| Synopsis | 第1-9页 |
| Chapter one Introduction | 第9-14页 |
| ·Research Background | 第9-10页 |
| ·Research Questions | 第10-11页 |
| ·Significance of the Research | 第11-12页 |
| ·Theoretical Significance | 第11-12页 |
| ·Practical Significance | 第12页 |
| ·Organization of the Thesis | 第12-14页 |
| Chapter Two Literature Review | 第14-26页 |
| ·Definition and Typology of Language Attrition | 第14-17页 |
| ·Some Findings in L2 Attrition Research | 第17-21页 |
| ·Focus on Learner | 第17-20页 |
| ·The Inverse Hypothesis | 第17-18页 |
| ·The Critical Threshold Hypothesis | 第18-19页 |
| ·The Regression Hypothesis | 第19-20页 |
| ·Focus on Language | 第20-21页 |
| ·The Interlanguage Hypothesis | 第20页 |
| ·The Linguistic Feature Hypotheses | 第20-21页 |
| ·Relevant Variables Governing the Process of Language Attrition | 第21-24页 |
| ·Language Strategy | 第24-26页 |
| Chapter Three Research Methodology | 第26-30页 |
| ·Research Design | 第26页 |
| ·Subjects | 第26-27页 |
| ·Instruments | 第27-28页 |
| ·Instrument for Investigation into Learning Strategies | 第27页 |
| ·Instrument for Measurement Of Language Proficiency | 第27-28页 |
| ·SPSS 13.0 for Windows | 第28页 |
| ·Data Collection and Analysis Procedures | 第28-30页 |
| Chapter Four Results | 第30-45页 |
| ·The Relation between Language Attrition and Language Proficiency | 第30-31页 |
| ·Differences between the Three Groups of Different Language Attrition Degrees | 第31-35页 |
| ·The Relation between the Language Attrition and Learning Strategies | 第35-45页 |
| ·Memory Strategy | 第36-37页 |
| ·Cognitive Strategy | 第37-38页 |
| ·Compensation Strategy | 第38-39页 |
| ·Metacognitive Strategy | 第39-40页 |
| ·Affective Strategy | 第40-41页 |
| ·Social Strategy | 第41-42页 |
| ·Two Significant Strategy Categories | 第42-45页 |
| ·Memory Strategies | 第42-43页 |
| ·Metacognitive Strategies | 第43-45页 |
| Chapter Five Discussions and Implications | 第45-53页 |
| ·Discussions | 第45-49页 |
| ·Language Attrition after Four Months' Summer Vacation | 第45-46页 |
| ·What is the Relationship between Language Attrition and Final Language Proficiency? | 第46-47页 |
| ·What is the Difference in Language Learning Strategy Preference among Students of Different Language Attrition Degrees? | 第47-48页 |
| ·What Strategies might have Significant Meaning towards Language Proficiency Maintenance? | 第48-49页 |
| ·Implications | 第49-51页 |
| ·Language Proficiency Maintenance | 第49-50页 |
| ·Strategy Acquisition | 第50-51页 |
| ·Limitations and Suggestions for the Furure Study | 第51-53页 |
| Conclusion | 第53-55页 |
| Bibliography | 第55-63页 |
| Appendix Ⅰ | 第63-66页 |
| Appendix Ⅱ | 第66-70页 |
| Acknowledgement | 第70-71页 |
| 导师及作者简介 | 第71-72页 |
| Abstract | 第72-75页 |
| 中文摘要 | 第75-77页 |
