论文致谢五：

　　This thesis would not have been completed without much assistance,encouragement and support from many people. I want sincerely to avail thisopportunity to express my cordial thanks to those who have granted me invaluableinstructions during the process of thesis writing.

　　First and foremost, I extend my greatest gratitude to Professor Chai Gaiying, myadvisor and supervisor, for her insightfol guidance and earnest help. She advised meto think over the selection of subject, to carry out a series of relevant research, and tolaunch the pilot study about my research at a very early time; and during the processof writing, she spent a lot of time to guide me in a right direction and provided manyuseful suggestions. It is under her strenuous help that I could complete this thesis intime.

　　Moreover,my sincere thanks go to my teachers in the College of ForeignLanguages at Zhejiang Gongshang University. They provided me a wonderfullearning environment and I learned and grew up a lot for their tireless instructionswhich will definitely exert deep influence on my later life.

　　Besides, I express my gratitude to my friends and fellow classmates. They sharedtheir knowledge with me and helped me out when I was faced with any difficultiesabout the thesis. They tried their best to give me their precious suggestions during theprocess of writing the thesis.

　　Last but not least, I am deeply in debt to my beloved family for theirencouragement, understanding and endless love during my life. They created the bestenvironment for me to focus on the thesis writing during the summer holiday,and allthis could not be possible without their selfless sacrifice and insistent support.