During the process of my completing graduation paper, I have received
great of assistance, guidance from many people.
First of all, I wish to express my deepest thanks to the supervior – Mrs.
NGUYEN PHUONG THU, M.A who gave me base knowledge of study and
helped me to complete this graduation paper.
In addition, I am also graceful to many teachers in Foreign Language
Department of Hai Phong Private University who taught me through four
years of university and helps me have ideas and knowledge to found this
research.