| ABSTRACT | 第4-5页 |
| 摘要 | 第6-7页 |
| AKNOWLEDGEMENTS | 第7-12页 |
| CHAPTER ONE INTRODUCTION | 第12-18页 |
| 1.1 Research background and objectives | 第12-16页 |
| 1.2 Significance of the study | 第16页 |
| 1.3 Outline of the study | 第16-18页 |
| CHAPTER TWO LITERATURE REVIEW | 第18-38页 |
| 2.1 Abstract as a promotional genre | 第18-20页 |
| 2.2 Linguistic realizations of abstracts | 第20-34页 |
| 2.2.1 Rhetorical moves and steps | 第20-27页 |
| 2.2.2 The lexico-grammatical realizations of promotion | 第27-34页 |
| 2.3 Promotional lexical bundles | 第34-35页 |
| 2.4 Research gap and proposal | 第35-38页 |
| CHAPTER THREE RESEARCH METHODOLOGY | 第38-47页 |
| 3.1 Research questions | 第38页 |
| 3.2 Corpus compilation and annotation | 第38-44页 |
| 3.3 Tools for corpus analysis | 第44-45页 |
| 3.4 Promotional lexical bundle word list | 第45-47页 |
| CHAPTER FOUR RESULTS AND DISCUSSION | 第47-69页 |
| 4.1 Comparison of distribution of promotional steps in CRAC and NRAC | 第47-57页 |
| 4.1.1 Comparison of promotional steps in STR move | 第47-50页 |
| 4.1.2 Comparison of promotional steps in PTR move | 第50-51页 |
| 4.1.3 Comparison of promotional steps in DTM move | 第51-52页 |
| 4.1.4 Comparison of promotional steps in STF move | 第52-53页 |
| 4.1.5 Comparison of promotional steps in DTR move | 第53-55页 |
| 4.1.6 Comparison of the overall distribution of promotional steps | 第55-57页 |
| 4.2 Comparison of distribution of promotional lexical bundles in CRAC and NRAC | 第57-69页 |
| 4.2.1 Comparison of promotional lexical bundles in STR move | 第57-61页 |
| 4.2.2 Comparison of promotional lexical bundles in PTR move | 第61-63页 |
| 4.2.3 Comparison of promotional lexical bundles in DTM move | 第63-64页 |
| 4.2.4 Comparison of promotional lexical bundles in STF move | 第64-67页 |
| 4.2.5 Comparison of promotional lexical bundles in DTR move | 第67-69页 |
| CHAPTER FIVE CONCLUSION | 第69-73页 |
| 5.1 Summary of major findings | 第69-71页 |
| 5.2 Implications of the study | 第71-72页 |
| 5.3 Limitations and Suggestions for future research | 第72-73页 |
| REFERENCES | 第73-83页 |
| APPENDIX | 第83-85页 |
