| Abstract | 第1-6页 |
| 中文摘要 | 第6-9页 |
| Introduction | 第9-11页 |
| Chapter Ⅰ What is Vague Language | 第11-27页 |
| ·Defining Vague Language | 第11-16页 |
| ·Classification of Vague Language | 第16-23页 |
| ·Vague Language in Semantics | 第23-27页 |
| Chapter Ⅱ Analysis of Communicative Functions of Vague Language | 第27-48页 |
| ·Vague Language in Pragmatics | 第27-29页 |
| ·Analysis of Communicative Functions of Vague Language | 第29-48页 |
| ·Giving the Right Amount of Information | 第30页 |
| ·Deliberately Withholding Information | 第30-32页 |
| ·Making Up for Linguistic Inadequacy | 第32-33页 |
| ·Lacking Specific Information | 第33-34页 |
| ·For Self-protection | 第34-38页 |
| ·Making Language More Polite | 第38-41页 |
| ·Declaring One's Position | 第41-43页 |
| ·Meeting the Need for Esteem | 第43-45页 |
| ·Following Principles of Economy | 第45-48页 |
| Chapter Ⅲ The Interpretation of Vague Language in Communication by Relevance Theory | 第48-68页 |
| ·The Process of Vague Language Production | 第48-49页 |
| ·Psychological Factors of Vague Language Production | 第49-50页 |
| ·The Introduction of Relevance Theory to Vague Language Study | 第50-58页 |
| ·Concept of Communication in RT | 第52-54页 |
| ·Relevance Principle in RT | 第54-56页 |
| ·Concept of Context in RT | 第56-58页 |
| ·The Interpretation of Vague Language in Communication by RT | 第58-68页 |
| ·Case Study | 第58-65页 |
| ·Research Findings | 第65-68页 |
| Chapter Ⅳ Implications for Foreign Language Teaching | 第68-78页 |
| ·Training Vague-tolerate Language Learners | 第68-70页 |
| ·To Cultivate Learners' Cognitive Learning Style of Inferring | 第70-72页 |
| ·Making Foreign Language Learning More Efficient | 第72-73页 |
| ·To Improve Learners' Communicative Competence | 第73-78页 |
| ·Appropriate Selection of Form and Level of Inexplicitness | 第74-75页 |
| ·Flexible Selection of Vague Language | 第75-76页 |
| ·To Improve Cross-communicative Ability | 第76-78页 |
| Conclusion | 第78-80页 |
| Acknowledgements | 第80-81页 |
| Bibliography | 第81-84页 |
