| ABSTRACT | 第4-5页 |
| 摘要 | 第6-12页 |
| CHAPTER ONE INTRODUCTION | 第12-15页 |
| 1.1 Background | 第12-13页 |
| 1.2 Aim and Significance of the Study | 第13页 |
| 1.3 Organization of the thesis | 第13-15页 |
| CHAPTER TWO LITERATURE REVIEW | 第15-30页 |
| 2.1 Lexical Bundles | 第15-25页 |
| 2.1.1 Definition of Lexical Bundles and Four-word Lexical Bundles | 第15-17页 |
| 2.1.2 Classifications of Lexical Bundles | 第17-21页 |
| 2.1.3 Studies on Four-word Lexical Bundles | 第21-25页 |
| 2.2 Studies on Introductions of Academic Writing | 第25-28页 |
| 2.2.1 Studies on Introductions of Academic Writing Abroad | 第25-27页 |
| 2.2.2 Studies on Introductions of Academic Writing at Home | 第27-28页 |
| 2.3 Summary | 第28-30页 |
| CHAPTER THREE METHODOLOGY | 第30-44页 |
| 3.1 Research Questions | 第30页 |
| 3.2 Data Collection | 第30-31页 |
| 3.3 Instruments | 第31-33页 |
| 3.4 Analytical Procedures | 第33-37页 |
| 3.5 Measurement of Key Terms | 第37-44页 |
| 3.5.1 Measurement of Four-word Lexical Bundles | 第37-38页 |
| 3.5.2 Measurement on Structures of Four-word Lexical Bundles | 第38-41页 |
| 3.5.3 Measurement on Functions of Four-word Lexical Bundles | 第41-44页 |
| CHAPTER FOUR RESULTS AND DISCUSSION | 第44-64页 |
| 4.1 Differences and Similarities in Structures of Four-word Lexical Bundles inIntroduction Section of M.A. Theses | 第44-56页 |
| 4.1.1 Differences in Structures of Four-word Lexical Bundles in Introduction Sectionof M.A. Theses | 第46-47页 |
| 4.1.2 Similarities in Structures of Four-word Lexical Bundles in Introduction Sectionof M.A. Theses | 第47-48页 |
| 4.1.3 Discussions | 第48-56页 |
| 4.2 Differences and Similarities in Functions of Four-word Lexical Bundles inIntroductionSection of M.A. Theses | 第56-64页 |
| 4.2.1 Differences in Functions of Four-word Lexical Bundles in Introduction Sectionof M.A. Theses | 第57页 |
| 4.2.2 Similarities in Functions of Four-word Lexical Bundles in IntroductionSectionof M.A. Theses | 第57页 |
| 4.2.3 Discussions | 第57-64页 |
| CHAPTER FIVE CONCLUSION | 第64-67页 |
| 5.1 Major Findings | 第64-65页 |
| 5.2 Implications of the Study | 第65页 |
| 5.3 Limitations and Suggestions for Future Studies | 第65-67页 |
| REFERENCES | 第67-71页 |
| APPENDIX Ⅰ | 第71-75页 |
| APPENDIX Ⅱ | 第75-76页 |
| APPENDIX Ⅲ | 第76-79页 |
| APPENDIX Ⅳ | 第79-83页 |
| 攻读学位期间取得的研究成果 | 第83-84页 |
| ACKNOWLEDGEMENTS | 第84页 |
