| 摘要 | 第8-9页 |
| Abstract | 第9-10页 |
| 1 Introduction | 第11-14页 |
| 1.1 The General Description of the Study | 第11-12页 |
| 1.2 The Objectives of the Study | 第12-13页 |
| 1.3 The Significance of the Study | 第13页 |
| 1.4 The Organization of the Thesis | 第13-14页 |
| 2 Literature Review | 第14-21页 |
| 2.1 Previous Studies on Thematic Theory | 第14-17页 |
| 2.1.1 Studies on Thematic Theory Abroad | 第14-16页 |
| 2.1.2 Studies on Thematic Theory at Home | 第16-17页 |
| 2.2 Previous Studies on Thematic Progression Patterns | 第17-20页 |
| 2.2.1 Studies on Thematic Progression Patterns Abroad | 第17-18页 |
| 2.2.2 Studies on Thematic Progression Patterns at Home | 第18-20页 |
| 2.3 Previous Studies on Thematic Progression Patterns in Scientific Abstracts | 第20页 |
| 2.4 Summary | 第20-21页 |
| 3 Theoretical Framework of the Study | 第21-28页 |
| 3.1 Halliday’s Thematic Theory | 第21-25页 |
| 3.1.1 Theme and Rheme | 第21-22页 |
| 3.1.2 Type of Theme | 第22-25页 |
| 3.2 Zhu Yongsheng^ Thematic Progression Patterns | 第25-27页 |
| 3.2.1 Thematic Structure | 第25页 |
| 3.2.2 Thematic Progression Patterns | 第25-27页 |
| 3.3 Summary | 第27-28页 |
| 4 Research Design | 第28-34页 |
| 4.1 Research Questions | 第28页 |
| 4.2 Corpus Establishment | 第28-29页 |
| 4.3 Research Methods and Procedures | 第29页 |
| 4.4 Analysis of Two Samples | 第29-33页 |
| 4.4.1 Analysis of One Sample of English Abstract | 第29-31页 |
| 4.4.2 Analysis of One Sample of Chinese Abstract | 第31-33页 |
| 4.5 Summary | 第33-34页 |
| 5 Results and Discussion | 第34-57页 |
| 5.1 Comparison of Thematic Structures between English and Chinese Abstracts of AgronomyPeriodicals | 第34-46页 |
| 5.1.1 Analysis of Thematic Structures in Chinese Abstracts | 第34-39页 |
| 5.1.2 Analysis of Thematic Structures in English Abstracts | 第39-43页 |
| 5.1.3 Comparison of Thematic Structures between English and Chinese Abstracts | 第43-46页 |
| 5.2 Comparison of Thematic Progression Patterns between English and Chinese Abstracts ofAgronomy Periodicals | 第46-55页 |
| 5.2.1 Analysis of Thematic Progression Patteras in Chinese Abstracts | 第47-50页 |
| 5.2.2 Analysis of Thematic Progression Patterns in English Abstracts | 第50-53页 |
| 5.2.3 Comparison of Thematic Progression Patterns between English and Chinese Abstracts | 第53-55页 |
| 5.3 Summary | 第55-57页 |
| 6 Conclusion | 第57-60页 |
| 6.1 Major Findings of the Study | 第57-58页 |
| 6.2 Implications of the Study | 第58-59页 |
| 6.3 Limitations of the Study and Recommendation for the Future Study | 第59-60页 |
| Acknowledgements | 第60-61页 |
| References | 第61-65页 |
| Appendices | 第65-75页 |
| Papers published in the period of Ph. M. education | 第75页 |
