| 摘要 | 第1-7页 |
| Abstract | 第7-11页 |
| Chapter Ⅰ. Introduction | 第11-16页 |
| ·Rationale of the research | 第12-14页 |
| ·Purpose of the study and basic assumptions | 第14-15页 |
| ·The organization of the thesis | 第15-16页 |
| Chapter Ⅱ. Literature Review | 第16-32页 |
| ·Interlanguage and error analysis | 第16-21页 |
| ·Interlanguage | 第16-17页 |
| ·Contrastive analysis(CA)and error analysis(EA) | 第17-20页 |
| ·Computer-aided error analysis | 第20-21页 |
| ·Corpora and corpus linguistics | 第21-23页 |
| ·Learner corpora | 第23-25页 |
| ·Earlier studies on causal conjunctions in traditional grammar | 第25-28页 |
| ·Corpus-based studies on causation and causal conjunctions | 第28-32页 |
| Chapter Ⅲ. Methodology and Research Description | 第32-52页 |
| ·The four key conjunctions in this study:because,since, as and for | 第32页 |
| ·Source of data | 第32-37页 |
| ·SWECCL | 第33-34页 |
| ·BNC | 第34-37页 |
| ·Research tools | 第37-39页 |
| ·Statistical measures | 第39-40页 |
| ·Research procedure | 第40-52页 |
| Chapter Ⅳ. Findings and Discussion | 第52-70页 |
| ·The use of the four conjunctions in WECCL against BNC | 第52-60页 |
| ·Overall frequency of the four conjunctions in WECCL and BNC | 第52-55页 |
| ·Chinese EFL learners' pattern in use of the four conjunctions in WECCL | 第55-57页 |
| ·Position of causal conjunction | 第57-60页 |
| ·Collocation | 第60-63页 |
| ·Inappropriateness and errors in use of causal conjunctions in WECCL | 第63-67页 |
| ·Over preference for because | 第63页 |
| ·Misuse of conjunctions in part of speech | 第63-64页 |
| ·Errors in causal conjunction choice | 第64-66页 |
| ·Missing of causal conjunctions | 第66页 |
| ·Redundancy in use of Causal conjunctions | 第66-67页 |
| ·Causes of inappropriateness and errors | 第67-70页 |
| ·Interlingual factors | 第67-68页 |
| ·Intralingual factors | 第68-69页 |
| ·Input bias | 第69-70页 |
| Chapter Ⅴ. Conclusion | 第70-73页 |
| ·Pedagogical implications | 第70-71页 |
| ·Minimizing negative influence of L1 in teaching and learning | 第70-71页 |
| ·Applying Corpora in teaching and learning | 第71页 |
| ·Limitations of the present research | 第71-73页 |
| Bibliography | 第73-82页 |
| Appendix Ⅰ.Steps of sorting written files from BNC | 第82-83页 |
| Appendix Ⅱ.Examples of regular expressions used to remove sentences containing as whose meaning is other than cause/reason from BNC | 第83-85页 |
| Appendix Ⅲ.Referenced dictionaries used in the present thesis | 第85-86页 |
| Acknowledgements | 第86-87页 |
| 个人简历 | 第87-88页 |
| 发表的学术论文 | 第88页 |
