| Acknowledgements | 第1-5页 |
| Abstract | 第5-7页 |
| 摘要 | 第7-11页 |
| Chapter 1 Introduction | 第11-19页 |
| ·An introductory remark on Chinese word Hao | 第11-12页 |
| ·Literature Review | 第12-17页 |
| ·An overview of discourse marker | 第12-15页 |
| ·The related studies on OK | 第15-16页 |
| ·The related studies on Hao | 第16-17页 |
| ·Organization and Theoretical framework of the Study | 第17-19页 |
| Chapter 2 Categorization of the Functions of Hao | 第19-51页 |
| ·Introductory remarks | 第19-20页 |
| ·Theoretical framework | 第20-24页 |
| ·Systemic-Functional Grammar | 第20页 |
| ·Discussion on functions | 第20-23页 |
| ·Traditional function | 第20-21页 |
| ·Microfunction | 第21页 |
| ·Macrofunction | 第21页 |
| ·Metafuction | 第21-22页 |
| ·Structural/ Grammatical function | 第22-23页 |
| ·Stratificational Idea | 第23-24页 |
| ·Criterion of categorization: “class”vs “function” | 第24页 |
| ·Three Metafunctions realized at the level of word unit | 第24-26页 |
| ·Three Metafuncions in Chinese lexeme Hao | 第26-50页 |
| ·Experiential functions of Hao | 第27-32页 |
| ·Transitivity system | 第27-29页 |
| ·Hao as Mental Process | 第29页 |
| ·Hao as Goal (Participant) | 第29-30页 |
| ·Hao as Attribute | 第30-31页 |
| ·Hao as Circumstance | 第31页 |
| ·Discussion of Hao at Experiential level | 第31-32页 |
| ·Textual functions of Hao | 第32-38页 |
| ·Thematic structure | 第32-33页 |
| ·Hao as Textual Theme | 第33-34页 |
| ·Hao as Closing marker | 第34-37页 |
| ·Hao as Shifting marker | 第37-38页 |
| ·Discussion of Hao at Textual level | 第38页 |
| ·Interpersonal functions of Hao | 第38-50页 |
| ·Speech functions | 第39-40页 |
| ·Mood structure | 第40-42页 |
| ·Mood | 第40-41页 |
| ·Residue | 第41-42页 |
| ·Hao as Modal Adjunct | 第42-44页 |
| ·Hao as Interacting marker | 第44-50页 |
| ·Hao as Attention-getting signal | 第44-45页 |
| ·Hao as Command-softening signal | 第45-46页 |
| ·Hao as Appreciation signal | 第46页 |
| ·Hao as Agreement signal | 第46页 |
| ·Hao as Acknowledgement signal | 第46-47页 |
| ·Hao as Politeness signal | 第47页 |
| ·Hao as Turn-taking signal | 第47-48页 |
| ·Hao as Concession signal | 第48-49页 |
| ·Hao as Irony signal | 第49-50页 |
| ·Discussion of Hao at Interpersonal level | 第50页 |
| ·Summary of the functions of Hao | 第50-51页 |
| Chapter 3 Evolutionary Process of Functions of Hao | 第51-71页 |
| ·An overview of grammaticalisation | 第51-54页 |
| ·What is grammaticalisation | 第51-52页 |
| ·Semantic bleaching and generalisation | 第52页 |
| ·Principles of grammaticalisation | 第52-54页 |
| ·The tendency of semantic change | 第54页 |
| ·An overview of the development of Hao in history | 第54-60页 |
| ·Three paths of grammaticalisation of Hao | 第60-68页 |
| ·Path one: from adjective to phase mark | 第60-64页 |
| ·From adjective to resultive complement | 第60-62页 |
| ·Resultive complement | 第60-61页 |
| ·Hao as resultive complement | 第61页 |
| ·Semantic integrity as motivation | 第61-62页 |
| ·From resultive complement to phase mark | 第62-64页 |
| ·Phase marker | 第62页 |
| ·Hao as phase marker | 第62页 |
| ·Hao along the cline of grammaticality | 第62-64页 |
| ·Path two: from adjective to degree adverb | 第64-67页 |
| ·Degree adverb and generalization | 第64-65页 |
| ·Generalization of Hao as degree adverb | 第65-67页 |
| ·Path three: from adjective to interjection | 第67-68页 |
| ·Summary of the evolvement of Hao | 第68-71页 |
| Chapter 4 Conclusion | 第71-74页 |
| ·Summary of findings | 第71-73页 |
| ·Suggestions for further research | 第73-74页 |
| References | 第74-77页 |
