| Abstract | 第1-7页 |
| 摘要 | 第7-10页 |
| Chapter one Introduction | 第10-14页 |
| ·Research background | 第10-12页 |
| ·Research significance and purpose | 第12页 |
| ·The overall structure of the thesis | 第12-14页 |
| Chapter Two Literature review | 第14-29页 |
| ·Introduction of incidental vocabulary acquisition | 第14-17页 |
| ·Definition of incidental vocabulary acquisition | 第14-15页 |
| ·Two ways of learning vocabulary | 第15-17页 |
| ·Factors affecting incidental vocabulary acquisition | 第17-19页 |
| ·Learners' factors | 第17-18页 |
| ·Textual factors | 第18页 |
| ·Tasks' factors | 第18-19页 |
| ·The introduction of the tasks in incidental vocabulary acquisition | 第19-24页 |
| ·Definition of tasks in incidental vocabulary acquisition | 第19-20页 |
| ·Features of task types in incidental vocabulary acquisition | 第20-21页 |
| ·Empirical researches on different tasks in incidental vocabulary acquisition at home and abroad | 第21-24页 |
| ·Related theoretical foundations | 第24-29页 |
| Chapter Three Research methodology | 第29-40页 |
| ·Research questions | 第29页 |
| ·Participants | 第29-30页 |
| ·Instrument | 第30-32页 |
| ·Procedures | 第32-39页 |
| ·Vocabulary level test (VLT) | 第32-33页 |
| ·Pilot study | 第33-35页 |
| ·Main study | 第35-39页 |
| ·Data collection | 第39-40页 |
| Chapter Four Data analysis and discussion | 第40-58页 |
| ·Analysis of the participants' English vocabulary proficiency in the VLT | 第40-41页 |
| ·Impact on IVA by three different tasks in the immediate test | 第41-45页 |
| ·Descriptive statistic of three different tasks in the immediate test | 第41-42页 |
| ·Comparison of the impact on IVA by different tasks | 第42-43页 |
| ·Discussion | 第43-45页 |
| ·Impact on IVA by three different tasks in the delayed test | 第45-49页 |
| ·Descriptive statistics of different tasks in the delayed test | 第45-46页 |
| ·Comparison of the impact on IVA by different tasks | 第46-47页 |
| ·Discussion | 第47-49页 |
| ·Impact on IVA and vocabulary retention by the subjects' vocabulary level | 第49-58页 |
| ·Relationship between the subjects' vocabulary level and the short-term test | 第49-53页 |
| ·Relationship between the participants' vocabulary level and the long-term test | 第53-56页 |
| ·Summary | 第56-58页 |
| Chapter Five Conclusion | 第58-63页 |
| ·Major findings | 第58-59页 |
| ·Implications | 第59-60页 |
| ·Limitations and suggestions for the future study | 第60-63页 |
| Bibliography | 第63-68页 |
| Appendix Ⅰ | 第68-70页 |
| Appendix Ⅱ | 第70-72页 |
| Appendix Ⅲ | 第72-73页 |
| Appendix Ⅳ | 第73-75页 |
| Appendix Ⅴ | 第75-77页 |
| Appendix Ⅵ | 第77-79页 |
| Acknowledgements | 第79-80页 |
| 作者攻读学位期间发表的学术论文目录 | 第80-81页 |
