It is a significant and unforgettable experience for me to spend such a long time onwriting, modifying and polishing this thesis. Many kind-hearted people give me a greatamount of help, professional advice and encouragement. Thus, here I would like toexpress my sincere gratitude to them.
First of all, I will show my sincere thanks to my supervisor Professor Jia Aiwuwho has given me invaluable guidance and constant support and encouragementthroughout the whole processes. During my study of English education in this two ahalf years and the witting of this thesis, she has always been generous to offer me usefulsuggestions, answer my question and discuss research questions with me. Her detailguidance and helpful comments on my thesis encourage me to overcome difficultiesand think more critically during the processes of writing.
Secondly, I will also express my sincere gratitude to other professor and teacherswho had give me constructive suggestion to my thesis and thanks to them forinstructing me to construct my knowledge in English teaching in the past two and a halfyears.
Thirdly, I want to thank all my affectionate classmates and friends. During the twoa half years' study and the writing of this thesis, they have given me a lot of support andencouragement in their own ways.
At last, I will give the deepest gratitude to my family for their regretless supportand love to me.
First and foremost, I would like to express my heartfelt gratitude to mysupervisor, Professor Jia Aiwu. I have benefited tremendously from her criticalthinking and insightful viewpoint. Through his patient instruction,I finally focusedon the object studied in this thesis, and obtained valuable advice on aspects rangingfrom frame work constructing and data collection to elaborated analysis.
Secondly, I'm profusely grateful to my respected predecessors and teachers.
Without their precious suggestions, I could not have come this far in this thesis.
Moreover, I owe my thanks to my family and friends, who have always supportedme with their generous encouragements and praises.
Last but not least, I sincerely thank my fellow classmates. We share joys andanxieties, which propels us forward together throughout the arduous journey.