| Declaration | 第1-4页 |
| Acknowledgement | 第4-5页 |
| Abstract | 第5-6页 |
| Chinese abstract | 第6-9页 |
| Chapter One Introduction | 第9-16页 |
| ·Background Information | 第9-10页 |
| ·Significance | 第10-11页 |
| ·Definition | 第11-14页 |
| ·Definition of public speaking | 第11-12页 |
| ·Definition of impromptu speech | 第12-14页 |
| ·Research design | 第14页 |
| ·Data Collection | 第14-15页 |
| ·Organization of the dissertation | 第15-16页 |
| Chapter Two Literature Review | 第16-20页 |
| ·Studies of impromptu speeches | 第16-18页 |
| ·Applications of genre analysis | 第18-20页 |
| Chapter Three Theoretical Framework | 第20-24页 |
| ·Move | 第20-21页 |
| ·Swales' move-step model | 第21-22页 |
| ·Bhatia's model | 第22页 |
| ·Hasan's generic structure potential (GSP) model | 第22-24页 |
| Chapter Four A Genre-Based Research of Impromptu Speeches in English Speaking Competitions | 第24-53页 |
| ·A move analysis of impromptu speeches | 第24-51页 |
| ·The impromptu speech as a sub-genre and its communicative purposes | 第24-26页 |
| ·Situating the impromptu speech in the genre colony of public speaking | 第24-25页 |
| ·The communicative purposes of the impromptu speech | 第25-26页 |
| ·Topics of impromptu speeches | 第26-27页 |
| ·Questions of impromptu speeches | 第27-28页 |
| ·Impromptu speeches with closed question | 第27-28页 |
| ·Impromptu speeches with open question | 第28页 |
| ·Sample analysis of the successful impromptu speeches | 第28-51页 |
| ·A sample analysis of a successful impromptu speech with closed question | 第29-33页 |
| ·A sample analysis of a successful impromptu speech with open question | 第33-37页 |
| ·A sample analysis of successful impromptu speeches with mixed question | 第37-42页 |
| ·The moves identified for the successful impromptu speeches on corpus | 第42-48页 |
| ·Explanation of the speakers' choices of obligatory moves | 第48-49页 |
| ·Explanation of the speaker's choices of optional moves | 第49-50页 |
| ·Explanation of some impromptu speeches | 第50-51页 |
| ·A GSP of the successful impromptu speeches | 第51-53页 |
| Chapter Five Conclusion | 第53-57页 |
| ·Summary of the findings | 第53-54页 |
| ·Genre-based approach to the direction of how to deliver the impromptu speeches in English speaking competitions | 第54-55页 |
| ·Limitations of the research | 第55页 |
| ·Prospects for future research | 第55-57页 |
| References: | 第57-59页 |
| APPendix | 第59-74页 |
