文摘
英文文摘
论文说明:List of Tables、List of Figures
Chapter One Introduction
1.1 Research background
1.2 Brief review of the corpus-based chunk studies in the second language context
1.3 Research purposes
1.4 Structure of the thesis
Chapter Two Theoretical Framework
2.1 Lexical bundles: definition and identification
2.1.1 Formal definition of lexical bundles
2.1.2 Operational definition or identification of lexical bundles
2.2 Main features of lexical bundles
2.2.1 Semantic transparency
2.2.2 Structural incompleteness
2.2.3 Sensitivity to registers
2.3 Classification of lexical bundles
2.3.1 Structural classification of lexical bundles
2.3.2 Functional classification of lexical bundles
2.3.3 Relationship between structural and functional categories
2.4 Other related concepts and theories
2.4.1 Bundle types,tokens and proportional distributions
2.4.2 Input frequency effects
2.4.3 Rules vs.exemplars
2.5 Summary
Chapter Three Research Design
3.1 Research questions
3.2 Learner corpus collection
3.3 Computer programs for text analysis
3.4 Procedures for text analysis
Chapter Four Results and Discussion
4.1 Target bundles in learners' untimed writing
4.1.1 Frequency distributions of the target bundles in learners' untimed writing
4.1.2 Individual target bundles in learners' untimed writing
4.2 High-frequency lexical bundles in learners' untimed writing
4.2.1 High-frequency bundle types, tokens and main features
4.2.2 Individual high-frequency lexical bundles in learners' untimed writing
4.2.3 Structural and functional distributions of the high-frequency lexical bundles learners' untimed writing
4.3 Summary
Chapter Five Conclusion
5.1 Major findings
5.2 Implications for teaching and learning lexical bundles
5.3 Limitations of this study and suggestions for future studies
References
Appendix Ⅰ
Appendix Ⅱ
Acknowledgements
在读期间发表的学术论文及研究成果