| 摘要 | 第4-6页 |
| Abstract | 第6-7页 |
| Chapter One Introduction | 第10-14页 |
| 1.1 The Background of the Thesis | 第10-11页 |
| 1.2 The Objectives and Significance of the Thesis | 第11-12页 |
| 1.3 The Organization of the Thesis | 第12-14页 |
| Chapter Two Literature Review | 第14-29页 |
| 2.1 Theoretical Researches on Hedges | 第14-18页 |
| 2.1.1 Definition of Hedges | 第15-16页 |
| 2.1.2 Classifications of Hedges | 第16-18页 |
| 2.2 Previous Studies on Hedges | 第18-24页 |
| 2.2.1 Previous Studies on Hedges Abroad | 第18-22页 |
| 2.2.2 Previous Studies on Hedges in China | 第22-24页 |
| 2.2.3 Summary | 第24页 |
| 2.3 Previous Studies on Research Articles | 第24-29页 |
| 2.3.1 Previous Studies on Research Articles abroad | 第25-26页 |
| 2.3.2 Previous Studies on Research Articles in China | 第26-28页 |
| 2.3.3 Summary | 第28-29页 |
| Chapter Three Methodology | 第29-34页 |
| 3.1 Research Questions | 第29页 |
| 3.2 Data Collection | 第29-30页 |
| 3.3 Data Processing | 第30-34页 |
| Chapter Four Results and Discussion | 第34-60页 |
| 4.1 Overall Frequency and Distribution of Hedging Strategies in Research Articles in SSand PS | 第34-39页 |
| 4.1.1 Overall Frequency and Distribution of Hedging Strategies in Research Articles inSS and PS | 第34-36页 |
| 4.1.2 Discussion of the Results | 第36-39页 |
| 4.1.3 Summery | 第39页 |
| 4.2 Frequency and Distribution of Hedging Strategies in Four Moves of Research Articlesin SS and PS | 第39-58页 |
| 4.2.1 Frequency and Distribution of Hedging Strategies in Introduction Move ofResearch Articles in SS and PS | 第40-45页 |
| 4.2.2 Frequency and Distribution of Hedging Strategies in Method Move of ResearchArticles in SS and PS | 第45-49页 |
| 4.2.3 Frequency and Distribution of Hedging Strategies in Result Move of ResearchArticles in SS and PS | 第49-54页 |
| 4.2.4 Frequency and Distribution of Hedging Strategies in Discussion Move of ResearchArticles in SS and PS | 第54-58页 |
| 4.3 Summary | 第58-60页 |
| Chapter Five Conclusion | 第60-64页 |
| 5.1 Major Findings | 第60-62页 |
| 5.1.1 Similarities in Frequency and Distribution of Hedging Strategies between SS andPS | 第60-61页 |
| 5.1.2 Differences in Frequency and Distribution of Hedging Strategies between SS andPS | 第61-62页 |
| 5.2 Implications | 第62-63页 |
| 5.3 Limitations | 第63-64页 |
| References | 第64-71页 |
| Appendix | 第71-72页 |
| 攻读学位期间取得的研究成果 | 第72-73页 |
| Acknowledgement | 第73页 |
