| Acknowledgements | 第5-6页 |
| 摘要 | 第6-7页 |
| ABSTRACT | 第7页 |
| 1 Introduction | 第10-13页 |
| 1.1 Background | 第10页 |
| 1.2 Purpose and Significance of the Research | 第10-11页 |
| 1.3 Methodology and Procedures | 第11页 |
| 1.4 Organization of the Thesis | 第11-13页 |
| 2 Literature Review | 第13-21页 |
| 2.1 Main Properties of Cleft Structures | 第13-18页 |
| 2.1.1 Cleft Structures in English | 第13-15页 |
| 2.1.2 Cleft Structures in Chinese | 第15-17页 |
| 2.1.3 Contrast between English and Chinese Cleft Structures | 第17-18页 |
| 2.2 Previous Studies of "Be" and "Shi" in Cleft Structures | 第18-21页 |
| 3 Theoretical Foundations | 第21-26页 |
| 3.1 Grammaticalization | 第21-23页 |
| 3.1.1 Definition of Grammaticalization | 第21-22页 |
| 3.1.2 Mechanisms of Grammaticalization | 第22-23页 |
| 3.1.3 Features of Grammaticalization | 第23页 |
| 3.2 Halliday & Hasan's "Exophora & Endophora" Theory | 第23-26页 |
| 4 Contrast of "Shi" and "Be" from a Diachronic Perspective | 第26-35页 |
| 4.1 Origins and Developments of "Shi" and "Be" | 第26-30页 |
| 4.1.1 Diachronic Development of "Shi" in Chinese | 第26-29页 |
| 4.1.2 Diachronic Development of "Be" in English | 第29-30页 |
| 4.2 Grammaticalization of "Shi" and "Be" | 第30-35页 |
| 4.2.1 Grammaticalization of "Shi" | 第30-33页 |
| 4.2.2 Grammaticalization of "Be" and Its Contrast with "Shi" | 第33-35页 |
| 5 Contrast of "Shi" and "Be" from a Synchronic Perspective | 第35-46页 |
| 5.1 Syntactic and Semantic Properties of "Shi" and "Be" | 第35-40页 |
| 5.1.1 Syntactic and Semantic Similarity of "Shi" and "Be" | 第35-37页 |
| 5.1.1.1 Similarity in Syntactic Functions | 第35-36页 |
| 5.1.1.2 Similarity in Semantic Meaning | 第36-37页 |
| 5.1.2 Syntactic and Semantic Differences between "Shi" and "Be" | 第37-40页 |
| 5.2 Analysis of "Be" and "Shi" in Cleft Structures | 第40-46页 |
| 5.2.1 Performance of "Be" in English Cleft Structures | 第40-41页 |
| 5.2.2 Performance of "Shi" in Chinese Cleft Structures | 第41-44页 |
| 5.2.3 Contrast of "Shi" and "Be" in Cleft Structures | 第44-46页 |
| 6 Summary | 第46-47页 |
| Bibliography | 第47-50页 |
| 作者简历 | 第50-52页 |
| 学位论文数据集 | 第52页 |
