BIBLIOGRAPHY

1. В.Л.Каушанская.   A Grammar of the English Language,  Ленинград Издательство 《Проовешение 》Ленинградское отделение, 1973
2. A. J. Thomson, A.V. Martinet.   A Practical English Grammar, Oxford University Press, 1985.
3. M. Yaghubyan, A. Khachatryan, L. Madoyan.  English Grammar in Practice, Yerevan “VMV-PRINT’’ Publishing House, 2015.
4.  
5. Internet Sources
6. http://web-local.rudn.ru/web-local/uem/inyas/3/Html3/Doc/functionOfMondVrbs.pdf   (Accessed 18.03.2018)          
7. Reference Books
8. F. Scott Fitzgerald. The Great Gatsby  Charles Scribner's Sons, 1924
9. Nicholas Sparks.  Safe Haven  Grand Central Publishing,  2011
10. Daniel Defoe.  Robinson Crusoe  Oxfords University Press, 1719
11. Oscar Wilde.  The Picture of Dorian Gray  Lippincott's Monthly Magazine, 1890
12. Lewis Carroll.  Alice’s Adventures in Wonderland,  Macmillan, 1865
13. http://www.myenglishpages.com/site_php_files/grammar-lesson-must-have-to.php (Accessed 15.04.2018)
14. http://www.edu.xunta.gal/centros/iesblancoamorculleredo/system/files/Have+to.pdf
15. (Accessed 15.04.2018)
16. http://www.englishservice.cz/download/Must%20have%20to.pdf (Accessed 15.04.2018)
17. https://www.englishpage.com/modals/haveto.html (Accessed 15.04.2018)
18. https://www.gymglish.com/en/english-grammar/must-vs-have-to (Accessed 18.04.2018)
19. https://www.ecenglish.com/learnenglish/lessons/have-and-must-modals (Accessed 25.04.2018)

Introduction

Chapter One

Modal Verbs “Must” and “Have to”

Chapter Two

“Must” VS “Have to”

Conclusion

Bibliography