I would like to express my special thanks to the Almighty God for granting me good health, courage, inspiration and endless day to day blessings. However, there are several people to whom I am indebted for their wholehearted contribution in the successful accomplishment of this dissertation.
To start with, I am forever grateful to my supervisor Dr. Sebonde Rafiki. She has been a tremendous mentor to me by her genuine criticism, advice and constant encouragement during the time of all stages of my work. She has also engaged me in new useful ideas and skills on the art of research. I have really benefited from her great support, without it the completion of this task could not have been possible.
Besides my supervisor, I would also like to extend my gratitude to other lecturers in the department of foreign languages and literature at the College of Humanities and Social Science in the University of Dodoma from the core of my heart. First and foremost, I would like to thank Prof. V. Lakshmanan, Dr. Biseko, J. M, Dr. Sane, Dr. Chrispina, A, Dr. Selestino, Dr. Stanslaus, Dr. Magashi and the whole management team of the University of Dodoma.
Last but certainly not least, I would also like to express my appreciation to my fellow MA Linguistics students at the University of Dodoma 2016/2018. Their unforgettable cooperation both academically & socially has really provided me with an opportunity to learn many good things and put complex concepts and assignments into simple terms, this has made my coursework time to be an enjoyable moment. May the Almighty God bless you!