| 摘要 | 第3-4页 |
| Abstract | 第4-5页 |
| 1 Introduction | 第8-13页 |
| 1.1 Background of the Study | 第8-10页 |
| 1.2 Purposes and Significance of the Study | 第10-11页 |
| 1.3 Outline of the Study | 第11-13页 |
| 2 Literature Review | 第13-32页 |
| 2.1 Language Attrition | 第13-26页 |
| 2.1.1 Brief Introduction to Language Attrition Study Abroad and at Home | 第13-14页 |
| 2.1.2 Definition of Language Attrition | 第14-16页 |
| 2.1.3 Taxonomy of Language Attrition | 第16-18页 |
| 2.1.4 Factors Influencing Foreign Language Attrition | 第18-26页 |
| 2.2 Dynamic Systems Theory | 第26-31页 |
| 2.2.1 Brief Introduction to the Study of DST Abroad and at Home | 第26-27页 |
| 2.2.2 Features of DST | 第27-30页 |
| 2.2.3 The Study of Language Attrition from the Perspective of DST | 第30-31页 |
| 2.3 Summary | 第31-32页 |
| 3 Methodology | 第32-49页 |
| 3.1 Research Questions | 第32-33页 |
| 3.2 Research Participants | 第33-34页 |
| 3.3 Research Design | 第34-35页 |
| 3.4 Research Instruments | 第35-46页 |
| 3.4.1 Students' English Learning Motivation Questionnaire | 第35-45页 |
| 3.4.2 English Placement Test | 第45-46页 |
| 3.4.3 SPSS 19.0 | 第46页 |
| 3.5 Data Collection and Analysis | 第46-48页 |
| 3.5.1 Data Collection | 第46-47页 |
| 3.5.2 Data Analysis | 第47-48页 |
| 3.6 Summary | 第48-49页 |
| 4 Results and Discussion | 第49-62页 |
| 4.1 The Impact of Three-month Nonuse on English Attrition | 第49-52页 |
| 4.1.1 The Occurrence of Language Attrition Among the Participants | 第49-51页 |
| 4.1.2 Explanation of the Phenomenon of Language Attrition | 第51-52页 |
| 4.2 The Impact of Pre-attrition English Proficiency on English Attrition | 第52-55页 |
| 4.2.1 Different Attrition Rate between High and Low Proficiency Groups | 第52-53页 |
| 4.2.2 Significant Differences between High and Low Proficiency Groups | 第53-54页 |
| 4.2.3 Explannations of the Differences between High and Low Proficiency Groups | 第54-55页 |
| 4.3 The Impact of English Learning Motivation on English Attrition | 第55-58页 |
| 4.3.1 Regression Analysis Among Seven Types of Motivation | 第55-58页 |
| 4.3.2 Explanations of the Predictive Indicator among the Seven Types of Motivation | 第58页 |
| 4.4 Predictive Indicator of English Attrition | 第58-60页 |
| 4.4.1 Regression Analysis between Pre-attrition English Proficiency and Motivation | 第58-59页 |
| 4.4.2 Explanations of the Predictive Indicator of English Attrition | 第59-60页 |
| 4.5 Summary | 第60-62页 |
| Conclusion | 第62-66页 |
| Bibliography | 第66-71页 |
| Appendix | 第71-73页 |
| Publications during M.A. Study | 第73-74页 |
| Acknowledgements | 第74-75页 |
