| Abstract | 第1-7页 |
| 摘要 | 第7-8页 |
| List of Tables | 第8-10页 |
| Acknowledgements | 第10-11页 |
| Chapter One Introduction | 第11-15页 |
| ·Research background | 第11-12页 |
| ·Purpose and significance of the study | 第12-13页 |
| ·Layout of the thesis | 第13-15页 |
| Chapter Two Literature Review | 第15-32页 |
| ·Definitions of hedges | 第15-19页 |
| ·Lakoff's definition | 第16-17页 |
| ·Channell's definition | 第17-18页 |
| ·Hyland's definition | 第18-19页 |
| ·Classifications of hedges | 第19-25页 |
| ·Semantic classification | 第19-20页 |
| ·Grammatical classification | 第20-21页 |
| ·Prince's classification | 第21-25页 |
| ·Approximators | 第21-23页 |
| ·Shields | 第23-25页 |
| ·Researches on hedges abroad and at home | 第25-30页 |
| ·Researches on hedges abroad | 第25-27页 |
| ·Semantic research on hedges | 第25-26页 |
| ·Pragmatic research on hedges | 第26页 |
| ·Textual research on hedges | 第26-27页 |
| ·Applied research on hedges | 第27页 |
| ·Researches on hedges at home | 第27-30页 |
| ·Semantic research on hedges | 第27-28页 |
| ·Pragmatic research on hedges | 第28-29页 |
| ·Textual research on hedges | 第29页 |
| ·Applied research on hedges | 第29-30页 |
| ·Researches on classroom discourse abroad and at home | 第30-32页 |
| ·Research on classroom discourse abroad | 第30-31页 |
| ·Research on classroom discourse at home | 第31-32页 |
| Chapter Three Methodology | 第32-36页 |
| ·Research questions | 第32页 |
| ·Subjects | 第32-33页 |
| ·Instruments | 第33-34页 |
| ·Procedures | 第34页 |
| ·Data analysis method | 第34-36页 |
| Chapter Four The Study:Analysis and Discussion | 第36-68页 |
| ·The results and discussion | 第36-59页 |
| ·The results and analysis of language test | 第36-40页 |
| ·The results and discussion of questionnaire | 第40-51页 |
| ·The results and discussion of hedges used in English classes | 第51-57页 |
| ·The results and discussion of hedges used by teachers | 第51-56页 |
| ·The results and discussion of hedges used by students | 第56-57页 |
| ·Inspirations | 第57-59页 |
| ·Pedagogical implications and suggestions | 第59-68页 |
| ·Raising students' awareness of using hedges in classroom | 第59-61页 |
| ·Changing students' view of language learning | 第61-63页 |
| ·Helping students learn more about second culture | 第63-65页 |
| ·Studying the usage of hedges by analyzing typical texts | 第65页 |
| ·Teaching high frequency hedges to students | 第65-66页 |
| ·Teaching hedges from students' errors | 第66-68页 |
| Chapter Five Conclusion | 第68-70页 |
| ·Major findings | 第68页 |
| ·Limitations and suggestions | 第68-70页 |
| Bibliography | 第70-75页 |
| Appendix 1:Questionnaire | 第75-76页 |
| Appendix 2:Language Test Paper | 第76-85页 |
| Appendix 3:Transcription Conventions for Classroom Discourse | 第85-86页 |
| Appendix 4:Transcription of Classroom Discourse | 第86-99页 |
