| ABSTRACT | 第1-7页 |
| 摘要 | 第7-13页 |
| Chapter Ⅰ Introduction | 第13-19页 |
| ·Background of Study | 第13-16页 |
| ·Research Problem Statement | 第16-17页 |
| ·Significance of the Study | 第17-18页 |
| ·The Layout of the Paper | 第18-19页 |
| Chapter Ⅱ Literature Review | 第19-40页 |
| ·Vague Language | 第19-27页 |
| ·Definition of Vague Language | 第19-21页 |
| ·Different Perspective of Vague Language | 第21-27页 |
| ·Adaptation Theory | 第27-32页 |
| ·Three Properties of Language | 第27-29页 |
| ·Four Angles of Investigation | 第29-30页 |
| ·Previous Studies on Adaptation Theory | 第30-32页 |
| ·Business Correspondence | 第32-38页 |
| ·Definition of Business Correspondence | 第32页 |
| ·Classification of Business Correspondence | 第32-34页 |
| ·Principles for Business Writing | 第34-35页 |
| ·Functions of Business Correspondence | 第35-37页 |
| ·Previous Studies on Vague Language in English Business Correspondence | 第37-38页 |
| ·Focus of the Present Study | 第38-40页 |
| Chapter Ⅲ Methodology | 第40-43页 |
| ·A Quantitative Analysis of Vague Language | 第40-41页 |
| ·A Qualitative Analysis of Vague Language | 第41-43页 |
| ·Adaptation Theory | 第41-42页 |
| ·Adaptation Theory Applied in the Present Study | 第42-43页 |
| Chapter Ⅳ Data Analysis | 第43-55页 |
| ·Lexical Realization of Vague Language | 第43-49页 |
| ·Lexical Vagueness | 第43-47页 |
| ·Syntactical Vagueness | 第47-48页 |
| ·Hedges | 第48-49页 |
| ·Vague Language in Different Types of English Business Correspondence | 第49-55页 |
| Chapter Ⅴ Analysis of Vague Language via Adaptation Theory inEnglish Business Correspondence | 第55-79页 |
| ·Adaptation to Social Conventions | 第55-66页 |
| ·Adaptation to Social Conventions in Good-news and Neutral-news Correspondence | 第57-60页 |
| ·Adaptation to Social Conventions in Bad-news Correspondence | 第60-63页 |
| ·Adaptation to Social Conventions in Persuasive Correspondence | 第63-66页 |
| ·Adaptation to Psychological World | 第66-70页 |
| ·Adaptation to Psychological World in Good-news and Neutral-news Correspondence | 第67-68页 |
| ·Adaptation to Psychological World in Bad-news Correspondence | 第68-69页 |
| ·Adaptation to Psychological World in Persuasive Correspondence | 第69-70页 |
| ·Adaptation to Physical World | 第70-74页 |
| ·Adaptation to Physical World in Good-news and Neutral-news Correspondence | 第71页 |
| ·Adaptation to Physical World in Bad-news Correspondence | 第71-73页 |
| ·Adaptation to Physical World in Persuasive Correspondence | 第73-74页 |
| ·Pragmatic Functions of Vague Language in English Business Correspondence | 第74-79页 |
| ·Assisting Proper Employment of Business Expressions | 第74-75页 |
| ·Reinforcing the Persuasiveness | 第75-76页 |
| ·Making the Expression More Polite | 第76页 |
| ·Improving the Flexibility | 第76页 |
| ·Helping the Self-protection | 第76-77页 |
| ·Summary | 第77-79页 |
| Chapter Ⅵ Conclusion | 第79-84页 |
| ·Major Findings | 第79-81页 |
| ·Implications | 第81-82页 |
| ·Limitations and Suggestions for Future Researches | 第82-84页 |
| REFERENCE | 第84-87页 |
| ACKNOWLEDGEMENTS | 第87-88页 |
