| 中文摘要 | 第1-3页 |
| 英文摘要 | 第3-7页 |
| Chapter 1 Introduction | 第7-10页 |
| 1．1 Cognitive linguistic studies on the prepositional polysemy | 第7-8页 |
| 1．2 The object and characteristics of present study | 第8-10页 |
| Chapter 2 Existing Descriptions of the Semantics of Through | 第10-17页 |
| 2．1 Previous studies on preposition through and remaining problems | 第10-11页 |
| 2．2 The entry of through in The Oxford English Dictionary | 第11-15页 |
| 2．3 Corpus | 第15-17页 |
| Chapter 3 An Analysis of the Semantic Structure of Through | 第17-57页 |
| 3．1 Theoretical background | 第17-21页 |
| 3．2 The prototypical spatial image of through | 第21-28页 |
| 3．2．1 SOURCE—PATH—GOAL schema and CONTAINER schema | 第21-23页 |
| 3．2．2 The prototypical sense of through | 第23-25页 |
| 3．2．3 Reconsidering the primary sense of through | 第25-28页 |
| 3．3 Extensions from the prototypical sense of through | 第28-45页 |
| 3．3．1 Variants of the prototypical locative situation | 第29-30页 |
| 3．3．2 Connections,intermediaries and mediators | 第30-34页 |
| 3．3．3 Causal means and procedural means | 第34-40页 |
| 3．3．4 Some constraints | 第40-42页 |
| 3．3．5 Processing means and conquering means | 第42-45页 |
| 3．4 Extensions from less — prototypical image schemas of through | 第45-51页 |
| 3．4．1 Extensions from the image schema ”along within” | 第45-47页 |
| 3．4．2 Extensions from the image schema ”from beginning to end” | 第47-48页 |
| 3．4．3 Extensions from the image schema ”everywhere in” | 第48-49页 |
| 3．4．4 Extensions from the image schema ”up to the end of” | 第49-51页 |
| 3．5 The semantic structure of through as a family resemblance category | 第51-57页 |
| 3．5．1 Some criticism and an answer to it | 第53-57页 |
| Chapter 4 Conclusion | 第57-58页 |
| Acknowledgements | 第58-59页 |
| References | 第59-64页 |
| Appendix A （攻读学位期间发表论文目录） | 第64-65页 |
| Appendix B （详细中文摘要） | 第65-67页 |
