| Acknowledgements | 第6-7页 |
| Abstract | 第7-8页 |
| 摘要 | 第9-14页 |
| List of Abbreviations | 第14-15页 |
| Chapter One Introduction | 第15-19页 |
| 1.1 Research Background | 第15-16页 |
| 1.2 Significance of the Thesis | 第16-17页 |
| 1.3 Layout of the Thesis | 第17-19页 |
| Chapter Two Literature Review | 第19-29页 |
| 2.1 Terminology and Definition of Discourse Markers (DMs) | 第19-20页 |
| 2.2 Previous Studies of DMs | 第20-25页 |
| 2.2.1 Previous Studies Abroad | 第20-22页 |
| 2.2.2 Previous Studies at Home | 第22-24页 |
| 2.2.3 Previous Studies on DMs Used in the Classroom | 第24-25页 |
| 2.3 Previous Studies of Multimodal Discourse Analysis (MDA) | 第25-29页 |
| 2.3.1 Previous Studies on MDA Abroad | 第25-26页 |
| 2.3.2 Previous Studies on MDA at Home | 第26-27页 |
| 2.3.3 Previous Studies on MDA Used in the Classroom | 第27-29页 |
| Chapter Three Theoretical Framework and Research Methodology | 第29-41页 |
| 3.1 Theoretical Framework | 第29-32页 |
| 3.1.1 Zhang Delu's Synthetic Theoretical Framework of MDA | 第29-32页 |
| 3.2 Research Methodology | 第32-41页 |
| 3.2.1 Multimodal Corpus Construction | 第32-34页 |
| 3.2.2 Research Questions | 第34页 |
| 3.2.3 Identification of Modes being Analyzed | 第34-39页 |
| 3.2.4 Research Methodology | 第39-41页 |
| Chapter Four Data Analysis | 第41-81页 |
| 4.1 A Contrastive Study of the Multimodal Usage of you know | 第41-64页 |
| 4.1.1 The Pragmatic Functions of you know | 第41-44页 |
| 4.1.2 The Distribution of Intonation and Gesture of you know | 第44-47页 |
| 4.1.3 The Differences of the Multimodal Usage of you know | 第47-52页 |
| 4.1.4 The Similarities of the Multimodal Usage of you know | 第52-64页 |
| 4.2 A Contrastive Study of the Multimodal Usage of because | 第64-81页 |
| 4.2.1 The Semantic Functions of because | 第64-67页 |
| 4.2.2 The Distribution of Intonation and Gesture of because | 第67-69页 |
| 4.2.3 The Differences of the Multimodal Usage of because | 第69-75页 |
| 4.2.4 The Similarities of the Multimodal Usage of because | 第75-81页 |
| Chapter Five Conclusions | 第81-87页 |
| 5.1 Findings and Contributions of the Present Research | 第81-84页 |
| 5.2 Limitations and Suggestions for the Further Research | 第84-87页 |
| Bibliography | 第87-94页 |
