| Acknowledgements | 第1-4页 |
| Abstract: | 第4-8页 |
| Chapter one Introduction | 第8-11页 |
| 1．1 the background of this study | 第8-10页 |
| 1．2 The goals of the present study | 第10页 |
| 1．3 Organization of the thesis | 第10-11页 |
| Chapter two review of the literature | 第11-30页 |
| 2．1 Theoretical concepts associated with incidental learning | 第11-22页 |
| 2．1．1． Implicit and explicit second language vocabulary learning | 第11-13页 |
| 2．1．2．Definition of incidental vocabulary acquisition | 第13-14页 |
| 2．1．3 Incidental/intentional learning | 第14-19页 |
| 2．1．4 Depth-of-processing (dop) hypothesis | 第19-22页 |
| 2．2 Empirical research on incidental vocabulary acquisition | 第22-25页 |
| 2．3 The involvement load hypothesis | 第25-30页 |
| Chapter three methodology | 第30-40页 |
| 3．1 The goals of the present study | 第30-31页 |
| 3．2 Method | 第31-38页 |
| 3．2．1 Participants | 第31-32页 |
| 3．2．2 Instruments | 第32-34页 |
| 3．2．2．1 The target words | 第32-33页 |
| 3．2．2．2 The reading text | 第33页 |
| 3．2．2．3 The posttests | 第33-34页 |
| 3．2．3 The tasks | 第34-36页 |
| 3．2．4 Procedures | 第36-38页 |
| 3．2．5 Data analysis | 第38页 |
| 3．3 The predictions | 第38-40页 |
| Chapter four results and discussion | 第40-51页 |
| 4．1 Results and discussion of research question 1 | 第40-45页 |
| 4．1．1 Results | 第40-44页 |
| 4．1．2 Discussion | 第44-45页 |
| 4．2 Results and discussion of research question 2 | 第45-51页 |
| 4．2．1． Results | 第46-48页 |
| 4．2．1．1． Is there any relationship between participants' nmet performance and vocabulary retention in the incidental-learning context? | 第46页 |
| 4．2．1．2． Is there any relationship between the participants' present vocabulary size and vocabulary retention in the incidental-learning context ? | 第46-47页 |
| 4．2．1．3． Is there any relationship between the performance of the immediate posttest and the delayed posttest? | 第47-48页 |
| 4．2．2． Discussion | 第48-51页 |
| Chapter Five Conclusions | 第51-55页 |
| 5．1 Summary of the findings | 第51-52页 |
| 5．2． Implications | 第52-53页 |
| 5．3． Limitations of the study and suggestions for future studies | 第53-55页 |
| Bibliography | 第55-62页 |
| Appendix | 第62-74页 |
| Appendix A Reading Text | 第62-64页 |
| Appendix B | 第64-65页 |
| Appendix C | 第65-66页 |
| Appendix D | 第66-68页 |
| Appendix E | 第68-70页 |
| Appendix F | 第70-72页 |
| Appendix G | 第72-74页 |
