| Acknowledgment | 第3-4页 |
| Contents | 第4-7页 |
| List of Tables | 第7-8页 |
| List of Figures | 第8-10页 |
| Abstract | 第10页 |
| 摘要 | 第12-14页 |
| Chapter One Introduction | 第14-18页 |
| Chapter Two The Nature and Description of Lexical Chunks | 第18-34页 |
| 2．1 Different and Overlapping Labels for Lexical Chunks | 第18-19页 |
| 2．2 Definitions of Lexical Chunks | 第19-24页 |
| 2．2．1 Michael Lewis's Definition in an L2 Acquisition Perspective | 第19-21页 |
| 2．2．2 Nattinger and DeCarrico's Definition in a Functional Perspective | 第21-22页 |
| 2．2．3 Other Scholars' Definition in a Psycholinguistic Perspective | 第22-23页 |
| 2．2．4 Conclusions on the Definitions of Lexical Chunk | 第23-24页 |
| 2．3 Classifications of Lexical Chunks | 第24-32页 |
| 2．3．1 Hakuta's Invariable Routines and Variable Patterns | 第25页 |
| 2．3．2 Michael Lewis's Taxonomy of Lexical Chunks | 第25页 |
| 2．3．3 Nattinger and DeCarrico's Categories of Lexical Chunks | 第25-26页 |
| 2．3．4 Reclassification of Lexical Chunks | 第26-31页 |
| 2．3．5 Summary on Classifications of Lexical Chunks | 第31-32页 |
| 2．4 Clarification of Two Terms: Idioms and Lexical Chunks | 第32-33页 |
| 2．5 Summary | 第33-34页 |
| Chapter Three A Lexical Chunk Approach to Low-Proficient Learners | 第34-58页 |
| 3．1 An LC Approach to Low-Proficient Learners in Foreign Language Learning | 第34-43页 |
| 3．1．1 The Linguistic and Psycholinguistic Traits of Low-Proficient Learners | 第34-40页 |
| 3．1．1．1 Vocabulary as a Primary Stumbling Block | 第34-36页 |
| 3．1．1．2 Information Processing Inhibition | 第36-38页 |
| 3．1．1．2．1 Retroactive Inhibition | 第36页 |
| 3．1．1．2．2 The Limited Processing Capacity | 第36-38页 |
| 3．1．1．3 Grammar as a Stubborn Stumbling Block | 第38-39页 |
| 3．1．1．4 The Limitation of Logic-Based Cognition | 第39-40页 |
| 3．1．2 Grammaticalised Lexis | 第40-43页 |
| 3．1．2．1 Grammaticalised Lexis on the Level of Lexicons Learning | 第40-41页 |
| 3．1．2．2． Grammaticalised Lexis on the Level of Grammar Learning | 第41页 |
| 3．1．2．3 The Benefits of Statistic Cognition | 第41-42页 |
| 3．1．2．4 Peters' Perspective of Cyclical Fashion | 第42-43页 |
| 3．2 An LC Approach to Low-proficient Learners in Language Accurate Production | 第43-49页 |
| 3．2．1 Less Accuracy in Language Production and the Reasons | 第45-47页 |
| 3．2．1．1． Less Accuracy in Language Production | 第45-46页 |
| 3．2．1．2 The Reasons of Inaccurate Production | 第46-47页 |
| 3．2．2 The Appropriacy of LC to Low-proficient Learners in Language Production | 第47-49页 |
| 3．2．2．1 Accessibility as Prefabricated Chunks | 第48-49页 |
| 3．2．2．2． Accessibility as Predicting Chunks | 第49页 |
| 3．3 An LC Approach to Low-proficient Learners in Re-establishing Positive Attitudes | 第49-57页 |
| 3．3．1 Previous Attitudes | 第50-53页 |
| 3．3．1．1 Remaining Desires of Learning | 第50-51页 |
| 3．3．1．2 Originally Low Self-Confidence | 第51-52页 |
| 3．3．1．3 Less Intrinsic Motivation | 第52-53页 |
| 3．3．2 Re-establishing Low-proficient Learners' Positive Attitudes | 第53-57页 |
| 3．3．2．1 Expectancy Theory | 第54-55页 |
| 3．3．2．2 Positive Feedback | 第55页 |
| 3．3．2．3 Linguistic Confidence | 第55-56页 |
| 3．3．2．4 Attribution Theory | 第56-57页 |
| 3．4 Summary | 第57-58页 |
| Chapter Four Pedagogical Application of a Lexical Chunk Approach to Low-proficient Learners' Writing | 第58-71页 |
| 4．1 Previous Applications of LC in Teaching Practice | 第58-60页 |
| 4．1．1 Nattinger and Decarrico'S Application of LC in Teaching Practice | 第58-59页 |
| 4．1．2 Michael Lewis's Application of LC in Teaching Practice | 第59-60页 |
| 4．1．3 Other Scholars' Application of LC in Teaching Practice | 第60页 |
| 4．2 The Reasons for Teaching Lexical Chunks in Low-proficient Learners' Writing | 第60-61页 |
| 4．3 Theoretical Standpoints | 第61-62页 |
| 4．3．1 The Learner-Centered Learning Model | 第61页 |
| 4．3．2 The Cyclical Learning Mode | 第61-62页 |
| 4．3．3 Inductive Learning Model | 第62页 |
| 4．4 Teaching procedures | 第62-66页 |
| 4．4．1 Teaching Procedures of Common-Used LCs | 第63-64页 |
| 4．4．2 Teaching procedures of discours-constructed LCs | 第64-66页 |
| 4．5 Methodology | 第66-71页 |
| 4．5．1 Hypothesis | 第66页 |
| 4．5．2 Participants | 第66-67页 |
| 4．5．3 Data Collection | 第67-69页 |
| 4．5．3．1 Identification of Lexical Chunks | 第67-68页 |
| 4．5．3．2 Accounting of Lexical Chunks | 第68-69页 |
| 4．5．4 Result and discussion | 第69-71页 |
| 4．5．4．1 Comparison of Numbers | 第69-70页 |
| 4．5．4．2 Discussion | 第70-71页 |
| Chapter Five Conclusion | 第71-73页 |
| Bibliography | 第73-77页 |
| Appendix | 第77-79页 |
| 在读期间发表论文简介 | 第79页 |
