| Acknowledgements | 第1-7页 |
| Abstract | 第7-8页 |
| Abstract (Chinese version) | 第8-9页 |
| Preface (Chinese version) | 第9-16页 |
| Chapter I Introduction | 第16-28页 |
| ·Research background and significance | 第16-17页 |
| ·IELTS and IELTS writing module | 第17-26页 |
| ·IELTS examination | 第18页 |
| ·Writing module | 第18-19页 |
| ·Assessing criteria for writing | 第19-26页 |
| ·Research design | 第26-27页 |
| ·Thesis structure | 第27-28页 |
| Chapter II Literature review and theoretical framework of the study | 第28-48页 |
| ·Studies on coherence and cohesion | 第28-33页 |
| ·Coherence | 第28-31页 |
| ·Cohesion | 第31-32页 |
| ·The relationship Between Coherence and Cohesion | 第32-33页 |
| ·Brief studies of cohesive devices in English writing | 第33-40页 |
| ·Halliday's taxonomy of cohesive devices applied in the present study | 第34-40页 |
| ·Reference | 第34-36页 |
| ·Substitution / Ellipsis | 第36页 |
| ·Conjunction | 第36-39页 |
| ·Lexical cohesion | 第39-40页 |
| ·A basic structure of IELTS argumentive essay applied in the present study | 第40-43页 |
| ·A helpful pattern for organizing a paragraph and topic sentence | 第40-41页 |
| ·A usual pattern for organizing essay and thesis statement | 第41-43页 |
| ·Theory of thematic progression applied in the present study | 第43-48页 |
| Chapter III Analysis of two samples | 第48-78页 |
| ·Analysis of the good sample | 第48-69页 |
| ·Analysis of the organizational pattern | 第49-52页 |
| ·Analysis of the thematic structure | 第52-53页 |
| ·Analysis of the use of cohesion devices | 第53-69页 |
| ·Reference | 第54-58页 |
| ·Substitution | 第58-59页 |
| ·Ellipsis | 第59页 |
| ·Conjunction | 第59-63页 |
| ·Lexical Cohesion | 第63-69页 |
| ·analysis on a poor sample | 第69-78页 |
| ·Analysis of the organization | 第70-73页 |
| ·Analysis of the thematic structure | 第73-75页 |
| ·Analysis of the use of cohesive devices | 第75-78页 |
| Chapter IV Conclusion | 第78-84页 |
| ·Discussion of the findings | 第78-81页 |
| ·Suggestions for the teaching of writing | 第81-83页 |
| ·Limitation | 第83-84页 |
| References | 第84-86页 |
