| Acknowledgements | 第6-7页 |
| 摘要 | 第7-8页 |
| Abstract | 第8-9页 |
| Chapter One Introduction | 第12-16页 |
| 1.1 Background of the Study | 第12-13页 |
| 1.2 Objectives and Significance of the Study | 第13-14页 |
| 1.3 Research Questions | 第14页 |
| 1.4 Organization of the Thesis | 第14-16页 |
| Chapter Two Literature Review | 第16-32页 |
| 2.1 Pragmatic Markers | 第16-21页 |
| 2.1.1 The Definition of Pragmatic Markers | 第16-17页 |
| 2.1.2 Previous Studies on Pragmatic Markers | 第17-21页 |
| 2.2 Construction Grammar | 第21-28页 |
| 2.2.1 The Core Concept - Construction | 第21-24页 |
| 2.2.2 The Interaction between Verbs and Constructions | 第24-25页 |
| 2.2.3 A Taxonomic Network of Interlinked Constructions and Inheritance | 第25-28页 |
| 2.3 Previous Studies on let's | 第28-30页 |
| 2.4 Summary | 第30-32页 |
| Chapter Three Formal and Functional Variations in the Use of let's as a Pragmatic Marker | 第32-45页 |
| 3.1 Research Design | 第32-34页 |
| 3.1.1 Data Source | 第32页 |
| 3.1.2 Data Collection | 第32-34页 |
| 3.1.3 Methods of Analysis | 第34页 |
| 3.2 Formal Variation | 第34-37页 |
| 3.2.1 Morphological Variation | 第34-36页 |
| 3.2.2 Syntactic Variation | 第36-37页 |
| 3.3 Functional Variation of let's as a Pragmatic Marker | 第37-42页 |
| 3.3.1 Textual Functions | 第37-40页 |
| 3.3.2 Interpersonal Functions | 第40-42页 |
| 3.4 The Relationship between the Formal and Functional Variations | 第42-43页 |
| 3.5 Summary | 第43-45页 |
| Chapter Four A Constructional Account of the Variations in the Use of let's as a Pragmatic Marker | 第45-58页 |
| 4.1 The Pragmatic Marker let's as a Construction | 第45-46页 |
| 4.2 The Pragmatic Marker let's-based Constructions: Sub-constructions of the Pragmatic Marker let's Construction | 第46-54页 |
| 4.2.1 From the Syntactic Perspective | 第47-49页 |
| 4.2.2 From the Morphological Perspective | 第49-50页 |
| 4.2.3 From the Functional Perspective | 第50-54页 |
| 4.3 A Taxonomic Network for the Pragmatic Marker let's Construction | 第54-56页 |
| 4.4 Summary | 第56-58页 |
| Chapter Five Conclusion | 第58-61页 |
| 5.1 Major Findings of the Thesis | 第58-59页 |
| 5.2 Limitations and Suggestions for Further Studies | 第59-61页 |
| References | 第61-68页 |
