This thesis would not have been possible without constructive advice and helpfrom many persons.
First and foremost, I wish to express my sincere gratitude to my supervisor inChina Foreign Affairs University, Professor Ran Jijun, for his great advice andguidance on the content and format of this thesis, which is critical for revision.
Without his academic guidance, I could not have accomplished this thesis.
I would like to express my appreciation to all my teachers in the EnglishDepartment of China Foreign Affairs University, especially to Professor He Yinghong,Professor Guo Liqiu, Professor Sun Jisheng, Professor Zhang Lei, Professor SongAiqun, Professor Wei Lamei and Professor He Qun for everything I have learned fromthem during the two years at this university.
Also, the emotional support from my parents and my husband is no less importantthan the academic assistance.
In the end, I would like to express my thanks to my colleagues who helped collectuseful reference books and materials for me.
Time is a bird forever on the wing. For the past two years' post-graduate study, Ireally had a fulfilling life here. Not only have I met many knowledgeable teachers, butalso truthful friends. I would like to give my deep gratitude to many of them. First of all, Iam most grateful to Professor Zhang Ruwen, my supervisor, who offers me invaluableguidance and help both in my study and my life. Without her enlightening suggestions andinstructions, it would be a tough task for me to finish my thesis. Besides, I also appreciatemany other teachers who have offered their useful suggestions and inspire me a lot. Mythanks also go to my parents, grandparents, my classmates and my loving friends. Theircompany is a great consolation to me. I wish everyone could live in peace and happiness.
This thesis could not have been accomplished without a great deal of help frommy supervisor, my teachers, friends and family members.
First of all, my sincere thanks go to my supervisor who has offered me valuablesuggestions and kept patience for me for a long time.
Secondly, I would like to thank all the staff at the School of Foreign Languageswho has taught me in the past two and a half years. During my graduate study, I havebroadened my mind and expanded my horizon as well as shaped a much careful,critical and practical attitude,which is especially important in research.
Finally, I would like to extend my thanks to friends, classmates as well as myfamily members who have supported me at every stage of the writing of this thesis.
When this experiential and intellectual projects comes to its finishing point, Iwould like to extend my heartfelt gratitude to those who have helped me during theprocess of writing for their guidance, kindness and support.
First and foremost, I am deeply indebted to my supervisor, Professor Chai? whoread my draft with great patience and provided penetrating suggestions for revision. Ialso want to express my sincere gratitude to the professor who recommended manybooks and materials with regard to the genre theory and appraisal theory. I should thankall the teachers who have taught me in the previous two and a half year.
I also would like to thank my classmates,to name just a few. I have received quitea lot of suggestions and encouragements from them, especially at the time when I felj^lost and depressed in the course of writing.
Last but not least,my special thankfulness goes to my dear families for theirendless affection, constant understanding and support of my further study.
This study is only a small design and research, but it receives quite a lot of help inprocess. Without those help, this study would not reach this present level. I am grateful to allthose who have helped me on this study. I would like to express my sincere gratitude to mysupervisor-professor Baibin, for his incisive advices and valuable suggestions in achievementof this study. Though there is long geographic distance between us, it did not make anytroubles. Professor Bai 's comments to my study are always to the point both on content andstructures.
I would also like to thank my friend Xia Shiyang who gives great help and support to meduring this time. With his cooperation I could do the research in the fourth chapter to achievethis study successfully.
I would like to extend my deep gratitude to all those who have offered me a lot ofhelp and support in the process of my thesis writing.
First and foremost, my sincere thanks go to Professor Li Changbao, my supervisor,who has offered me numerous valuable comments and suggestions with incomparablepatience and encouraged me profoundly throughout my postgraduate study. Without hispainstaking teaching and insightful advice, the completion of this thesis would havebeen impossible.
Also, I owe many thanks to all the professors who have taught me during myprevious study in this university, for leading me into a challenging yet fascinating fieldof academic research. The profit that I gained from them will be of everlastingsignificance to my future research.
Last but not least, I am deeply indebted to my family and friends, who have helpedme and shared with me my worries, frustrations, and happiness.