| ABSTRACT | 第1-14页 |
| TABLE OF CONTENTS | 第14-16页 |
| LIST OF ABBREVIATIONS | 第16-17页 |
| LIST OF TABLES | 第17-18页 |
| Chapter I INTRODUCTION | 第18-21页 |
| Chapter II LITERATURE REVIEW | 第21-36页 |
| ·Concept of genre | 第21-22页 |
| ·Genre analysis and ESP genre analysis | 第22-23页 |
| ·English RAs in ESP genre analysis | 第23-24页 |
| ·Previous genre studies on English RAs | 第24-36页 |
| ·Previous analysis of structure of RAs as a whole | 第25-26页 |
| ·Previous analysis of microstructure of discussion sections | 第26-30页 |
| ·Previous studies of comparative analysis of RAs written by native speakers (NSs) and non-native speakers (NNSs) | 第30-32页 |
| ·Previous analysis of hedging | 第32-36页 |
| Chapter III METHODOLOGY | 第36-42页 |
| ·Research design | 第36-37页 |
| ·Pretest | 第37页 |
| ·Identification of source journals | 第37-38页 |
| ·Source journals for CCMW | 第37-38页 |
| ·Source journals for CNESMW | 第38页 |
| ·Establishment of two corpora | 第38-39页 |
| ·Method of analysis | 第39-42页 |
| ·Analyzing microstructure of discussion sections in two corpora | 第39-40页 |
| ·Analyzing hedging devices in two corpora | 第40-42页 |
| Chapter IV RESULTS AND DISCUSSION | 第42-54页 |
| ·Results of analysis of structure | 第42-50页 |
| ·Background Information (Move 1) | 第45-46页 |
| ·Restating Objective or Methods (Move 2) | 第46页 |
| ·Explaining Specific Research Outcome (Move 3) | 第46-48页 |
| ·Reference to Previous Research for Support (Move 4) | 第48-49页 |
| ·Stating Research Conclusion (Move 5) | 第49-50页 |
| ·Cyclic patterns present in discussion sections in two corpora | 第50页 |
| 4. 2 Hedging devices in discussion sections in two corpora | 第50-54页 |
| ·Epistemic Modal Auxiliaries | 第52页 |
| ·Epistemic Main Verbs | 第52页 |
| ·Epistemic Adverbs | 第52-53页 |
| ·Epistemic Adjectives | 第53页 |
| ·Epistemic Nouns | 第53-54页 |
| Chapter V CONCLUSION | 第54-56页 |
| ·Major findings | 第54页 |
| ·Pedagogical implications | 第54-55页 |
| ·Limitations and further research | 第55-56页 |
| BIBLIOGRAPHY | 第56-60页 |
| NOTES AND QUOTATIONS | 第60-62页 |
| APPENDIXES | 第62-68页 |
| CURRICULUM VITAE AND PUBLICATIONS | 第68-69页 |
| ACKNOWLEDGEMENTS | 第69页 |
