| Abstract | 第1-5页 |
| 摘要 | 第5-10页 |
| Chapter One Introduction | 第10-14页 |
| ·Preview of the research | 第10-11页 |
| ·Significance of the topic | 第11-12页 |
| ·Purpose of the study | 第12页 |
| ·Layout of the thesis | 第12-14页 |
| Chapter Two Literature Review | 第14-35页 |
| ·Terminology and definition of lexical bundles | 第14-17页 |
| ·Idioms, collocations & lexical bundles | 第17-18页 |
| ·Classification of lexical bundles | 第18-24页 |
| ·Functional categorization of lexical bundles | 第18-21页 |
| ·Structural categorization of lexical bundles | 第21-24页 |
| ·Functions of lexical bundles | 第24-29页 |
| ·Easing the burden of language processing | 第24-25页 |
| ·Facilitating language production | 第25-26页 |
| ·Helping establishment and development of grammatical rules | 第26-27页 |
| ·Achieving interactional functions | 第27-28页 |
| ·Facilitating acquisition of deeper and wider lexical knowledge | 第28-29页 |
| ·Main research and findings in the field of corpus | 第29-35页 |
| ·Definition and advantages of corpus | 第29-30页 |
| ·Corpus linguistics and language teaching | 第30-31页 |
| ·Corpus-based studies on lexical bundles | 第31-35页 |
| Chapter Three Research Methodology | 第35-43页 |
| ·Research questions | 第35页 |
| ·Identification of lexical bundles | 第35-37页 |
| ·The operational definition of lexical bundles | 第35-36页 |
| ·The criterion for identification of lexical bundles | 第36-37页 |
| ·Research design | 第37-43页 |
| ·Data selection | 第37-41页 |
| ·The introduction of WECCL | 第37-38页 |
| ·Selections from the corpora | 第38-39页 |
| ·Standardization of frequency | 第39-41页 |
| ·Data analysis | 第41-43页 |
| Chapter Four Results and Discussion | 第43-60页 |
| ·The most frequent four-word lexical bundles | 第43-48页 |
| ·Categories of these identified lexical bundles | 第48-53页 |
| ·Structural features of the identified lexical bundles | 第53-55页 |
| ·Comparison between the freshmen and the seniors | 第55-60页 |
| Chapter Five Conclusion | 第60-65页 |
| ·Major findings | 第60-61页 |
| ·Pedagogical implication | 第61-63页 |
| ·Limitations of the present study | 第63-64页 |
| ·Suggestions for future research | 第64-65页 |
| Bibliography | 第65-70页 |
| Acknowledgements | 第70页 |
