| Abstract | 第1-9页 |
| 摘要 | 第9-13页 |
| Chapter One Introduction | 第13-16页 |
| ·Objectives of the Study | 第13-14页 |
| ·Significance of the Study | 第14页 |
| ·Layout of the Study | 第14-16页 |
| Chapter Two Literature Review | 第16-27页 |
| ·Identity and identity construction | 第16-21页 |
| ·General perspective on identity and identity construction | 第16-17页 |
| ·Related studies on identity and identity construction | 第17-21页 |
| ·Academic discourse and thesis defense | 第21-24页 |
| ·Brief introduction of academic discourse and thesis defense | 第21-23页 |
| ·Previous studies of academic discourse and dissertation defense | 第23-24页 |
| ·Identity and identity construction in academic discourse | 第24-26页 |
| ·Summary | 第26-27页 |
| Chapter Three Theoretical Framework | 第27-36页 |
| ·Wenger's Communities of Practice | 第27-28页 |
| ·Verschueren's Linguistic Adaptation Theory | 第28-31页 |
| ·Language use as choice-making | 第28-29页 |
| ·Four Angles of Investigation | 第29-31页 |
| ·A working analytical framework of the present study | 第31-36页 |
| ·Thesis defense as a community of practice | 第31-33页 |
| ·The Adaptation Model for Identity Construction | 第33-36页 |
| Chapter Four Methodology | 第36-40页 |
| ·Definition of Micro pragmatic identity | 第36页 |
| ·Data collection and corpus building | 第36-38页 |
| ·Research Method | 第38-39页 |
| ·Research Procedure | 第39-40页 |
| Chapter Five Results and Analysis | 第40-66页 |
| ·Results | 第40-41页 |
| ·Analysis of defense student's identity construction | 第41-50页 |
| ·Identity as a self-effacing (modest) candidate | 第42-44页 |
| ·Identity as a researcher or originator | 第44-45页 |
| ·Identity as a guide or director | 第45-48页 |
| ·Identity as a community member | 第48-50页 |
| ·Analysis of defense teachers' identity construction | 第50-61页 |
| ·Identity as an expert | 第51-53页 |
| ·Identity as a supervisor | 第53-54页 |
| ·Identity as an examiner | 第54-56页 |
| ·Identity as a chairman of defense | 第56-57页 |
| ·Identity as a member of the academic speech community | 第57-58页 |
| ·Identity as a colleague | 第58-59页 |
| ·Identity as an outsider | 第59-60页 |
| ·Identity as an educator | 第60-61页 |
| ·Dynamic shift of micro pragmatic identities | 第61-64页 |
| ·Summary | 第64-66页 |
| Chapter Six Conclusion | 第66-69页 |
| ·Major Findings | 第66页 |
| ·Implications of this Study | 第66-67页 |
| ·Limitations of the Study | 第67-68页 |
| ·Recommendations for Future Research | 第68-69页 |
| References | 第69-75页 |
| 攻读硕士学位期间所发表的学术论文 | 第75-76页 |
| Acknowledgments | 第76页 |
