| Acknowledgements | 第1-4页 |
| Abstracts | 第4-9页 |
| Chapter Ⅰ Introduction | 第9-17页 |
| ·The Definition of Items | 第9-13页 |
| ·The Definition and Classification of Lexical Phrases | 第9-10页 |
| ·The Definition of Language Fluency | 第10-11页 |
| ·The Definition of Language Accuracy | 第11-13页 |
| ·The Influence of Lexical Phrases on Language Fluency and Accuracy | 第13-14页 |
| ·The Aim and Scope of the Present Study | 第14-16页 |
| ·The Organization of the Thesis | 第16-17页 |
| Chapter Ⅱ Literature Review | 第17-30页 |
| ·Lack of Research on Lexical Phrases in Improving Language Fluency and Language Accuracy | 第17页 |
| ·Theoretical Background for Lexical Phrases | 第17-21页 |
| ·Grammaticalized Lexis, Not Lexicalized Grammar | 第17-18页 |
| ·Balancing Learners' Grammatical and Pragmatic Competence | 第18页 |
| ·Overcoming Processing Constraints | 第18-20页 |
| ·Easy Acquisition: Frequency and Context-Dependence | 第20-21页 |
| ·Current Findings From Research | 第21-26页 |
| ·Corpus Linguistics | 第21-23页 |
| ·Discourse Analysis | 第23-24页 |
| ·Language Acquisition | 第24-26页 |
| ·Theoretical Models Accounting for the Development of Fluency | 第26-30页 |
| ·Accelerating Models | 第26-28页 |
| ·A Model of Production | 第26-27页 |
| ·A Model of Cognitive Development | 第27-28页 |
| ·Restructuring Models | 第28页 |
| ·Instance Models | 第28-30页 |
| Chapter Ⅲ Three Surveys of Lexical Phrases in Improving Fluency and Accuracy | 第30-59页 |
| ·Hypothesis | 第30页 |
| ·Participants and Aims of Three Surveys | 第30-32页 |
| ·Data Collection | 第32-34页 |
| ·Procedures | 第34-35页 |
| ·Analysis | 第35-59页 |
| ·The Monthly Compositions | 第35-41页 |
| ·Questionnaire | 第41-54页 |
| ·Oral Tasks | 第54-59页 |
| Chapter Ⅳ Results and Discussions | 第59-68页 |
| ·Findings of the Present Study | 第59-65页 |
| ·Application of Instance Model in View of FL Teaching | 第59-60页 |
| ·Lexical Syllabus and Focus Shifting | 第60-63页 |
| ·The Active Roles of Learners and Teachers | 第63-65页 |
| ·Pedagogical Implications | 第65-68页 |
| ·Intensive Practice in Fluency and Accuracy | 第65-66页 |
| ·Improving Recognizable Strategies | 第66-68页 |
| Chapter Ⅴ Conclusion and Suggestions for Further Research | 第68-71页 |
| ·Conclusion | 第68-69页 |
| ·Suggestions for Further Research | 第69-71页 |
| Bibliography | 第71-76页 |
| Appendix Ⅰ | 第76-86页 |
| Appendix Ⅱ | 第86-88页 |
