| 摘要 | 第4-6页 |
| ABSTRACT | 第6-7页 |
| Chapter 1 Introduction | 第11-14页 |
| 1.1 Research Background | 第11-12页 |
| 1.2 Purpose and Significance of the Research | 第12-13页 |
| 1.3 Layout of the Thesis | 第13-14页 |
| Chapter 2 Literature Review | 第14-26页 |
| 2.1 An Overview of Previous Studies on Hedges | 第14-19页 |
| 2.1.1 The Development of the Concept of Hedges from Logic to Pragmatics | 第14-16页 |
| 2.1.2 Classification of Hedges in Academic Writing | 第16-19页 |
| 2.1.3 Important Role of Hedges in Abstract Writing | 第19页 |
| 2.2 A Review of the Pedagogical Framework—Process-Genre Approach | 第19-26页 |
| 2.2.1 An Introduction of Product Approach,Process Approach and Genre Approach | 第20-22页 |
| 2.2.2 An Integrated Teaching Model—Process-Genre Approach | 第22-26页 |
| Chapter 3 Research Design | 第26-31页 |
| 3.1 Research Questions | 第26页 |
| 3.2 Research Site | 第26-27页 |
| 3.3 Corpus Collection | 第27-28页 |
| 3.4 The Processing of PG Approach | 第28-31页 |
| Chapter 4 Data Analysis and Discussions | 第31-53页 |
| 4.1 Overview | 第31-35页 |
| 4.1.1 Overall Frequency and Distribution of Hedges in the Two Corpora | 第32-34页 |
| 4.1.2 Most-Frequently-Used Hedges in Both Corpora | 第34-35页 |
| 4.2 Different Distributions and Frequencies of Hedges in Each Type | 第35-52页 |
| 4.2.1 Modal Verbs | 第35-41页 |
| 4.2.2 Lexical Verbs | 第41-46页 |
| 4.2.3 Epistemic Adverbs | 第46-49页 |
| 4.2.4 Epistemic Adjectives | 第49-51页 |
| 4.2.5 Epistemic Nouns | 第51-52页 |
| 4.3 Summary | 第52-53页 |
| Chapter 5 Implications | 第53-63页 |
| 5.1 An Overall Assessment on the Effect of PG Approach on Hedging Instruction | 第53-56页 |
| 5.2 Pedagogical Implications on the English Academic Writing Instruction for Non-English Postgraduates | 第56-62页 |
| 5.2.1 Scaffolding Language and Learning | 第57-58页 |
| 5.2.2 Providing Diversified Types of Feedback | 第58-59页 |
| 5.2.3 Connecting Writing Skills with Other Basic Skills | 第59-61页 |
| 5.2.4 Reorienting Teachers' Role in the Process of Writing | 第61-62页 |
| 5.3 Summary | 第62-63页 |
| Chapter 6 Conclusion | 第63-65页 |
| 6.1 summary | 第63-64页 |
| 6.2 Limitations and Suggestions for Future Studies | 第64-65页 |
| Bibliography | 第65-69页 |
| Appendix Ⅰ:An Extract of Sentences Containing Hedges in the Two Corpora | 第69-73页 |
| Appendix Ⅱ:Practices Implemented in the Training | 第73-76页 |
| Acknowledgements | 第76页 |
