| 摘要 | 第4-5页 |
| Abstract | 第5页 |
| Chapter one Introduction | 第9-13页 |
| 1.1 Background of the Study | 第9-11页 |
| 1.2 Purpose of the Study | 第11页 |
| 1.3 Significance of the Study | 第11-12页 |
| 1.4 Layout of the Study | 第12-13页 |
| Chapter Two Literature Review | 第13-17页 |
| 2.1 Literature Review Abroad | 第13-15页 |
| 2.2 Literature Review at Home | 第15-17页 |
| Chapter Three Theoretical Framework of the Study | 第17-29页 |
| 3.1 Language Attrition | 第17-22页 |
| 3.1.1 Definition of Language Attrition | 第17-18页 |
| 3.1.2 Core Features and Influential Factors of Language Attrition | 第18-22页 |
| 3.1.2.1 Core Features of Language Attrition | 第18-19页 |
| 3.1.2.2 Influential Factors of Language Attrition | 第19-22页 |
| 3.2 Learning Strategies | 第22-25页 |
| 3.2.1 Definition of Learning Strategies | 第22-23页 |
| 3.2.2 Classification of Learning Strategies | 第23-24页 |
| 3.2.3 Classification of VLS | 第24-25页 |
| 3.3 Theories in Second Language Attrition | 第25-29页 |
| 3.3.1 The Regression Hypothesis | 第26页 |
| 3.3.2 The Threshold Hypothesis | 第26-27页 |
| 3.3.3 The Dormant Language Hypothesis | 第27-28页 |
| 3.3.4 Dynamic Systems Theory | 第28-29页 |
| Chapter Four Methodology of the Study | 第29-36页 |
| 4.1 Research Design | 第29页 |
| 4.2 Research Questions | 第29-30页 |
| 4.3 Research Participants | 第30-31页 |
| 4.4 Research Instruments | 第31-33页 |
| 4.4.1 Vocabulary Proficiency Test | 第31-32页 |
| 4.4.2 Questionnaire of VLS | 第32-33页 |
| 4.5 Data Collection | 第33-34页 |
| 4.6 Data Analysis | 第34-36页 |
| Chapter Five Major Findings and Discussions | 第36-62页 |
| 5.1 General Situation of Participants' Vocabulary Attrition with Three Months' Disuse of English | 第36-38页 |
| 5.2 Vocabulary Attrition of High Proficiency Group and Low Proficiency Group30 | 第38-41页 |
| 5.2.1 Comparison of Vocabulary Attrition between High Proficiency Group and Low Proficiency Group | 第38-40页 |
| 5.2.2 The Correlation between Vocabulary Attrition and Initial English Proficiency | 第40-41页 |
| 5.3 Vocabulary Attrition and the Use of VLS | 第41-47页 |
| 5.3.1 General Situation of Participants' Use of VLS | 第41-43页 |
| 5.3.2 Comparison of VLS Use between High Attrition Group and Low Attrition Group | 第43-46页 |
| 5.3.3 The Correlation between Vocabulary Attrition and Three Kinds of VLS Use | 第46-47页 |
| 5.4 Specific Situation of VLS Use and Vocabulary Attrition between High and Low Attrition Groups | 第47-57页 |
| 5.4.1 Specific Situation of Cognitive VLS Use and Vocabulary Attrition between Two Attrition Groups | 第48-53页 |
| 5.4.2 Specific Situation of Meta-cognitive VLS Use and Vocabulary Attrition between Two Attrition Groups | 第53-55页 |
| 5.4.3 Specific Situation of Social/Affective VLS Use and Vocabulary Attrition between Two Attrition Groups | 第55-57页 |
| 5.5 Discussions | 第57-62页 |
| Chapter Six Conclusion | 第62-65页 |
| 6.1 Summary of Major Findings | 第62页 |
| 6.2 Pedagogic Implications | 第62-63页 |
| 6.3 Limitations and Suggestions | 第63-65页 |
| Bibliography | 第65-70页 |
| Appendix Ⅰ | 第70-71页 |
| Appendix Ⅱ | 第71-73页 |
| Publications | 第73-74页 |
| Acknowledgement | 第74页 |
