| ACKNOWLEDGEMENTS | 第1-6页 |
| ABSTRACT | 第6-10页 |
| 中文摘要 | 第10-16页 |
| Chapter One INTRODUCTION | 第16-20页 |
| ·Background of the study | 第16-17页 |
| ·Significance of the study | 第17-19页 |
| ·Organization of the study | 第19-20页 |
| Chapter Two LITERATURE REVIEW | 第20-32页 |
| ·Incidental L2 vocabulary acquisition | 第20-21页 |
| ·Theoratical Background | 第21-26页 |
| ·The involvement load hypothesis and incidental L2 vocabulary acquisition | 第21-23页 |
| ·The input frequency hypothesis and incidental L2 vocabulary acquisition | 第23-24页 |
| ·The input-output hypothesis and incidental L2 vocabulary acquisition | 第24-26页 |
| ·Empirical studies on incidental L2 vocabulary acquisition | 第26-29页 |
| ·Research on incidental L2 vocabulary acquisition through reading | 第26-27页 |
| ·Research on incidental L2 vocabulary acquisition through listening | 第27-29页 |
| ·Limitations in the previous studies on L2 vocabulary acquisition | 第29-32页 |
| Chapter Three METHODOLODY | 第32-42页 |
| ·Research questions | 第32页 |
| ·Experimental design | 第32-33页 |
| ·Subjects | 第33-35页 |
| ·Instruments | 第35-39页 |
| ·Listening material and tasks | 第35-36页 |
| ·Target words | 第36-37页 |
| ·L2 vocabulary acquisition test | 第37-39页 |
| ·Procedure of data collection | 第39-40页 |
| ·Scoring methods | 第40页 |
| ·Interrater agreement and data analysis | 第40-42页 |
| Chapter Four RESULTS and DISCUSSIONS | 第42-64页 |
| ·Results | 第42-55页 |
| ·The influence of input frequency, task type and lexical item type onL2 receptive vocabulary acquisition | 第42-48页 |
| ·Descriptive statistics for L2 receptive vocabulary acquisition | 第42-45页 |
| ·A mixed ANOVA for L2 receptive vocabulary acquisition | 第45-48页 |
| ·Assumptions of a mixed ANOVA | 第45-46页 |
| ·A mixed ANOVA of L2 receptive vocabulary acquisition | 第46-47页 |
| ·Interaction between input frequency and task type onL2 receptive vocabulary acquisition | 第47-48页 |
| ·The influence of input frequency, task type and lexical item type onL2 productive vocabulary acquisition | 第48-55页 |
| ·Descriptive statistics for L2 productive vocabulary acquisition | 第49-51页 |
| ·A mixed ANOVA for L2 productive vocabulary acquisition | 第51-55页 |
| ·Assumptions of a mixed ANOVA | 第51-52页 |
| ·A mixed ANOVA of L2 productive vocabulary acquisition | 第52-54页 |
| ·Interaction between input frequency and task type onL2 productive vocabulary acquisition | 第54-55页 |
| ·Discussions | 第55-64页 |
| ·Main effect of lexical item type on incidental L2 vocabulary acquisition | 第55-57页 |
| ·Main effect of task type on incidental L2 vocabulary acquisition | 第57-59页 |
| ·Main effect of input frequency on incidental L2 vocabulary acquisition | 第59-60页 |
| ·The interaction of input frequency and task type onincidental L2 vocabulary acquisition | 第60-64页 |
| Chapter Five CONCLUSIONS | 第64-70页 |
| ·Major findings | 第64-65页 |
| ·Implications | 第65-67页 |
| ·Theoretical implications | 第65-66页 |
| ·Pedagogical implications | 第66-67页 |
| ·Limitations and suggestions | 第67-70页 |
| REFERENCES | 第70-80页 |
| Appendix I Listening Materials | 第80-82页 |
| Appendix II L2 Listening Vocabulary Acquisition Tasks | 第82-86页 |
| Appendix III A Vocabulary List | 第86-87页 |
| Appendix IV The Immediate Test of L2 Vocabulary Acquisition | 第87-90页 |
