| 摘要 | 第5-6页 |
| Abstract | 第6页 |
| Content | 第7-9页 |
| Chapter One Introduction | 第9-11页 |
| 1.1 Research Orientation | 第9页 |
| 1.2 Significance of the Research | 第9-10页 |
| 1.3 Layout of the thesis | 第10-11页 |
| Chapter Two Literature Review | 第11-18页 |
| 2.1 Previous Review of the Study at Home | 第11-14页 |
| 2.1.1 Previous Review about Teaching English Business Letters at Home | 第11-12页 |
| 2.1.2 Previous Studies on Lexical Chunks Theory at Home | 第12-13页 |
| 2.1.3 Previous Review about Applying Lexical Chunks Theory in Teaching English at Home | 第13-14页 |
| 2.2 Previous Review of the Study Abroad | 第14-16页 |
| 2.2.1 Previous Review of Lexical Chunks Theory Aboard | 第14页 |
| 2.2.2 Previous Review of Business English Letter Writing Abroad | 第14-16页 |
| 2.3 Existing Questions on Teaching English Business Letter in Vocational College School | 第16-17页 |
| 2.4 Research Questions | 第17-18页 |
| Chapter Three Theory Foundation | 第18-26页 |
| 3.1 Lexical Chunks Theory | 第18-21页 |
| 3.1.1 Definition of Lexical Chunks | 第18-19页 |
| 3.1.2 Classification of Lexical Chunks | 第19-20页 |
| 3.1.3 Functions of Lexical Chunks | 第20页 |
| 3.1.4 Functions of Lexical Chunks in Language Teaching | 第20-21页 |
| 3.2 Lexical Chunks and Language Teaching | 第21-22页 |
| 3.2.1 Lexical Approach | 第21-22页 |
| 3.2.2 Key Principles of Lexical Approach | 第22页 |
| 3.3 Application of Lexical Approach into Writing English Business Letter Class | 第22-23页 |
| 3.4 The Lexicalization of Business English Letter | 第23-26页 |
| Chapter Four Data Collection and Analysis | 第26-38页 |
| 4.1 Data Collection | 第26页 |
| 4.2 Results and Analysis | 第26-35页 |
| 4.2.1 Descriptive Statistics of Composition Scores between Control Class and Experiment Class | 第26-30页 |
| 4.2.2 Correlation between the Total Number of Lexical Chunks and Mean Score | 第30-31页 |
| 4.2.3 Comparison of Lexical Chunks Used in Two Groups | 第31-35页 |
| 4.3 Discussion | 第35-38页 |
| 4.3.1 Relationship between the Use of Lexical Chunks and the Quality of the Composition | 第35页 |
| 4.3.2 A Comparison of the Use of Lexical Chunks between EG and CG | 第35-38页 |
| Chapter Five Teaching Model and Strategies | 第38-45页 |
| 5.1 Teaching Model | 第38-39页 |
| 5.2 Teaching Strategies | 第39-44页 |
| 5.2.1 Highlighting Lexical Chunks | 第40-41页 |
| 5.2.2 Constructing Lexical Chunks Model of BEL | 第41-42页 |
| 5.2.3 Analysis of Discourse Moves and Lexical Chunks | 第42-43页 |
| 5.2.4 Building up a Corpus of Lexical Chunks for BEL | 第43-44页 |
| 5.3 Summary | 第44-45页 |
| Chapter Six Conclusion | 第45-47页 |
| 6.1 Conclusion | 第45页 |
| 6.2 Pedagogical Implications | 第45-46页 |
| 6.3 Limitations | 第46-47页 |
| References | 第47-50页 |
| Appendix A Three topics applied in three tests | 第50-51页 |
| Appendix B The Criteria for Making the Compositions | 第51-52页 |
| Appendix C Raw scores of compositions of EG and CG in three tests | 第52-53页 |
| Appendix D The number of lexical chunks using of EG and CG in the third test | 第53-54页 |
| Acknowledgments | 第54页 |
