| Abstract | 第1-7页 |
| 摘要 | 第7-8页 |
| Contents | 第8-10页 |
| Chapter One Introduction | 第10-12页 |
| ·Research Background | 第10页 |
| ·Research Purpose | 第10-11页 |
| ·Research Significance | 第11页 |
| ·Outline of the Thesis | 第11-12页 |
| Chapter Two Literature Review | 第12-18页 |
| ·Research on L2 Attrition Abroad | 第12-17页 |
| ·Researches in China | 第17-18页 |
| Chapter Three Theory Foundations | 第18-21页 |
| ·Definitions and Classifications of Language Attrition | 第18-19页 |
| ·Related Theories | 第19-21页 |
| ·Regression Hypothesis | 第19页 |
| ·Inverse Hypothesis | 第19页 |
| ·Critical Threshold Hypothesis | 第19-20页 |
| ·Retrieval Failure Theory | 第20-21页 |
| Chapter Four Research Design | 第21-60页 |
| ·Subjects | 第21页 |
| ·Research Questions | 第21页 |
| ·Instruments | 第21-22页 |
| ·English Pronunciation Proficiency Test Paper | 第22页 |
| ·English Pronunci ation Questionnaire | 第22页 |
| ·Research Procedures | 第22-23页 |
| ·Data Collection | 第23-25页 |
| ·Data Analysis | 第25-60页 |
| ·The Analysis of English Pronunciation Attrition | 第25-56页 |
| ·The Analysis of the Reasons for English Pronunciation Attrition | 第56-60页 |
| Chapter Five Strategies for Anti-pronunciation Attrition | 第60-64页 |
| ·Adjustments of English Major Curriculum | 第60页 |
| ·Adding More Pronunciation Teaching Hours | 第60页 |
| ·Opening Elective Courses of Pronunciation | 第60页 |
| ·Transformation of Traditional Pronunciation Teaching Modes | 第60-61页 |
| ·Diversified and Scientific Pronunciation Teaching | 第61页 |
| ·More Difficult Pronunciation Testing | 第61页 |
| ·More Instruction of Pronunciation Discrimination between English andChinese | 第61-62页 |
| ·Establishing Harmonious Teacher-student Relationship | 第62页 |
| ·Teachers' Having Higher Pronunciation Ability | 第62-63页 |
| ·Integrating Culture in Pronunciation Teaching | 第63页 |
| ·Increasing Students' Awareness of Self Pronunciation Revision | 第63-64页 |
| ·Regular Rectification | 第63页 |
| ·Good Pronunciation Habit | 第63-64页 |
| Chapter Six Conclusion | 第64-67页 |
| ·Conclusion of the Thesis | 第64-65页 |
| ·Limitations | 第65-66页 |
| ·Implications for Future Study | 第66-67页 |
| Bibliography | 第67-71页 |
| Appendix Ⅰ | 第71-73页 |
| Appendix Ⅱ | 第73-75页 |
| Appendix Ⅲ | 第75-77页 |
| Acknowledgements | 第77页 |
