| Abstract | 第1-5页 |
| 摘要 | 第5-9页 |
| Introduction | 第9-11页 |
| 1 Literature Review | 第11-20页 |
| ·Theoretical Review: Definitions and Classifications | 第11-14页 |
| ·Previous Empirical Studies on Lexical Bundles | 第14-20页 |
| 2 Methodology | 第20-25页 |
| ·Research Questions | 第20页 |
| ·Corpus-based Approach | 第20-21页 |
| ·Corpora Description | 第21页 |
| ·Software | 第21-22页 |
| ·Research Procedures | 第22-25页 |
| 3 Results and Discussion | 第25-46页 |
| ·Overall Distribution of Lexical Bundles in Three Corpora | 第25页 |
| ·Structural Classification and Comparison of Lexical Bundles | 第25-34页 |
| ·Functional Classification and Comparison of Lexical Bundles | 第34-45页 |
| ·The Relationship Between Structural and Functional Categories | 第45-46页 |
| Conclusion | 第46-49页 |
| References | 第49-54页 |
| Acknowledgements | 第54-55页 |
| Appendix I List of Journals in Linguistics Ranking by Impact Factor | 第55-56页 |
| Appendix II List of Journals in Physics Ranking by Impact Factor | 第56-57页 |
| Appendix III List of Journals in Energy Ranking by Impact Factor | 第57-58页 |
| Appendix IV List of the Structural Classifications of Bundles in Linguistics | 第58-60页 |
| Appendix V List of the Structural Classifications of Bundles in Physics | 第60-62页 |
| Appendix VI List of the Structural Classifications of Bundles in Energy | 第62-64页 |
| Appendix Ⅶ List of the Functional Classifications of Bundles in Linguistics | 第64-66页 |
| Appendix Ⅷ List of the Functional Classifications of Bundles in Physics | 第66-68页 |
| Appendix Ⅸ List of the Functional Classifications of Bundles in Energy | 第68-69页 |
