| 摘要 | 第1-5页 |
| Abstract | 第5-9页 |
| Chapter Ⅰ Introduction | 第9-13页 |
| ·Background of the Research | 第9-10页 |
| ·Purpose and Significance of the Research | 第10-11页 |
| ·Research Questions and Methods | 第11页 |
| ·Organization of the Thesis | 第11-13页 |
| Chapter Ⅱ Literature Review and Theoretical Background | 第13-30页 |
| ·Related Studies | 第13-24页 |
| ·Studies on Definitions and Features of Vague Expressions | 第13-16页 |
| ·Studies on Four Perspectives of Vague Expressions | 第16-20页 |
| ·Some Related Terms to Vague Expressions | 第20-24页 |
| ·Theoretical Background | 第24-28页 |
| ·Verschuren's Adaptation Theory | 第24-27页 |
| ·Sperber and Wilson's Relevance Theory | 第27-28页 |
| ·Summary | 第28-30页 |
| Chapter Ⅲ Vague Expressions in English Business Correspondence(EBC) | 第30-41页 |
| ·English Business Correspondence | 第30-35页 |
| ·Meaning and Functions of EBC | 第30-32页 |
| ·Principles for EBC Writing | 第32-33页 |
| ·Classification of EBC | 第33-35页 |
| ·Vague Expressions in EBC | 第35-40页 |
| ·Necessity of Vague Expressions in EBC | 第35-37页 |
| ·General Situations of Using Vague Expressions in EBC | 第37-38页 |
| ·Linguistic Realization of Vague Expressions in EBC | 第38-40页 |
| ·Summary | 第40-41页 |
| Chapter Ⅳ An Analysis on the Application of Vague Expressions inEBC from Pragmatic Perspective | 第41-59页 |
| ·Pragmatic Theories Applied in the Use of Vague Expressions in EBC | 第41-45页 |
| ·Adaptation Theory Applied in the Present Study | 第41-43页 |
| ·Relevance Theory Applied in the Present Study | 第43-45页 |
| ·Vague Expressions Used in Different Kinds of EBC from Pragmatic Perspective | 第45-55页 |
| ·Vague Expressions in Collaborative Letters | 第45-49页 |
| ·Vague Expressions in Convivial Letters | 第49-51页 |
| ·Vague Expressions in Competitive Letters | 第51-53页 |
| ·Vague Expressions in Conflictive Letters | 第53-55页 |
| ·Pragmatic Functions of Vague Expressions in EBC | 第55-58页 |
| ·Providing Right Amount of Information | 第56页 |
| ·Being Polite and Lessening Affront | 第56-57页 |
| ·Being Persuasive | 第57页 |
| ·Enhancing the Flexibility of Expression | 第57-58页 |
| ·Summary | 第58-59页 |
| Chapter Ⅴ Conclusion | 第59-62页 |
| ·Major Findings | 第59-60页 |
| ·Implications | 第60页 |
| ·Limitations | 第60-61页 |
| ·Suggestions for Further Study | 第61-62页 |
| Works Cited | 第62-65页 |
| Acknowledgements | 第65-66页 |
| 个人简介 | 第66-67页 |
