| 英文摘要 | 第1-5页 |
| Acknowledgements | 第5-7页 |
| Chapter 1 Introduction of vague language | 第7-13页 |
| 1．1 Introduction | 第7-9页 |
| 1．2 Defining vague language | 第9-10页 |
| 1．3 fuzzy set and language vagueness | 第10-13页 |
| Chapter 2 Impact of vagueness on linguistics | 第13-23页 |
| 2．1 Impact of vagueness on linguistics abroad | 第13-16页 |
| 2．2 Joanna Channell's analyses on the definition for vagueness | 第16-17页 |
| 2．3 Impact of Zadeh's theory on vagueness | 第17-23页 |
| 2．3．1 Impact on linguistics abroad and home | 第18-20页 |
| 2．3．2 Impact on semantic studies | 第20-23页 |
| Chapter 3 The place of vagueness in the study of language | 第23-30页 |
| 3．1 vagueness and communication | 第23-27页 |
| 3．2 The place of vagueness in the study of language | 第27-30页 |
| Chapter 4 Vagueness study from word to sentence | 第30-76页 |
| 4．1 Analyses of former definitions of vagueness | 第30-37页 |
| 4．1．1 Analyses of former definitions of vagueness | 第30-36页 |
| 4．1．2 Reconsideration of Peirce's definition | 第36页 |
| 4．1．3 Developed definition of vagueness | 第36-37页 |
| 4．2 Different levels of consideration on vagueness | 第37-76页 |
| 4．2．1 Lexical analyses on vagueness | 第37-43页 |
| 4．2．2 Semantic analyses on vagueness | 第43-52页 |
| 4．2．3 Pragmatic analyses on vagueness | 第52-76页 |
| Chapter 5 Vague language and its conclusion | 第76-80页 |
| 5．1 Main conclusion | 第76-77页 |
| 5．2 Implication of the study | 第77-78页 |
| 5．3 Limitation of the study | 第78页 |
| 5．4 Suggestions for further study | 第78-80页 |
| Appendix | 第80-84页 |
| Bibliography | 第84-88页 |
