| 摘要 | 第1-6页 |
| Abstract | 第6-10页 |
| Chapter 1 Introduction | 第10-14页 |
| ·Research background | 第10-12页 |
| ·Research objectives | 第12-13页 |
| ·General organization | 第13-14页 |
| Chapter 2 Literature review | 第14-38页 |
| ·The problem of terminology | 第14-15页 |
| ·Definition of lexical chunks | 第15-18页 |
| ·Classification of lexical chunks | 第18-23页 |
| ·Lexical chunks in language acquisition | 第23-28页 |
| ·Lexical chunks in first language acquisition | 第23-26页 |
| ·Lexical chunks in second language acquisition | 第26-28页 |
| ·Lexical Chunks in language output | 第28-38页 |
| ·Facilitating language production | 第29-30页 |
| ·Easing the burden of language processing | 第30-31页 |
| ·Promoting the fluency and accuracy of language output | 第31-34页 |
| ·Helping internalizing and establishing grammatical rules | 第34-38页 |
| Chapter 3 Research design | 第38-42页 |
| ·Research questions | 第38-39页 |
| ·Subjects | 第39页 |
| ·Data collection instruments | 第39-40页 |
| ·Research methods | 第40-42页 |
| Chapter 4 Data presentation and discussion | 第42-52页 |
| ·EFL learners’reliance on lexical chunks in output | 第42-44页 |
| ·Relationship between lexical chunks and learners’output | 第44-47页 |
| ·Relationship between lexical chunks and language proficiency | 第47-48页 |
| ·Error analysis of learners’use of lexical chunks | 第48-52页 |
| ·Overgeneralization | 第48-49页 |
| ·Mother tongue interference | 第49-50页 |
| ·Problems with prepositions in lexical chunks | 第50-52页 |
| Chapter 5 Pedagogical implications and suggestions | 第52-56页 |
| ·Raising learners’awareness of lexical chunks | 第52-53页 |
| ·Guaranteeing learners enough foreign language exposure | 第53-54页 |
| ·Practicing lexical chunks in exercises | 第54-55页 |
| ·Promoting autonomous learning | 第55-56页 |
| Chapter 6 Conclusion | 第56-58页 |
| ·Major findings | 第56-57页 |
| ·Limitations of the present study and suggestions for further researche | 第57-58页 |
| References | 第58-61页 |
| Appendix | 第61-67页 |
| Acknowledgements | 第67页 |
