| Acknowledgements | 第1-6页 |
| Abstract | 第6-7页 |
| 摘要 | 第7-12页 |
| Chapter One Introduction | 第12-16页 |
| ·Motivation | 第12-14页 |
| ·Purpose of the study | 第14页 |
| ·Organization of the thesis | 第14-16页 |
| Chapter Two An Overview of DMs | 第16-27页 |
| ·Past research and definitions of DMs | 第17-20页 |
| ·Basic properties of DMs | 第20-22页 |
| ·Lexical features | 第20页 |
| ·Phonological features | 第20页 |
| ·Syntactic features | 第20-21页 |
| ·Semantic features | 第21-22页 |
| ·Functional features | 第22页 |
| ·Classifications of DMs | 第22-27页 |
| Chapter Three DMs and TT in EFL Classroom | 第27-37页 |
| ·Teacher talk in EFL classroom | 第27-30页 |
| ·Definition and characteristics of TT | 第27-28页 |
| ·Researches on TT | 第28-30页 |
| ·Functions of DMs in TT | 第30-33页 |
| ·Function of constructing the classroom discourse | 第30-31页 |
| ·Function of classroom context construction | 第31-33页 |
| ·Non-native speaker English teacher | 第33-35页 |
| ·Research on non-native speaker English teacher | 第33-35页 |
| ·EFL teaching in Chinese university | 第35页 |
| ·Domestic researches & findings | 第35-37页 |
| Chapter Four Methodology and Research Design | 第37-45页 |
| ·Methodology | 第37-41页 |
| ·Theoretic basis of the research | 第37-38页 |
| ·Case study | 第38-40页 |
| ·Methodological issues | 第40-41页 |
| ·Research design | 第41-45页 |
| ·Research questions and hypotheses | 第41-42页 |
| ·Data collection | 第42-43页 |
| ·Data analysis | 第43-45页 |
| Chapter Five Results and Discussions | 第45-66页 |
| ·Major findings | 第45-49页 |
| ·DMs in the beginning & at the end of the class | 第49-50页 |
| ·Usages of DM so | 第50-66页 |
| ·Functions of DM “so”in the literature | 第50-52页 |
| ·Usage of so in TT | 第52-66页 |
| Chapter Six Conclusions | 第66-69页 |
| ·Summary of the thesis | 第66页 |
| ·EFL teaching in Chinese universities | 第66-67页 |
| ·Limitations and recommendations for further research | 第67-69页 |
| Bibliography | 第69-75页 |
