| Abstract | 第1-5页 |
| 摘要 | 第5-10页 |
| Chapter One Introduction | 第10-13页 |
| ·Background of the present study | 第10-11页 |
| ·Purpose and significance of the present study | 第11页 |
| ·Structure of the thesis | 第11-13页 |
| Chapter Two Literature Review | 第13-29页 |
| ·Definition of key terms | 第13-15页 |
| ·Definition of incidental vocabulary acquisition | 第13-14页 |
| ·Definition of task | 第14页 |
| ·Definition of input enhancement | 第14-15页 |
| ·Theoretical framework | 第15-20页 |
| ·Noticing hypothesis | 第15-17页 |
| ·Levels of processing hypothesis | 第17-18页 |
| ·Involvement load hypothesis | 第18-20页 |
| ·Related empirical studies at home and abroad | 第20-29页 |
| ·Studies on the effects of different reading tasks on L2 IVA | 第20-25页 |
| ·Studies on the effects of input enhancement on L2 IVA | 第25-26页 |
| ·Studies on the effects of vocabulary size on L2 IVA | 第26-29页 |
| Chapter Three Research Methodology | 第29-36页 |
| ·Research questions and hypotheses | 第29-30页 |
| ·Subjects | 第30页 |
| ·Reading material | 第30-32页 |
| ·Reading passage and target words | 第30-31页 |
| ·Reading tasks | 第31-32页 |
| ·Instrument | 第32-34页 |
| ·Research procedure | 第34-35页 |
| ·The first phase | 第34-35页 |
| ·The second phase | 第35页 |
| ·The third phase | 第35页 |
| ·Data analysis | 第35-36页 |
| Chapter Four Results and Discussions | 第36-49页 |
| ·Results of the study | 第36-45页 |
| ·Results concerning the effects of different reading tasks on IVA | 第36-40页 |
| ·Results of three different reading tasks in the immediate vocabulary test | 第36-38页 |
| ·Results of three different reading tasks in the first delayed vocabulary test | 第38-39页 |
| ·Results of three different reading tasks in the second delayed vocabulary test | 第39-40页 |
| ·Results concerning the effects of input enhancement on IVA | 第40-41页 |
| ·Comparison of reading tasks differing only in input enhancement in the immediate vocabulary test | 第40页 |
| ·Comparison of reading tasks differing only in input enhancement in the first delayed vocabulary test | 第40-41页 |
| ·Comparison of reading tasks differing only in input enhancement in the second delayed vocabulary test | 第41页 |
| ·Results concerning the effects of vocabulary size on IVA | 第41-42页 |
| ·The students’ opinion on IVA through conducting different reading tasks | 第42-45页 |
| ·Discussions of the study | 第45-49页 |
| Chapter Five Conclusion | 第49-52页 |
| ·Main findings of the study | 第49-50页 |
| ·Implications from the study | 第50-51页 |
| ·Limitations of the study | 第51-52页 |
| References | 第52-58页 |
| Appendix A | 第58-62页 |
| Appendix B | 第62-65页 |
| Appendix C | 第65-69页 |
| Appendix D | 第69-73页 |
| Appendix E | 第73-76页 |
| Appendix F | 第76-78页 |
| Appendix G | 第78-80页 |
| Appendix H | 第80-82页 |
| Appendix I | 第82-83页 |
| Appendix J | 第83-86页 |
| Acknowledgements | 第86-87页 |
| 在读期间公开发表论文（著）及科研情况 | 第87页 |
