| Abstract | 第4-5页 |
| 摘要 | 第6-10页 |
| Chapter One Introduction | 第10-14页 |
| 1.1 Background of the Study | 第10-12页 |
| 1.2 Purpose and Significance of the Study | 第12-13页 |
| 1.3 Structure of the Thesis | 第13-14页 |
| Chapter Two Literature Review | 第14-27页 |
| 2.1 Definition of Hedging | 第14-16页 |
| 2.2 Taxonomy of Hedges | 第16-22页 |
| 2.2.1 Taxonomy of Hedges Abroad | 第16-20页 |
| 2.2.2 Taxonomy of Hedges at Home | 第20-22页 |
| 2.3 Empirical Comparative Studies of Hedges in Research Articles | 第22-27页 |
| 2.3.1 Empirical Comparative Studies of Hedges in Research Articles Abroad | 第22-24页 |
| 2.3.2 Empirical Comparative Studies of Hedges in Research Articles at Home | 第24-27页 |
| Chapter Three Methodology | 第27-36页 |
| 3.1 Research Questions | 第27-28页 |
| 3.2 Data Collection | 第28-31页 |
| 3.3 Criteria for Indentifying Hedges | 第31-35页 |
| 3.4 Data Analysis | 第35-36页 |
| Chapter Four Results and Discussion | 第36-60页 |
| 4.1 Frequency Features of Hedges in the Two Corpora | 第36-48页 |
| 4.1.1 Overall Frequency of Hedges in the Two Corpora | 第36-37页 |
| 4.1.2 Frequency of Five Categories of Hedges in the Two Corpora | 第37-48页 |
| 4.2 Distribution Patterns of Hedges in the Two Corpora | 第48-50页 |
| 4.3 Similarities of Hedges in the Two Corpora | 第50-51页 |
| 4.3.1 Similarities of Frequency Features of Hedges in the Two Corpora | 第50页 |
| 4.3.2 Similarities of Distribution Patterns of Hedges in the Two Corpora | 第50-51页 |
| 4.4 Differences of Hedges between the Two Corpora | 第51-52页 |
| 4.4.1 Differences of Frequency Features of Hedges between the Two Corpora | 第51页 |
| 4.4.2 Differences of Distribution Patterns of Hedges between the Two Corpora | 第51-52页 |
| 4.5 Discussion of the Similarities and Differences of Hedges between the Two Corpora | 第52-60页 |
| 4.5.1 Discussion of the Similarities of Hedges in the Two Corpora | 第52-53页 |
| 4.5.2 Discussion of the Differences of Hedges between the Two Corpora | 第53-60页 |
| Chapter Five Conclusion | 第60-63页 |
| 5.1 Major Findings | 第60-61页 |
| 5.2 Implications of the Study | 第61-62页 |
| 5.3 Limitations and Suggestions for Further Studies | 第62-63页 |
| References | 第63-69页 |
| Acknowledgements | 第69-70页 |
| Appendix | 第70-80页 |
