| Abstract | 第1-5页 |
| 中文摘要 | 第5-7页 |
| Chapter One Introduction | 第7-10页 |
| ·The Universality of Vague Language in Communication | 第7页 |
| ·The Necessity of the Study of Vague Language | 第7-8页 |
| ·The Purpose of This Thesis | 第8-9页 |
| ·The Outline of This Thesis | 第9-10页 |
| Chapter Two Notions Related to Vague Language and Previous Studies of Vague Language | 第10-21页 |
| ·Notions Related to Vague Language | 第10-17页 |
| ·The Previous Studies of Vague Language | 第17-20页 |
| ·Functions of Vague Language | 第20页 |
| ·Summary | 第20-21页 |
| Chapter Three The Linguistic Adaptation Theory | 第21-28页 |
| ·Key Notions | 第21-23页 |
| ·Four Angles of Investigation | 第23-26页 |
| ·The Theoretical Emphasis of the Four Angles in This Thesis | 第26-27页 |
| ·Summary | 第27-28页 |
| Chapter Four The Application of Vague Language in Communication | 第28-43页 |
| ·The Variability of Vague Language in Communication | 第28-36页 |
| ·The Reasons for the Application of Vague Language | 第36-42页 |
| ·Summary | 第42-43页 |
| Chapter Five The Application of Vague Language in the English Classroom | 第43-50页 |
| ·The Conditions in Which Vague Language is Applied in the English Classroom | 第43-49页 |
| ·Functions of the Application of Vague Language in the English Classroom | 第49页 |
| ·Summary | 第49-50页 |
| Chapter Six Conclusion | 第50-53页 |
| ·Concluding Remarks | 第50-51页 |
| ·Implications | 第51页 |
| ·Limitations and Prospect | 第51-53页 |
| References | 第53-56页 |
| Acknowledgments | 第56-57页 |
