声明
Abbreviations
Chapter one Introduction
1.1 Research Objectives
1.2 Purpose and Significance of this Research
1.3Structureof the Thesis
Chapter Two Literature Review
2.1 Previous Studies at Home and Abroadon Modal Verbs
2.2Corpus Research
Chapter Three Theoretical Framework
3.1 Definition and Characteristics of Modal Verbs
3.2 Semantic Classification and Grammatical Description of Modal Verbs
Chapter Four Methodology
4.1 Research Methodology
4.2 Research Design
Chapter Five Results and Discussion
5.1 Overall Frequency of Modal Verbs
5.2 The Results of the Semantic Meaning Distribution of Modal Verbs
5.3 Summary
Chapter Six Conclusion
6.1 Major Findings
6.2 Implications of this Research
6.3Limitations of this Research
参考文献
致谢
Appendix A