| ACKNOWLEDGEMENTS | 第8-9页 |
| ABSTRACT | 第9页 |
| 中文摘要 | 第10-15页 |
| CHAPTERⅠINTRODUCTION | 第15-21页 |
| 1.1 Research Background | 第15-17页 |
| 1.2 Significance of the Present Study | 第17-18页 |
| 1.3 Definitions of Key Terms | 第18-19页 |
| 1.4 Organization of the Present Study | 第19-21页 |
| CHAPTER Ⅱ LITERATURE REVIEW | 第21-31页 |
| 2.1 Modes of Vocabulary Learning | 第21-24页 |
| 2.1.1 Incidental and Intentional Vocabulary Learning | 第21-22页 |
| 2.1.2 Implicit and Explicit Vocabulary Learning | 第22-23页 |
| 2.1.3 Distinctions between the Three Modes of Vocabulary Learning | 第23-24页 |
| 2.2 Theoretical Basis of the Present Study | 第24-26页 |
| 2.2.1 Comprehensible Input Hypothesis | 第24页 |
| 2.2.2 Noticing Hypothesis | 第24-25页 |
| 2.2.3 Mental Effort and Depth of Processing | 第25-26页 |
| 2.3 Studies on Effect of Exposure Frequency on Incidental Vocabulary Acquisition | 第26-27页 |
| 2.4 Studies on Effect of Learner’s Vocabulary Size on Incidental Vocabulary Acquisition | 第27-28页 |
| 2.5 Studies on Effect of Grammatical Categories on Incidental Vocabulary Acquisition | 第28-29页 |
| 2.6 Research Questions | 第29-31页 |
| CHAPTER Ⅲ RESEARCH METHODOLOGY | 第31-39页 |
| 3.1 Overview | 第31页 |
| 3.2 Research Design | 第31-36页 |
| 3.2.1 Subjects | 第31-32页 |
| 3.2.2 Reading Materials | 第32-33页 |
| 3.2.3 Target Words | 第33-34页 |
| 3.2.4 Vocabulary Tests | 第34-36页 |
| 3.3 Research Procedures | 第36-37页 |
| 3.4 Scoring Data | 第37-38页 |
| 3.5 Data Analysis | 第38-39页 |
| CHAPTER Ⅳ RESULTS | 第39-55页 |
| 4.1 Effect of Exposure Frequency on Incidental Vocabulary Acquisition | 第39-43页 |
| 4.1.1 Correlation between Exposure Frequency and Vocabulary Acquisition | 第39-40页 |
| 4.1.2 Effect of Different Exposure Frequencies on Vocabulary Acquisition | 第40-43页 |
| 4.2 Effect of Learners’Vocabulary Size on Incidental Vocabulary Acquisition | 第43-48页 |
| 4.3 Effect of Parts of Speech on Incidental Vocabulary Acquisition | 第48-52页 |
| 4.4 The Interactive Role of Exposure Frequency, Vocabulary Size and Parts of Speech on Incidental Vocabulary Acquisition | 第52-55页 |
| CHAPTER Ⅴ DISCUSSION | 第55-59页 |
| 5.1 Discussion of Effect of Exposure Frequency of the Target Words | 第55-56页 |
| 5.2 Discussion of Effect of Learners’Vocabulary Size | 第56-57页 |
| 5.3 Discussion of Effect of Parts of Speech | 第57页 |
| 5.4 Discussion of the Interactive Role of Frequency, Vocabulary Size and Parts of Speech in Vocabulary Acquisition | 第57-59页 |
| CHAPTER Ⅵ CONCLUSIONS | 第59-63页 |
| 6.1 Conclusions from the Present Study | 第59-60页 |
| 6.2 Pedagogical Implications | 第60-61页 |
| 6.3 Limitations of the Present Study and Suggestions for Future Research | 第61-63页 |
| REFERENCES | 第63-70页 |
| APPENDIX 1 | 第70-74页 |
| APPENDIX 2 | 第74-80页 |
| APPENDIX 3 | 第80-81页 |
| APPENDIX 4 | 第81-82页 |
| APPENDIX 5 | 第82-83页 |
