| ACKNOWLEDGEMENTS | 第4-5页 |
| 摘要 | 第5-8页 |
| ABSTRACT | 第8-10页 |
| Chapter One INTRODUCTION | 第17-23页 |
| 1.1 Research Background | 第17-19页 |
| 1.2 Aim and Significance | 第19-21页 |
| 1.3 Structure of the Thesis | 第21-23页 |
| Chapter Two LITERATURE REVIEW | 第23-43页 |
| 2.1 Definitions and Concepts | 第23-26页 |
| 2.1.1 Formulaic language, formulaic sequence and MEU | 第23-25页 |
| 2.1.2 Lexical bundle and n-gram | 第25-26页 |
| 2.1.3 Construction | 第26页 |
| 2.2 Approaches to Formulaic Sequences | 第26-31页 |
| 2.2.1 Corpus-based approach | 第27-28页 |
| 2.2.2 Psycholinguistic approach | 第28-29页 |
| 2.2.3 Language acquisition approach | 第29-31页 |
| 2.3 Studies on Formulaic Sequences | 第31-39页 |
| 2.3.1 Studies on teaching formulaic sequences | 第32-33页 |
| 2.3.2 Studies on compiling formulaic sequences lists | 第33-37页 |
| 2.3.3 Studies on vocabulary learning through watching TV | 第37-39页 |
| 2.4 Trends and Research Gap | 第39-43页 |
| Chapter Three THEORETICAL FRAMEWORK | 第43-51页 |
| 3.1 Systems Theory | 第43-44页 |
| 3.2 Language as a Complex Adaptive System | 第44-48页 |
| 3.2.1 Usage-based approach to language learning | 第45-46页 |
| 3.2.2 Trends in language learning | 第46-48页 |
| 3.3 A Language Learning Model | 第48-51页 |
| Chapter Four RESEARCH METHODOLOGY | 第51-59页 |
| 4.1 Research Questions | 第51-52页 |
| 4.2 Data Collection | 第52-53页 |
| 4.3 Working Definition and Research Instrument | 第53-56页 |
| 4.4 Research Procedures | 第56-59页 |
| Chapter Five RESULTS AND DISCUSSIONS | 第59-91页 |
| 5.1 Four-word Lexical Bundles in the Sitcom Corpus | 第59-71页 |
| 5.1.1 Number and distribution of four-word lexical bundles | 第59-61页 |
| 5.1.2 Features of personal pronoun + lexical verb phrases | 第61-64页 |
| 5.1.3 Features of verb phrases with active verbs | 第64-68页 |
| 5.1.4 Features of question fragments | 第68-71页 |
| 5.2 Multi-word Expressions | 第71-79页 |
| 5.2.1 Form-meaning parings of four-word lexical bundles | 第71-74页 |
| 5.2.2 Form-meaning pairings containing four-word lexical bundles | 第74-77页 |
| 5.2.3 Formulaic sentence frames | 第77-79页 |
| 5.3 Lexical Features of the Sitcom Corpus | 第79-91页 |
| 5.3.1 Overview | 第79-81页 |
| 5.3.2 Frequent word types | 第81-86页 |
| 5.3.3 Individual words and multi-word expressions | 第86-91页 |
| Chapter Six CONCLUSION | 第91-97页 |
| 6.1 Major Findings of This Study | 第91-93页 |
| 6.2 Implications of This Study | 第93-95页 |
| 6.3 Limitations and Suggestions | 第95-97页 |
| REFERENCES | 第97-103页 |
| Appendix I：Four-word lexical bundles derived from the sitcomcorpus | 第103-111页 |
| 附录： 作者在攻读硕士学位期间发表的论文 | 第111页 |
