语码转换涉及双语与语言接触，是典型的社会语 言学问题。王瑾所著的《作为社会实践的语码转换-- 中文报章汉英语码转换的系统功能语言学研究》从系 统功能语言学的角度研究，分析材料来自三份中文报 纸中出现的汉英语码转换实例。与国外大多研究关注 的殖民、后殖民、移民环境的语码转换情况不同，中 国社会出现的汉英语码转换是英语在第三世界国家作 为外语广泛传播和“学习性语言接触”的结果。《作 为社会实践的语码转换--中文报章汉英语码转换的系 统功能语言学研究》通过理论论证和语料分析表明， 不管是从语域变异角度观照汉英语码转换的总体模式 ，还是从纯理功能角度看待其意义及意义的体现方式 ，无论是将语码转换置于交际的微观即时语境，还是 置于价值论话语交错互文的宏观文化语境，语码转换 的形式与功能是“汉英学习型语言接触”这一特定社 会语境在语言层面的投射。本书将常应用于单语研究 的系统功能语言学拓展至双语领域，并在系统功能语 言学如何为语码转换研究提供必要且适切的分析框架 上着力颇多。

List of Figures
List of Tables
Abbreviations
1 Introduction
1.1 Code-switching and bilingualism
1.2 A profile of the Chinese/English contact in China
1.3 The data
1.4 Aims and objectives
1.5 Theoretical framework
1.6 Book structure
2 Code-switching as a Multifaceted Research Topic
2.1 Introduction
2.2 Code-switching: Definitions, terminologies, and taxonomies
2.3 The social and functional aspects of code-switching
2.4 Other studies on code-switching List of Figures
List of Tables
Abbreviations
1  Introduction
  1.1  Code-switching and bilingualism
  1.2  A profile of the Chinese/English contact in China
  1.3  The data
  1.4  Aims and objectives
  1.5  Theoretical framework
  1.6  Book structure
2  Code-switching as a Multifaceted Research Topic
  2.1  Introduction
  2.2  Code-switching: Definitions, terminologies, and taxonomies
  2.3  The social and functional aspects of code-switching
  2.4  Other studies on code-switching
  2.5  Summary
3  Theoretical Foundations
  3.1  Introduction
  3.2  Theoretical assumptions of SFL
  3.3  Some basic principles of SFL
  3.4  Rationale for a SFL approach to code-switching
  3.5  Summary
4  Code-switching Patterns: A Registerial Variation Perspective
  4.1  Introduction
  4.2  The embedded English dements in the newspapers
  4.3  Variation of code-switching patterns across newspaper registers
  4.4  Conclusion
5  The Metafunctions of Code-switching
  5.1  Introduction
  5.2  The metafunctions of code-switching
  5.3  Metaphorical and non-metaphorical code-switching
  5.4  Conclusion
6  The Immediate Context: Contextual Variables and Code-switching
  6.1  Introduction
  6.2  Registers and the contextual variables
  6.3  Code-switching and the variable of field
  6.4  Code-switching and the variable of tenor
  6.5  Code-switching and the variable of mode
  6.6  Conclusion
7  The Wider Context: Discourse and Code-switching
  7.1  Introduction
  7.2  Language in context of culture
  7.3  Code-switching, discourse, and ideology
  7.4  Code-switching and the power of English
  7.5  Conclusion
8  Conclusions and Implications
  8.1  Introduction
  8.2  A retrospect of the study
  8.3  From descriptive to prescriptive: Implications for language standardization and language planning  
  8.4  Suggestions for future studies
  8.5  Envoi
References
Appendices