| Abstract | 第1-6页 |
| 摘要 | 第6-11页 |
| Introduction | 第11-17页 |
| Chapter One Literature Review | 第17-27页 |
| ·Earlier Studies on English Modality | 第17-19页 |
| ·Earlier Studies on Chinese Modality | 第19-25页 |
| ·Traditional Grammar | 第19-21页 |
| ·Structural Grammar | 第21-22页 |
| ·Three-Plane Theory | 第22页 |
| ·Cognitive Linguistics | 第22-24页 |
| ·The Study of Grammaticalization | 第24-25页 |
| ·Summary | 第25-27页 |
| Chapter Two Theoretical Foundation | 第27-37页 |
| ·Grammaticalization | 第27-30页 |
| ·Definition of Grammaticalization | 第27-28页 |
| ·Mechanisms and Motivations of Grammaticalization | 第28-30页 |
| ·Subjectification | 第30-33页 |
| ·Subjectification in Cognitive Grammar | 第31-32页 |
| ·Subjectification in Grammaticalization | 第32-33页 |
| ·Research Methods of the Present Study | 第33-35页 |
| ·Summary | 第35-37页 |
| Chapter Three The Polysemy of Modal Verbs in Modern Chinese:Enbodiment of Grammaticalization in Synchrony | 第37-59页 |
| ·Semantic Features of Modal Verbs | 第38-50页 |
| ·The Semantic Features of 'Neng'(能) | 第38-44页 |
| ·The Semantic Features of 'Hui'(会) | 第44-48页 |
| ·The Semantic Features of 'Nenggou'(能够) | 第48-49页 |
| ·The Semantic Features of 'Ke'neng'(可能) | 第49-50页 |
| ·A Cognitive Explanation toward the Polysemy of Modal Verbs | 第50-57页 |
| ·Force Schemas | 第51-53页 |
| ·The Force-Dynamic Analysis of the Dynamic and Deontic Modality | 第53-55页 |
| ·Epistemic Modality as an Extension of Deontic(/Dynamic) Modality | 第55-57页 |
| ·Summary | 第57-59页 |
| Chapter Four The Grammaticalization of Possibility Epistemic Model Verbs:Process Motivated by Subjectification in Diachrony | 第59-79页 |
| ·The Grammaticalization of 'Neng'(能) toward Epistemic Modality | 第60-66页 |
| ·'Neng'(能) in the Old Chinese Period:From a Verb to a Dynamic Modal | 第60-63页 |
| ·'Neng'(能) in the Middle Chinese Period:From a Dynamic Modal to a Deontic Modal | 第63-64页 |
| ·'Neng'(能) in Early Modern Chinese:From a Deontic Modal to an Epistemic Modal | 第64-66页 |
| ·The Grammaticalization of 'Hui'(会) toward Epistemic Modality | 第66-74页 |
| ·'Hui'(会) in the Old Chinese Period:From 'Hui_1' to 'Hui_2' | 第67-68页 |
| ·'Hui'(会) in the Middle Chinese Period:From 'Hui_2' to 'Hui_3' | 第68-71页 |
| ·'Hui'(会) in the Early Modern Chinese Period:From 'Hui_3' to an Epistemic Modal Verb | 第71-73页 |
| ·'Hui'(会) in the Modern Chinese Period:From a Dynamic Modality to a Deontic Modality | 第73-74页 |
| ·Typological Evidence for the Grammaticalization Cline | 第74-77页 |
| ·Typological Evidence from English | 第74-76页 |
| ·Typological Evidence from Other Languages | 第76-77页 |
| ·Summary | 第77-79页 |
| Conclusion | 第79-83页 |
| Bibliography | 第83-89页 |
| Appendix | 第89-91页 |
| Acknowledgements | 第91-93页 |
