| Acknowledgements | 第1-4页 |
| English Abstract | 第4-7页 |
| Chinese Abstract | 第7-9页 |
| Table of Content | 第9-12页 |
| Chapter One Introduction | 第12-16页 |
| ·Incidental vocabulary learning:An overview | 第12页 |
| ·Research background | 第12-14页 |
| ·The objective and the significance of the present study | 第14-15页 |
| ·Outline of the present study | 第15-16页 |
| Chapter Two Review of Related Literature | 第16-37页 |
| ·Overview | 第16页 |
| ·Explicit-implicit Distinction | 第16-23页 |
| ·Explicit/implicit knowledge,instruction and learning | 第16-19页 |
| ·Explicit-implicit learning:The cognitive view vs.the linguistic view | 第19-20页 |
| ·Explicit/implicit distinction in vocabulary learning | 第20-21页 |
| ·Empirical studies on explicit/implicit learning | 第21-23页 |
| ·Intentional and incidental learning | 第23-28页 |
| ·Meaning of intentional and incident learning | 第23-25页 |
| ·Operational meaning | 第23-24页 |
| ·Theoretical meaning | 第24-25页 |
| ·Intentional and incidental learning in cognitive psychology:Depth of processing | 第25-28页 |
| ·Relevant Empirical Research on incidental vocabulary learning | 第28-32页 |
| ·The Involvement Load Hypothesis | 第32-37页 |
| ·The three involvement components | 第32-33页 |
| ·Involvement indices | 第33-37页 |
| Chapter Three Research Design and Methodology | 第37-54页 |
| ·Overview | 第37页 |
| ·Research questions | 第37-38页 |
| ·Participants | 第38-39页 |
| ·Target words | 第39-41页 |
| ·Reading materials | 第41-42页 |
| ·Tasks | 第42-44页 |
| ·Instruments | 第44-48页 |
| ·Posttests | 第44-46页 |
| ·Vocabulary Level Test | 第46-48页 |
| ·Procedure | 第48页 |
| ·Scoring | 第48-52页 |
| ·Data analysis | 第52-54页 |
| Chapter Four Results and Discussion | 第54-84页 |
| ·Overview | 第54页 |
| ·Results of the study | 第54-71页 |
| ·The results for Research Question 1 | 第54-59页 |
| ·The results of the immediate posttest | 第54-56页 |
| ·The results of delayed posttest | 第56-57页 |
| ·Comparison between two posttests | 第57-59页 |
| ·Result for Research Question2 | 第59-65页 |
| ·The results of immediate productive vocabulary posttest | 第60-61页 |
| ·The results of delayed productive vocabulary posttest | 第61-62页 |
| ·Comparison between immediate and delayed productive vocabulary posttests | 第62-65页 |
| ·The results for Research Question 3 | 第65-69页 |
| ·The results in the immediate posttest | 第65-66页 |
| ·The results in the delayed posttest | 第66页 |
| ·A comparison between the two posttests in terms of vocabulary level | 第66-67页 |
| ·The results in the receptive vocabulary tests | 第67-68页 |
| ·The results in the productive vocabulary test | 第68-69页 |
| ·The interrelation of the factors | 第69-71页 |
| ·Discussion | 第71-84页 |
| ·Overview | 第71-72页 |
| ·Cause to negative evidence for ILH | 第72-76页 |
| ·Characteristics of the tasks | 第73-74页 |
| ·Competition for attentional resources | 第74-76页 |
| ·From text level to word level:the active role on the learner's part | 第76-81页 |
| ·The relation of vocabulary level to incidental vocabulary learning | 第81-84页 |
| Chapter Five Conclusion | 第84-92页 |
| ·Overview | 第84页 |
| ·The limitations of the study | 第84-86页 |
| ·Theoretical implications | 第86-87页 |
| ·Pedagogical implications | 第87-89页 |
| ·Directions for future research | 第89-90页 |
| ·Conclusion | 第90-92页 |
| Bibliography | 第92-101页 |
| Appendix 1 | 第101-103页 |
| Appendix 2 | 第103-105页 |
| Appendix 3 | 第105-107页 |
| Appendix 4 | 第107-110页 |
| Appendix 5 | 第110-115页 |
