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ACKNOWLEDGEMENTS
First and foremost, I would like to express my sincere gratitude to my
supervisor, Assoc. Prof. Dr. Kieu Thi Thu Huong for her guidance, comments,
enthusiasm, encouragement and heartfelt sympathy throughout the whole research
process. Without her assistance, this thesis could not have been completed.
Second, my big thanks go to all the lecturers and staff of the Faculty of Post-
Graduate Studies, Hanoi University of Languages and International Studies,
Vietnam National University, Hanoi, for their profound knowledge and guidance
during my two years of studying at the Faculty.
Third, I would like to thank all the librarians for their helping me with the
reference materials and their efforts to make the atmosphere of reading rooms as
pleasant as possible.
Especially, I wish to express my special thanks to the students and teachers
at Nguyen Viet Xuan High School for their full support in completing the
questionnaires and their detailed answers to the questions in the interview.
I also wish to send my grateful thanks to examiners who will spend their
time reading and making comments on this thesis.
And finally, I wish to send my thanks to my family, relatives and friends
who always cheer me up and support me at hard time.
