【文章內(nèi)容簡介】
sh to express my sincere appreciation to all those who have offered me invaluable help during the four years of my undergraduate study here atTai Zhou Institute of Nanjing university of Science and Technology. Firstly, I would like to express my heartfelt gratitude to my supervisor, Professor Xu Guixiang, for her constant encouragement and guidance. She has walked me through all the stages of the writing of this thesis. Without her consistent and illuminating instruction, this thesis could not have reached its present form. Secondly, I should give my hearty thanks to all the other faculty members of the Department of English for their patient instructions in various courses and their precious suggestions for my study here. Lastly, my thanks would go to my beloved family for their loving considerations and great confidence in me all through these years. I also owe my sincere gratitude to my friends and my fellow classmates who gave me their help and time