1. 研究目的与意义（文献综述）

the public speech given by the president of the united states has a profoundly social, political and cultural influence around the world，which has not only the same characteristics of the style of both spoken and written language, but also different from each other. on one hand, in public speech, the advantages elevated by the spoken language is understandable, vivid, inspired, on the other hand, the disadvantages abandoned by the spoken language is loose and disorder. while the public speech also keeps the solemn elegance feature of the written language. all of these features make people get the feelings of confident, affectionate, passionate and appealing from the public speech, especially in president’s speech.

since obama was the first black president in america and achieved reappointment, his speeches given during his reign period are popular with scholars. throughout the review of the past research, the present domestic research focuses on critical discourse analysis, which studies the surface of language forms, reveals the relationship among language power and ideology. critical discourse analysis is widely used in political discourse analysis and is also used by obama in his speech to spread his will. in a word, critical discourse analysis put language social character as analysis purposes. throughout the reviews by foreign scholars, some scholars obey the principles in the following: stylistic is “the study of literary discourse from a linguistic orientation” and takes “a view that what distinguishes stylistics from literary criticism on the one hand and linguistics on the other is an essential mean of linking the two”（widdowson, 1975:3）.

the paper finds that the researchers mainly focus on the angles of genre and the political content. while this paper analyzes practical stylistic features, and use halliday's systemic functional grammar to do the theoretical framework of mr. obama's speech style characteristics analysis. the concrete perspectives of analysis are mainly on the diction, sentence, discourse, rhetoric, semantics, syntax and so on. this paper will also use the theory of situational context as the foundation and collect the public speech given by obama which during his campaign as the corpus. through the analysis of stylistics characteristics of obama’s campaign speech, the paper helps the audience to have a better understanding of the speech at the theoretical and let the audience appreciate the aesthetic value of the speech as well.

2. 研究的基本内容与方案

this paper will use qualitative and quantitative research methods, analyzing obama’s public speech in-depth. first of all, through the discourse analysis of political speech, the paper reveals the relationship between linguistic patterns of choice and the transferred meaning, which help people have a better understanding of the connotation of meaning in the discourse. what’s more, using halliday’s three metafunctions and systemic functional grammar to analyze obama’s public speech, such as personal pronoun, tone, tense and modal category in the speeches.

the study found that the main characteristics of obama's public speech are subjectivity, informational and persuasive. obama prefers using the personal pronoun “we” in the statements and present tense. also, obama uses a lot of the second person pronoun “you” in his speech, but these are most in the situations when he referred to people’s contribution to the country. these features of language can not only enhance the speaker’s ideas of his expression, but also build a comfortable relationship between the speaker and the audience, and make the speech more convincing, fascinating as well, so the speaker can win the support of the audience.

finally, the paper will also take the perspective of pragmatics speech act theory to study the pragmatic functions of obama’s speech, which focus on the analysis of the following three aspects—vocabulary diction, syntax means and rhetoric analysis.

3. 研究计划与安排

before 20th january: settlement of the title

before 20th march: submission of the outline

before 25th april: submission of the first draft

4. 参考文献（12篇以上）

[1] brown, j. amp; yule, g. discourse analysis. [m]. cambridge: cambridge university press,1983.

[2] burch, d amp; o’ tool, m. functions of style[c]. london: pinter publishing limited, 1988.

[3] dr. kunal sarkar. presidential address [j]. indian journal of thoracic and cardiovascular surgery, 2015.