| Acknowledgements | 第1-5页 |
| Abstract(English) | 第5-8页 |
| Abstract(Chinese) | 第8-9页 |
| Contents | 第9-11页 |
| List of Tables | 第11-12页 |
| Chapter 1 Introduction | 第12-16页 |
| ·Research background and general purpose | 第12-14页 |
| ·Layout of the thesis | 第14-16页 |
| Chapter 2 Literature Review | 第16-30页 |
| ·Aspects of L2 vocabulary knowledge | 第16-19页 |
| ·The process of L2 vocabulary acquisition | 第19-20页 |
| ·L2 incidental vocabulary acquisition | 第20-22页 |
| ·The concept of incidental vocabulary acquisition | 第20-21页 |
| ·The importance of incidental vocabulary acquisition in L2 learning | 第21-22页 |
| ·L2 Incidental vocabulary acquisition through reading | 第22-25页 |
| ·Relationship between L2 vocabulary acquisition and reading | 第22-23页 |
| ·Empirical studies of L2 vocabulary acquisition through reading tasks | 第23-25页 |
| ·The Involvement Load Hypothesis(ILH) | 第25-30页 |
| ·Components of involvement load | 第25-26页 |
| ·Involvement index and task-induced involvement load | 第26-28页 |
| ·Assumption of the Involvement Load Hypothesis | 第28页 |
| ·Empirical studies on ILH in incidental vocabulary acquisition through reading | 第28-30页 |
| Chapter 3 Methodology | 第30-39页 |
| ·Research questions | 第30页 |
| ·Subjects | 第30-32页 |
| ·Material | 第32-33页 |
| ·Selection of reading passage | 第32页 |
| ·Selection of target words | 第32-33页 |
| ·Tasks | 第33-35页 |
| ·Instruments | 第35页 |
| ·Procedures | 第35-36页 |
| ·Scoring of tests | 第36-38页 |
| ·Data analysis | 第38-39页 |
| Chapter 4 Results and discussion | 第39-50页 |
| ·Results of the study | 第39-46页 |
| ·Results for research question 1 | 第39-40页 |
| ·Results for research question 2 | 第40-43页 |
| ·Results for research question 3 | 第43-46页 |
| ·Discussion | 第46-50页 |
| ·General effects of reading tasks on L2 vocabulary acquisition | 第46-47页 |
| ·Role of task-induced involvement load | 第47-49页 |
| ·Modified effects of reading tasks on L2 vocabulary acquisition by English proficiency | 第49-50页 |
| Chapter 5 Conclusion | 第50-54页 |
| ·Summary of the study | 第50-51页 |
| ·Pedagogical implications | 第51-52页 |
| ·Limitation and suggestions for further research | 第52-54页 |
| Bibliography | 第54-58页 |
| Appendix Ⅰ | 第58-59页 |
| Appendix Ⅱ Reading Materials and Tasks | 第59-65页 |
| Appendix Ⅲ | 第65-66页 |
| 作者简历 | 第66页 |
