| Acknowledgements | 第1-8页 |
| Abstract (English) | 第8-11页 |
| Abstract (Chinese) | 第11-13页 |
| List of tables | 第13-14页 |
| Chapter one Introduction | 第14-20页 |
| ·Background of the research | 第14-15页 |
| ·Research questions | 第15-18页 |
| ·Contents of the thesis | 第18-20页 |
| Chapter two Literature review | 第20-40页 |
| ·Studies on orality | 第20-30页 |
| ·Nature of orality | 第20-22页 |
| ·Functional characteristics of conversation | 第22-25页 |
| ·Typical formal features of conversation | 第25-30页 |
| ·Studies on authenticity of EFL coursebook dialogues | 第30-38页 |
| ·Investigations on authenticity of EFL coursebook dialogues | 第30-34页 |
| ·Arguments on authenticity of EFL coursebook dialogues | 第34-38页 |
| ·Feasibility of the present study | 第38-40页 |
| Chapter three Analytic framework | 第40-54页 |
| ·Research design | 第40-42页 |
| ·Methods and procedures | 第42-54页 |
| ·Constructing a mini-corpus | 第42-46页 |
| ·Constructing a list of typical oral features as searchable items | 第46-49页 |
| ·Retrieving specified typical oral features | 第49-51页 |
| ·Interpreting the results of retrieval | 第51-54页 |
| Chapter four Results and discussion | 第54-102页 |
| ·Frequency distribution of oral features in CH-CD and CCEC-CD | 第54-75页 |
| ·Shared features between CH-CD and CCEC-CD | 第58-60页 |
| ·Distinguishing features between CH-CD and CCEC-CD | 第60-75页 |
| ·Overused features in CH-CD | 第60-64页 |
| ·Underused features in CH-CD | 第64-75页 |
| ·Functional analysis on distinguishing features | 第75-102页 |
| ·General analysis on distinguishing features | 第76-91页 |
| ·Reflecting shared context | 第76-79页 |
| ·Reflecting low elaboration or low specification | 第79-81页 |
| ·Reflecting interactiveness | 第81-84页 |
| ·Reflecting affectivity and attitude | 第84-86页 |
| ·Reflecting real-time processing | 第86-89页 |
| ·Reflecting restricted and repetitive repertoire | 第89-91页 |
| ·Case study on Inserts | 第91-102页 |
| ·Reflecting emotion | 第94页 |
| ·Reflecting politeness | 第94-95页 |
| ·Reflecting real-time processing | 第95-96页 |
| ·Reflecting transitional and interactive relationship | 第96-102页 |
| Chapter five Conclusions and implications | 第102-109页 |
| ·Conclusions | 第102-105页 |
| ·Implications | 第105-108页 |
| ·Limitations | 第108-109页 |
| Bibliography | 第109-113页 |
| Appendices | 第113-118页 |
| Appendix I Extract of GoTagger tagged and coded text | 第113-115页 |
| Appendix II The searchable language forms of each feature category | 第115-118页 |
