| Acknowledgements | 第6-7页 |
| 摘要 | 第7-8页 |
| Abstract | 第8页 |
| Chapter One Introduction | 第11-14页 |
| 1.1 Background of the Study | 第11-12页 |
| 1.2 Significance of the Study | 第12-13页 |
| 1.3 Organization of the Thesis | 第13-14页 |
| Chapter Two Literature Review | 第14-24页 |
| 2.1 Massive Open Online Courses (MOOCs) | 第14-19页 |
| 2.1.1 Definition of MOOCs | 第14-15页 |
| 2.1.2 Definition of MOOECs(Massive Open Online English Courses) | 第15页 |
| 2.1.3 Previous Studies on MOOCs | 第15-19页 |
| 2.2 Multimodal Discourse Analysis (MDA) | 第19-23页 |
| 2.2.1 Definition of MDA | 第19-20页 |
| 2.2.2 Previous Studies on MDA | 第20-23页 |
| 2.3 Summary | 第23-24页 |
| Chapter Three Theoretical Framework | 第24-32页 |
| 3.1 Theoretical Foundation | 第24-29页 |
| 3.1.1 Systemic Functional Approach to MDA | 第24页 |
| 3.1.2 Lim's Integrative Multi-semiotic Model (IMM) | 第24-26页 |
| 3.1.3 Zhang's Synthetic Theoretical Framework of MDA | 第26-27页 |
| 3.1.4 Kress and van Leeuwen's Metafunctional Framework | 第27-29页 |
| 3.2 A Framework for the Multimodal Discourse Analysis of MOOECs | 第29-31页 |
| 3.3 Summary | 第31-32页 |
| Chapter Four Constructing a Multimodal Corpus of MOOECs Based on Elan | 第32-40页 |
| 4.1 A General Introduction to Multimodal Corpus and the Software Elan | 第32页 |
| 4.2 Source of Corpus | 第32-35页 |
| 4.3 Process of Constructing Multimodal Corpus of MOOECs | 第35-39页 |
| 4.4 Summary | 第39-40页 |
| Chapter five A Multimodal Discourse Analysis of MOOECs with the ProposedModel | 第40-64页 |
| 5.1 Quantitative Analysis of Semiotic Modes Used in MOOECs | 第40-45页 |
| 5.1.1 Overall Annotation Occurrence of Semiotic Modes | 第40-42页 |
| 5.1.2 Distribution of Semiotic Modes in Different Teaching Phases | 第42-45页 |
| 5.2 Analysis of the Meta-functions Presented by Multimodal Teaching of MOOECs | 第45-58页 |
| 5.2.1 The Representational Meaning of Multimodal Teaching | 第45-49页 |
| 5.2.2 The Interactive Meaning of Multimodal Teaching | 第49-54页 |
| 5.2.3 The Compositional Meaning of Multimodal Teaching | 第54-58页 |
| 5.3 Analysis of Modality Relations in MOOECs | 第58-63页 |
| 5.3.1 Mode Groups in MOOECs | 第58页 |
| 5.3.2 Analysis of the Mode Relations | 第58-63页 |
| 5.4 Summary | 第63-64页 |
| Chapter Six Conclusion | 第64-67页 |
| 6.1 Findings and Implications of the study | 第64-65页 |
| 6.2 Limitations and Suggestions for Further Research | 第65-67页 |
| References | 第67-73页 |
