| Abstract in English | 第4-5页 |
| Abstract in Chinese | 第6-9页 |
| Chapter One Introduction | 第9-13页 |
| 1.1 Research Background | 第9-10页 |
| 1.2 Research Questions | 第10-11页 |
| 1.3 Significance of the Study | 第11页 |
| 1.4 Structural Organization of the Thesis | 第11-13页 |
| Chapter Two Literature Review | 第13-22页 |
| 2.1 Studies of Coordinate Conjunction at Home | 第13-18页 |
| 2.1.1 Definition of Coordinate Conjunction | 第13-14页 |
| 2.1.2 Previous Studies on Coordinate Conjunction he | 第14-17页 |
| 2.1.3 Previous Studies on Coordinate Conjunction yu | 第17-18页 |
| 2.2 Studies of Coordinate Conjunction at Abroad | 第18-20页 |
| 2.3 Comments on the Previous Studies | 第20-22页 |
| Chapter Three Theoretical Framework | 第22-30页 |
| 3.1 Interaction between Grammar and Pragmatics | 第22-24页 |
| 3.1.1 Relationship between Meaning and Use | 第23页 |
| 3.1.2 Relationship between Conventionality and Intentionality | 第23-24页 |
| 3.2 Linguistic Adaptation | 第24-29页 |
| 3.2.1 Language Use as Making of Choices | 第25-26页 |
| 3.2.2 Three Properties of Language in Use | 第26-27页 |
| 3.2.3 Four Angles of Linguistic Adaptation | 第27-29页 |
| 3.3 Summary | 第29-30页 |
| Chapter Four Research Methodology | 第30-43页 |
| 4.1 Data Collection | 第30-32页 |
| 4.1.1 Script Corpora | 第30-31页 |
| 4.1.2 TV Corpora | 第31页 |
| 4.1.3 The People’s Daily Corpus | 第31-32页 |
| 4.2 Research Procedures | 第32页 |
| 4.3 Data Description | 第32-43页 |
| 4.3.1 Description of the Script Corpora | 第33-37页 |
| 4.3.2 Description of the TV Corpora | 第37-43页 |
| Chapter Five Data Analysis | 第43-65页 |
| 5.1 Distributions of Coordinate Conjunctions he and yu | 第43-61页 |
| 5.1.1 Distribution of he and yu in Spoken Discourse | 第43-49页 |
| 5.1.2 Distribution of he and yu in Written Discourse | 第49-61页 |
| 5.2 Similarities between the Two Coordinate Conjunctions he and yu in Use | 第61-62页 |
| 5.2.2 Syntactic Features | 第61-62页 |
| 5.2.3 Semantic Features | 第62页 |
| 5.3 Differences between the Two Coordinate Conjunctions he and yu in Use | 第62-65页 |
| 5.3.1 Usage Conditions at the Lexical Level | 第62-63页 |
| 5.3.2 Usage Conditions at the Syntactic Level | 第63-64页 |
| 5.3.3 Usage Conditions at the Semantic Level | 第64-65页 |
| Chapter Six Results and Discussion | 第65-75页 |
| 6.1 Influential Factors for Choice of he and yu | 第65-68页 |
| 6.2 Variability-based Account on Pragmatic Constrains of Coordinate Conjunction he and yu | 第68-70页 |
| 6.2.1 Variability-based Account on Pragmatic Constrains of Coordinate Conjunction he | 第68-69页 |
| 6.2.2 Variability-based Account on Pragmatic Constrains of the Coordinate Conjunction yu | 第69-70页 |
| 6.3 Negotiability-based Account on Pragmatic Constrains of Coordinate Conjunction he and yu | 第70-72页 |
| 6.3.1 Negotiability-based Account on Pragmatic Constrains of Coordinate Conjunction he | 第71页 |
| 6.3.2 Negotiability-based Account on Pragmatic Constrains of Coordinate Conjunction yu | 第71-72页 |
| 6.4 Adaptability-based Account on Pragmatic Constrains of Coordinate Conjunctions he and yu | 第72-75页 |
| 6.4.1 Adaptability-based Account on Pragmatic Constrains of Coordinate Conjunction he | 第72-73页 |
| 6.4.2 Adaptability-based Account on Pragmatic Constrains of Coordinate Conjunction yu | 第73-75页 |
| Chapter Seven Conclusion | 第75-77页 |
| 7.1 Major Findings | 第75-76页 |
| 7.2 Theoretical and Practical Implications | 第76页 |
| 7.3 Limitations and Suggestions for Further Studies | 第76-77页 |
| References | 第77-81页 |
| Appendix I Data from the People’s Daily Corpus | 第81-82页 |
| Appendix II Tables of Allocations in Full Version | 第82-94页 |
| Acknowledgements | 第94页 |
