声明
List of Tables
List of Figures
List of Abbreviations
Chapter One Introduction
1.1 Research Background
1.2 Purpose and Significance of theResearch
1.3 Organization of the Thesis
Chapter Two Literature Review
2.1 Overview of Discourse Markers
2.1.1 Definitions of Discourse Markers
2.1.2 Classifications of Discourse Markers
2.1.3 Functions of Discourse Markers
2.2 Previous Studies onDiscourse Markers Abroad
2.2.1 Discourse-coherence Perspective
2.2.2 Grammatical-pragmatic Perspective
2.2.3 Relevance-theoretical Perspective
2.3Previous Studies on Discourse Markers at Home
2.4 Previous Studies on College Students’ Speeches
Chapter Three Theoretical Framework
3.1 Relevance Theory
3.1.1Principles of Relevance Theory
3.1.2Contextual Effects and Processing Efforts
3.1.3Ostensive-inferential Communication
3.2 Application of Relevance Theory to Discourse Markers
3.2.1 Discourse Markers and Cognitive Context
3.2.2Discourse Markers and Contextual Effects
3.2.3 Discourse Markers and Procedural Encoding
Chapter Four Research Methodology
4.1 Research Questions
4.2Self-constructed Corpora
4.2.1English-Speech Corpus of Native English Speakers(ESCNES)
4.2.2English-Speech Corpus of Chinese Learners (ESCCL)
4.3Research Tools
4.3.1AntConc 3.4.3
4.3.2 Log-likelihood Ratio Calculator
4.4Data Collection
Chapter Five Results and Discussion
5.1 General Analysis of DMs Used in the Two Corpora
5.1.1 Analysis of the Frequencies of Logical-connective DMs Used in the Two Corpora
5.1.2 Analysis of the Frequencies of Fillers in the Two Corpora
5.2 Analysis of Pragmatic Functions of Discourse Markers
5.2.1 Discussion on Pragmatic Functions of DMs in English Speeches
5.2.2 Differences in the Ways of Realization of Pragmatic Functions of DMs in the Two Corpora
5.2.3 The Reasons for the Differences
Chapter Six Conclusion
6.1 Major Findings of the Study
6.2 Pedagogical Implications of the Study
6.3 Limitations of the Present Study and Suggestions for Future Research
参考文献
致谢
Appendix A Publications
Appendix B Informative Abstract in Chinese
Appendix C Selected English Speeches from ESCCL
Appendix D Selected English Speeches from ESCNES
Appendix E Raw Data