声明
Acknowledgments
Abstract
摘要
Table of Contents
List of Tables and Figure
List of Abbreviations
Chapter One Introduction
1.1 General description of the study
1.2 Motivation for the study
1.3 Significance of the study
1.4 Structures of the thesis
Chapter Two Literature Review
2.1 Concepts of oral linguistic complexity
2.1.1 Definition of oral linguistic complexity
2.1.2 Measurement of oral linguistic complexity
2.2 Concepts of interaction-based task
2.3 Cognitive demand in oral complexity
2.3.1 Cognitive demand
2.3.2 Cognitive complexity in five-task framework
2.4 Review of relevant studies
2.4.1 Relevant studies abroad
2.4.2 Relevant studies at home
2.4.3 Evaluating the studies abroad and at home
Chapter Three Methodology
3.1 Research questions
3.2 Participants
3.3 Instruments and Treatment
3.3.1 Instruments
3.3.2 Treatment
3.4 Procedures
3.5 Data collection and analysis
3.5.1 Data colicction
3.5.2 Data analysis
Chapter Four Results and Discussion
4.1 The general interactive characteristics represented in different types of interaction-based tasks
4.2 The linguistic complexity represented in different types of interaction-based tasks
4.2.1 Lexical complexity
4.2.2 Syntactic complexity
4.3 The degree to which the linguistic complexity is affected by different types of interaction-based tasks
Chapter Five Conclusion
5.1 Major findings
5.2 Pedagogical implications
5.3 Limitations of the present study
5.4 Suggestions for the further research
References
Appendix