 |
| ·Making Language More Objective | 第75-76页 |
| ·Making Language More Flexible | 第76-78页 |
| ·Possible Negative Effects | 第78-81页 |
| Conclusion | 第81-83页 |
| References | 第83-86页 |
| Acknowledgements | 第86页 |
