| Acknowledgements | 第1-5页 |
| Abstract in Chinese | 第5-6页 |
| Abstract in English | 第6-8页 |
| Contents | 第8-10页 |
| List of Tables | 第10-11页 |
| Chapter One Introduction | 第11-15页 |
| ·Research Orientation | 第11页 |
| ·Background of the Present Study | 第11-13页 |
| ·Research Questions | 第13-14页 |
| ·Organization of the Thesis | 第14-15页 |
| Chapter Two Literature Review | 第15-31页 |
| ·Theories and Concepts Relevant to Vocabulary Acquisition | 第15-20页 |
| ·Depth of Processing Theory | 第15-16页 |
| ·Input and Output Hypothesis | 第16-18页 |
| ·Noticing Hypothesis | 第18-19页 |
| ·Receptive and Productive Vocabulary Knowledge | 第19-20页 |
| ·Incidental Vocabulary Acquisition | 第20-24页 |
| ·The Definitions of Incidental Vocabulary Acquisition in SLA | 第20-21页 |
| ·Processes of Incidental Vocabulary Acquisition | 第21-23页 |
| ·Intentional and Incidental Learning | 第21页 |
| ·Implicit and Explicit Learning | 第21-23页 |
| ·Empirical Studies on Incidental Vocabulary Learning through Reading Tasks | 第23-24页 |
| ·The Involvement Load Hypothesis | 第24-30页 |
| ·Three Components | 第24-25页 |
| ·Task-induced Involvement Load | 第25-28页 |
| ·Relevant Empirical Studies on ILH Home and Abroad | 第28-30页 |
| ·Summary | 第30-31页 |
| Chapter Three Research Methodology | 第31-39页 |
| ·Questions and Hypotheses | 第31-32页 |
| ·The Tasks | 第32-33页 |
| ·Subjects | 第33-34页 |
| ·Materials | 第34-36页 |
| ·Reading Passages and Target Words | 第34-35页 |
| ·The Glossary | 第35页 |
| ·The Reading Comprehension Questions | 第35-36页 |
| ·Vocabulary Testing | 第36页 |
| ·Procedures of Data Collection | 第36-37页 |
| ·Scoring and Data Analysis | 第37-39页 |
| Chapter Four Results of the Experiments | 第39-53页 |
| ·Tasks with a Positive Effect on Immediate Productive Vocabulary Acquisition | 第39-43页 |
| ·Similar Effect of Tasks with the Same Involvement Load on Productive Vocabulary Acquisition | 第43-44页 |
| ·Tasks with no Significant Effect on Delayed Productive Vocabulary Acquisition | 第44-48页 |
| ·Output Tasks Being More Effective than Input Tasks in Enhancing Productive Vocabulary Acquisition | 第48-50页 |
| ·Reassessing the Involvement Load Hypothesis and Other Factors | 第50-53页 |
| Chapter Five Conclusions and Implications | 第53-58页 |
| ·Reflections on the Main Findings | 第53-54页 |
| ·Pedagogical Implications | 第54-56页 |
| ·Limitations of the Present Study | 第56页 |
| ·Suggestions for Future Research | 第56-58页 |
| Bibliography | 第58-64页 |
| Appendix Ⅰ | 第64-66页 |
| Appendix Ⅱ | 第66-68页 |
| Appendix Ⅲ | 第68-71页 |
| Appendix Ⅳ | 第71-74页 |
| Appendix Ⅴ | 第74-76页 |
| Appendix Ⅵ | 第76-77页 |
| Appendix Ⅶ | 第77-78页 |
| Appendix Ⅷ | 第78页 |
