| Acknowledgements | 第5-6页 |
| Abstract | 第6-7页 |
| 摘要 | 第8-12页 |
| Chapter One Introduction | 第12-18页 |
| 1.1 Introduction | 第12页 |
| 1.2 Background of the Study | 第12-14页 |
| 1.3 Background of Yi Ethnic Minority Group in Chuxiong | 第14-15页 |
| 1.4 Purpose of the Study | 第15-16页 |
| 1.5 Significance of the Study | 第16页 |
| 1.6 Layout of the Thesis | 第16-18页 |
| Chapter Two Literature Review | 第18-34页 |
| 2.1 Introduction | 第18页 |
| 2.2 Second Language Acquisition and Third Language Acquisition | 第18-33页 |
| 2.2.1 Bilingualism and Trilingualism | 第19-20页 |
| 2.2.2 Transfer | 第20-21页 |
| 2.2.3 Learning Styles | 第21-25页 |
| 2.2.4 Studies on Bilingualism and Trilingualism | 第25-29页 |
| 2.2.5 Studies on Learning Styles | 第29-33页 |
| 2.3 Summary | 第33-34页 |
| Chapter Three Methodology | 第34-41页 |
| 3.1 Introduction | 第34页 |
| 3.2 Research Design | 第34页 |
| 3.3 Research Questions | 第34-35页 |
| 3.4 Research Instruments | 第35-37页 |
| 3.4.1 Questionnaire | 第35-36页 |
| 3.4.2 The Subjects’ English Scores in Senior Middle School Entrance Examination | 第36-37页 |
| 3.4.3 Interviews | 第37页 |
| 3.5 The Subjects of the Study | 第37-38页 |
| 3.6 Procedures of Data Collection | 第38-39页 |
| 3.7 Data Analysis | 第39-41页 |
| Chapter Four Results and Discussions | 第41-63页 |
| 4.1 Introduction | 第41页 |
| 4.2 The Learning Styles of Middle School Students with Different Mother Tongue Background | 第41-55页 |
| 4.2.1 The Learning Styles Preferred by the Students with Different Mother Tongue Background | 第41-51页 |
| 4.2.2 The Differences in English Leaning Styles of Students with Different Mother Tongue | 第51-55页 |
| 4.3 The Learning Styles of the Students with Different Mother Tongue in Terms of Gender | 第55-59页 |
| 4.3.1 The Learning Styles Preferred by Male and Female Students in Each Group | 第55-56页 |
| 4.3.2 The Difference among the Learning Styles of the Students with Different Mother Tongue in Terms of Gender | 第56-59页 |
| 4.4 Relationship between Students’ Learning Styles and Their English Proficiency | 第59-63页 |
| Chapter Five Conclusions | 第63-75页 |
| 5.1 Introduction | 第63页 |
| 5.2 Major Findings of the Study | 第63-64页 |
| 5.3 Summary | 第64-67页 |
| 5.4 Limitations of the Study | 第67-68页 |
| 5.5 Implications of the Study | 第68-73页 |
| 5.6 Suggestions for Future Research | 第73-75页 |
| References | 第75-83页 |
| Appendix 1 | 第83-90页 |
| Appendix 2 | 第90-94页 |
| Appendix 3 | 第94-96页 |
| Appendix 4 | 第96-97页 |
| Appendix 5 | 第97-99页 |
