| ABSTRACT | 第1-5页 |
| 摘要 | 第5-11页 |
| Chapter One Introduction | 第11-19页 |
| ·Rationale of the study | 第11-13页 |
| ·Significance of the study | 第13-15页 |
| ·Research questions | 第15页 |
| ·Methods of the Study | 第15-16页 |
| ·Organization of the thesis | 第16-17页 |
| ·Summary | 第17-19页 |
| Chapter Two Literature Review | 第19-35页 |
| ·The previous research on author presence | 第19-22页 |
| ·The previous research on the use of the passive voice | 第22-29页 |
| ·Studies in the frequency and functions | 第22-26页 |
| ·Corpus used | 第26-29页 |
| ·Research on the use of personal pronouns | 第29-32页 |
| ·Discourse functions of FPPs | 第29-31页 |
| ·The use of personal pronouns across disciplines and cultures | 第31-32页 |
| ·The reasons to choose the first person plural pronouns“we” | 第32页 |
| ·The focus of the present study | 第32-35页 |
| Chapter Three Methodology | 第35-45页 |
| ·Aims and goals | 第35页 |
| ·Data collection | 第35-38页 |
| ·Corpus Cleaning and Annotation | 第38-39页 |
| ·Tools used and their functions | 第39-40页 |
| ·Data extraction and data analysis | 第40-43页 |
| ·Categories of the discourse functions | 第43-44页 |
| ·Summary | 第44-45页 |
| Chapter Four Results and Discussion | 第45-65页 |
| ·Overall frequency of use of personal and impersonal authorial presence | 第45-48页 |
| ·Overall frequency of passives in RAs by NES and NNES | 第46-47页 |
| ·Overall frequencies of FPPs in RAs by NES and NNES | 第47-48页 |
| ·Discussion on the overall frequency | 第48页 |
| ·Frequency in each rhetoric section of RAs by NES and NNES | 第48-56页 |
| ·Distribution of passives in each rhetoric section of RAs by NES and NNES | 第49-52页 |
| ·Distribution of FPPs in each rhetoric section of RAs by NES and NNES | 第52-54页 |
| ·Discussion on the frequencies in different rhetoric sections | 第54-56页 |
| ·Functional analysis | 第56-62页 |
| ·Functions of the use of passives | 第56-58页 |
| ·Functions of the use of FPPs | 第58-60页 |
| ·Analysis of the discourse functions of FPPs and passives | 第60-62页 |
| ·Potential reasons for the differences | 第62-63页 |
| ·Summary | 第63-65页 |
| Chapter Five Conclusion | 第65-71页 |
| ·Major findings | 第65-66页 |
| ·Pedagogical Implications | 第66-68页 |
| ·Limitations of this study | 第68页 |
| ·Implications for Further Research | 第68-69页 |
| ·Summary | 第69-71页 |
| BIBLIOGRAPHY | 第71-81页 |
| APPENDIX | 第81-87页 |
| ACKNOWLEDGEMENTS | 第87-89页 |
| PUBLISHED PAPERS | 第89页 |
