| Abstract in English | 第4-5页 |
| Abstract in Chinese | 第6-9页 |
| Chapter One Introduction | 第9-13页 |
| 1.1 The Background of the Research | 第9-11页 |
| 1.2 The Aims and Significance of the Research | 第11-12页 |
| 1.3 The Structure of the Thesis | 第12-13页 |
| Chapter Two Literature Review | 第13-28页 |
| 2.1 Relationship between Colloquial and Written English | 第13-16页 |
| 2.2 Distinctions Between Colloquialism and Written Form | 第16-19页 |
| 2.2.1 Features of Colloquialism | 第16-18页 |
| 2.2.2 Conventions of Written English | 第18-19页 |
| 2.3 Tendencies of Colloquializing Written English | 第19-22页 |
| 2.3.1 Descriptive linguistic trends in the West | 第19-20页 |
| 2.3.2 Studies of Colloquialism at Home | 第20-22页 |
| 2.4 The Development of English Writing Teaching | 第22-28页 |
| 2.4.1 The Product Approach | 第22-23页 |
| 2.4.2 The Process Approach | 第23-24页 |
| 2.4.3 The Genre-based Approach | 第24-25页 |
| 2.4.4 Scaffolding Instruction | 第25-28页 |
| Chapter Three Research Design and Method | 第28-32页 |
| 3.1 Research Questions | 第28页 |
| 3.2 Research Subjects | 第28-29页 |
| 3.3 Research Instruments | 第29-30页 |
| 3.4 Evaluation | 第30页 |
| 3.5 Research Procedure | 第30-32页 |
| Chapter Four Data Analysis and Discussion | 第32-63页 |
| 4.1 Statistical Distribution of Colloquial Expressions | 第32-39页 |
| 4.1.1 Lexical Distribution of Statistics Based on Sample Compositions | 第32-37页 |
| 4.1.2 Comparison of Writer/ Reader Visibility Between the Results of This Essay and Other Research Results | 第37-39页 |
| 4.2 Types of Colloquialism in the Writing Samples | 第39-53页 |
| 4.2.1 The Analysis of Colloquialism in Terms of Lexical Level | 第39-44页 |
| 4.2.2 The Analysis of Colloquialism in Terms of Syntactic Level | 第44-50页 |
| 4.2.3 The Analysis of Colloquialism in Terms of Discourse Level | 第50-53页 |
| 4.3 Possible Causes for Colloquialisation Phenomenon in Students’ Compositions | 第53-63页 |
| 4.3.1 Limited Vocabulary of English | 第53-55页 |
| 4.3.2 Inadequate Guidance to English Writing | 第55-56页 |
| 4.3.3 The Negative Transfer of Mother Tongue | 第56-58页 |
| 4.3.4 The Learning Order of Listening, Speaking, Reading and Writing50 | 第58-61页 |
| 4.3.5 Current Foreign Language Learning Context around the World | 第61-62页 |
| 4.3.6 Other Possible Causes | 第62-63页 |
| Chapter Five Conclusion | 第63-66页 |
| 5.1 Major Findings | 第63-64页 |
| 5.2 Implications for Language Teaching | 第64-65页 |
| 5.3 Limitation of the Research | 第65页 |
| 5.4 Suggestions for Further Study | 第65-66页 |
| References | 第66-70页 |
| Appendix 1 Directions of Sample Writing | 第70-71页 |
| Appendix 2 Full Texts of Sample Compositions | 第71-105页 |
| Acknowledgements | 第105页 |
