| 摘要 | 第5-6页 |
| Abstract | 第6-7页 |
| Contents | 第8-9页 |
| Chapter One Introduction | 第9-12页 |
| 1.1 Research Background of the Study | 第9页 |
| 1.2 Research Questions of the Study | 第9-10页 |
| 1.3 Motivation and Significance of the Study | 第10页 |
| 1.4 Methodology and Layout of the Study | 第10-12页 |
| Chapter Two Literature Review | 第12-20页 |
| 2.1 Previous Studies on the English Subjunctive | 第12-18页 |
| 2.1.1 Existence of the English Subjunctive as a Grammatical Category | 第13-14页 |
| 2.1.2 Classification of the English Subjunctive | 第14-18页 |
| 2.2 Cognitive Studies on the English Subjunctive | 第18-20页 |
| 2.2.1 Grammaticalization of the English Subjunctive | 第18-19页 |
| 2.2.2 Subjectivity of the English Subjunctive | 第19-20页 |
| Chapter Three Theoretical Framework | 第20-34页 |
| 3.1 Development of Iconicity Theory | 第20-24页 |
| 3.1.1 Iconicity vs.Arbitrariness | 第21-22页 |
| 3.1.2 Cognitive Foundation of Iconicity | 第22-24页 |
| 3.2 Syntactical Principles of Iconicity | 第24-31页 |
| 3.2.1 Distance Principle | 第24-25页 |
| 3.2.2 Sequential Order Principle | 第25-27页 |
| 3.2.3 Quantity Principle | 第27-28页 |
| 3.2.4 Markedness Principle | 第28-31页 |
| 3.3 Pragmatic Investigation of Iconicity Principle | 第31-34页 |
| Chapter Four An Iconic Investigation of the English Subjunctive | 第34-45页 |
| 4.1 Iconic Investigation of Unreal Subordinate Clause Subjunctive | 第34-40页 |
| 4.2 Iconic Investigation of Modal Verb Subjunctive | 第40-41页 |
| 4.3 Iconic Investigation of Mandative Subjunctive | 第41-43页 |
| 4.4 Iconic Investigation of Formulative Subjunctive | 第43-45页 |
| Chapter Five Conclusion | 第45-48页 |
| 5.1 A General Conclusion | 第45-46页 |
| 5.2 Significance of the Study | 第46页 |
| 5.3 Suggestions and Limitations for the Study | 第46-48页 |
| References | 第48-50页 |
| Acknowledgements | 第50页 |
