| 摘要 | 第3-4页 |
| Abstract | 第4页 |
| Contents | 第5-7页 |
| Chapter1 Introduction | 第7-10页 |
| 1.1 The Background of the Study | 第7-8页 |
| 1.2 The Purpose of the Present Study | 第8-9页 |
| 1.3 The Outline of the Present Study | 第9-10页 |
| Chapter2 Literature Review | 第10-25页 |
| 2.1 Lexical Phrases | 第10-15页 |
| 2.1.1 The Formulaic Nature of Language | 第10-11页 |
| 2.1.2 The Definition of Lexical Phrases | 第11-12页 |
| 2.1.3 Working Definition of Lexical Phrases in Present Study | 第12页 |
| 2.1.4 The Classification of Lexical Phrases | 第12-14页 |
| 2.1.5 The Functions of Lexical Phrases | 第14-15页 |
| 2.2 Oral Fluency | 第15-18页 |
| 2.2.1 The Definitions of L1 Oral Fluency | 第15-16页 |
| 2.2.2 Definitions of L2 Oral Fluency | 第16-17页 |
| 2.2.3 The Operational Definition of L2 Oral Fluency | 第17-18页 |
| 2.3 Theoretical Basis of Present Study | 第18-21页 |
| 2.3.1 Instance Models | 第18页 |
| 2.3.2 Kormos’ Model of L2 Production | 第18-21页 |
| 2.4 The Empirical Studies of the Relationship between Lexical Phrases and L2 Oral Fluency at Home and abroad | 第21-23页 |
| 2.4.1 Empirical Studies abroad | 第21-22页 |
| 2.4.2 Empirical Studies in China | 第22-23页 |
| 2.5 Summary | 第23-25页 |
| Chapter 3 Research Methodology | 第25-32页 |
| 3.1 The Introduction of Sample Corpus | 第25-26页 |
| 3.2 The Research Questions in the Present Study | 第26页 |
| 3.3 Subjects | 第26-27页 |
| 3.4 Cool Edit Pro | 第27-28页 |
| 3.5 Data Analysis | 第28-32页 |
| 3.5.1 Analysis of Oral Fluency | 第28-30页 |
| 3.5.2 The Process of Counting Lexical Phrases in Each Subject | 第30-32页 |
| Chapter 4 Results and Discussion | 第32-44页 |
| 4.1 Characteristics of L2 Oral Fluency between Two Groups | 第32-35页 |
| 4.1.1 Characteristics of Speaking Rate (SR) between the Two Groups | 第34页 |
| 4.1.2 Characteristics of Articulation Rate (AR) between the Two Groups | 第34页 |
| 4.1.3 Characteristics of Mean Length of Run (MLR) between the Two Groups | 第34-35页 |
| 4.1.4 Characteristics of Phonation/time Ratio (PTR) between the Two Groups | 第35页 |
| 4.1.5 Characteristics of Average Length of Pause (ALP) between the Two Groups | 第35页 |
| 4.2 Results of Use of Lexical Phrases between the Top Group and the Bottom Group | 第35-39页 |
| 4.2.1 Comparison of Use Frequency of Lexical Phrases | 第35-36页 |
| 4.2.2 Comparison of Diversity of Lexical Phrases | 第36-38页 |
| 4.2.3 Comparison of Average Length of Lexical Phrases | 第38-39页 |
| 4.3 Discussion of the Results | 第39-44页 |
| 4.3.1 Discussion of the First Research Question | 第39-41页 |
| 4.3.2 Discussion of the Second Research Question | 第41-44页 |
| Chapter 5 Conclusions and Implications | 第44-48页 |
| 5.1 The Major Findings in the Present Study | 第44-45页 |
| 5.1.1 The Characteristics of Oral Fluency of the Two Groups | 第44页 |
| 5.1.2 The Major Findings of Lexical phrases Use of the Two Groups | 第44-45页 |
| 5.2 Some Pedagogical Implications | 第45-47页 |
| 5.2.1 Building up a Sense of Lexical Phrases | 第45-46页 |
| 5.2.2 Paying Attention to Pronunciation, Form and Meaning of Lexical Phrase | 第46页 |
| 5.2.3 Practice Is Very Important | 第46-47页 |
| 5.3 The Limitations of Present Study | 第47-48页 |
| Bibliography | 第48-52页 |
| Appendix 1 The Record Transcript of One Subject | 第52-54页 |
| Appendix 2 Oral Fluency Data of All Subjects | 第54-55页 |
| Appendix 3 Lexical Phrases Data of All Subjects | 第55-56页 |
| Acknowledgements | 第56-57页 |
| 在读期间公开发表论文及科研情况 | 第57页 |
