| Abstract | 第8-9页 |
| 摘要 | 第10-15页 |
| Chapter 1 Introduction | 第15-19页 |
| 1.1 Background of the Study | 第15-17页 |
| 1.2 Purposes and Significance of the Study | 第17-19页 |
| Chapter 2 Literature Review | 第19-28页 |
| 2.1 Input Frequency’s Effect on Discourse Comprehension and Vocabulary Learning at abroad and home | 第19-25页 |
| 2.2 Modality’s Effect on Discourse Comprehension and Vocabulary Acquisition at abroad and home11 | 第25-28页 |
| Chapter 3 Theoretical Bases | 第28-32页 |
| 3.1 Dynamic Systems Theory | 第28-29页 |
| 3.2 Information Processing Theory | 第29-32页 |
| Chapter 4 Methodology | 第32-40页 |
| 4.1 Research Questions | 第32页 |
| 4.2 Participants | 第32页 |
| 4.3 Instruments | 第32-36页 |
| 4.3.1 PPT of Presenting Audio -Visual Modality | 第32-33页 |
| 4.3.2 PPT of Presenting Audio Modality | 第33页 |
| 4.3.3 PPT of Presenting Visual Modality | 第33页 |
| 4.3.4 Tests of Discourse Comprehension | 第33页 |
| 4.3.5 Tests of Target Words Under Visual Modality | 第33-34页 |
| 4.3.6 Tests of Target Words Under Audio Modality | 第34-35页 |
| 4.3.7 Tests of Target Words Under Audio-Visual Modality | 第35页 |
| 4.3.8 Microgenetic Method | 第35-36页 |
| 4.4 Procedures | 第36-37页 |
| 4.5 Data Collection | 第37-40页 |
| 4.5.1 Data Collection of Discourse Comprehension | 第37页 |
| 4.5.2 Data Collection of Vocabulary Learning | 第37-39页 |
| 4.5.3 Data Collection of Comparison between Discourse Comprehension and Vocabulary Learning | 第39-40页 |
| Chapter 5 Results and Discussions | 第40-59页 |
| 5.1 The Influence of Input Frequency on Discourse Comprehension of Second Language Learners under Different Input Modalities | 第40-49页 |
| 5.2 The Influence of Input Frequency on Vocabulary Acquisition | 第49-55页 |
| 5.3 The Comparisons between Discourse Comprehension and Vocabulary Acquisition | 第55-59页 |
| Chapter 6 Conclusion | 第59-63页 |
| 6.1 Conclusion | 第59-60页 |
| 6.2 Implications | 第60-61页 |
| 6.3 Limitations | 第61-63页 |
| References | 第63-69页 |
| Appendix I English Transcript | 第69-71页 |
| Appendix Ⅱ PPT of Presenting Audio-visual Modality | 第71-72页 |
| Appendix Ⅲ PPT of Presenting Visual Modality | 第72-73页 |
| Appendix Ⅳ Tests of Discourse Comprehension | 第73-75页 |
| Appendix Ⅴ Vocabulary Knowledge Table | 第75-77页 |
| Appendix Ⅵ Target Words Test under Visual Modality | 第77-81页 |
| Appendix Ⅶ Target Words Test under Audio Modality | 第81-85页 |
| Appendix Ⅷ Target Words Test under Audio-Visual Modality | 第85-89页 |
| Acknowledgements | 第89页 |
