| 摘 要 | 第4-5页 |
| Abstract | 第5-6页 |
| Ⅰ Introduction | 第9-13页 |
| 1.1 Research Background | 第9-11页 |
| 1.2 Research Questions | 第11页 |
| 1.3 Significance of the Research | 第11-12页 |
| 1.3.1 Theoretical Significance | 第11-12页 |
| 1.3.2 Practical Significance | 第12页 |
| 1.4 Organization of Thesis | 第12-13页 |
| Ⅱ Literature Review | 第13-26页 |
| 2.1 Definition of Language Attrition | 第13-15页 |
| 2.2 Types of Language Attrition | 第15-16页 |
| 2.3 Three Hypothesis Related to Language Attrition | 第16-21页 |
| 2.3.1 The Regression Hypothesis | 第17-18页 |
| 2.3.2 The Inverse Hypothesis | 第18-19页 |
| 2.3.3 The Threshold Hypothesis | 第19-21页 |
| 2.4 The Individual Factors Affecting Language Attrition | 第21-23页 |
| 2.4.1 Initial Proficiency | 第21页 |
| 2.4.2 Attrition Time | 第21-22页 |
| 2.4.3 Age | 第22-23页 |
| 2.4.4 Gender | 第23页 |
| 2.5 Other Main Researches on Language Attrition | 第23-26页 |
| 2.5.1 Research abroad | 第23-24页 |
| 2.5.2 Research at Home | 第24-26页 |
| Ⅲ Research Methodology | 第26-30页 |
| 3.1 Research Design | 第26页 |
| 3.2 Research Subjects | 第26-27页 |
| 3.3 Instruments | 第27-28页 |
| 3.4 Data Collection | 第28-30页 |
| Ⅳ Results and Discussion | 第30-45页 |
| 4.1 English Attrition after 18-month Disuse | 第30-32页 |
| 4.1.1 Scores in Pre-test and Post-test | 第30-31页 |
| 4.1.2 Group Differences between Scores in Pre-test and Post-test | 第31-32页 |
| 4.2 English Skills Suffering from Attrition | 第32-36页 |
| 4.2.1 Listening | 第32-33页 |
| 4.2.1.1 Statistics of Initial and Final Listening Proficiency | 第32-33页 |
| 4.2.1.2 Differences in Listening between Pre-test and Post-test | 第33页 |
| 4.2.2 Reading Comprehension | 第33-34页 |
| 4.2.2.1 Statistics of Initial and Final Reading Proficiency | 第33-34页 |
| 4.2.2.2 Differences in Reading between Pre-test and Post-test | 第34页 |
| 4.2.3 Writing and Translation | 第34-36页 |
| 4.2.3.1 Statistics of Initial and Final Proficiency of Writing and Translation | 第35页 |
| 4.2.3.2 Differences in Writing and Translation between Initial and Final Proficiency | 第35-36页 |
| 4.3 Relationship Between English Attrition and Initial Proficiency | 第36-39页 |
| 4.3.1 Subjects Grouping | 第36-37页 |
| 4.3.2 Initial and Final Proficiency | 第37页 |
| 4.3.3 English Attrition among Three Groups | 第37-39页 |
| 4.4 Gender Differences in Attrition | 第39-43页 |
| 4.4.1 Gender Difference in Listening Attrition | 第40-41页 |
| 4.4.2 Gender Difference in Reading Attrition | 第41-42页 |
| 4.4.3 Gender Difference in Attrition of Writing and Translation | 第42-43页 |
| 4.5 Summary | 第43-45页 |
| Ⅴ Conclusion | 第45-48页 |
| 5.1 Major Findings | 第45页 |
| 5.2 Implication for English Teaching and Learning | 第45-46页 |
| 5.2.1 English Teaching | 第45-46页 |
| 5.2.2 English Learning | 第46页 |
| 5.2.3 English Curriculum Planning | 第46页 |
| 5.3 Limitations and Suggestions for Further Study | 第46-48页 |
| Bibliography | 第48-53页 |
| Acknowledgements | 第53-54页 |
| 附录 1 攻读硕士学位期间发表的论文 | 第54页 |
