The Problems of Study The Objectives of Study

may, might, can, could. It can be seen from the following sentence in a medical context: We must make the hard choices to reduce the cost of health care and the size of our deficit .

5.2 Suggestions

In relation to the conclusions above, the suggestions are stated as the following. 1 It is advisable that the teachers or lecturers should develop the whole categories or types of modality to their students and introduce the the advantage of comprehending the value of modality in speech. 2 It is advisable that the audience or readers should learn English for specific purpose so they know some language varieties and find specific terms. 3 It is advisable that the audience or readers who are interested in English should learn and analyze the use of modality in Barack Obama’s speech. REFERENCES Ary, D. 1979. Introduction to Research in Education. New York : Holt, Rinehart and Winston. Bayanthi, N.M.U. 2011. Retorika dan Sistem Transitivitas dalam Pidato Pelantikan Presiden Amerika Serikat Barack Obama. Surabaya: Program Pasca Sarjana Universitas Negeri Surabaya. Thesis. Charles W. Kreidler. 1998. Introducing English Semantics. London and New York: Routledge. Denzin, N. K. Lincoln, Y.S. 1994. Handbook of Qualitative Research 2 nd ed. Thousand Oaks, CA:Sage Publications. Ellis, M. 2003. An Introduction to General Linguistics. Oxford: Oxford University. Fajariah, Lely. 2006. An analysis on the Text of SBY’s Speech of Modality. Medan: Skripsi. UMSU. Unpublished. Gall, M., Gall, J., Borg, W. 1993. Educational Research. Boston: Pearson Education, Inc. Gerot, Linda. 1994. Making Sense of Functional Grammar. Sydney: Australia. Gunawan, S. 2012. The Power of Persuasive Text Building in Barack Obama’s Presidential Compaign Speeches. Surabaya: Program Pasca Sarjana Universitas Negeri Surabaya. Thesis. Halliday, M.A.K, Hasan, R. 1999. Language, Context and Text : Aspect of Language in a Social Semiotic Perspective. Geelong: Deakin University. Halliday, M.A.K. 1994. An Introduction to Functional Grammar. Second Edition. London: Edward Arnold. Halliday, M.A.K. 1990. An Introduction to Functional Grammar. Melbourne: Hodder Stoughton. John, J. Saeed. 1997. Semantics. China: Blackwell Publisher.