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dience, successful speakers try all means to center on the audience. For instance, speakers try to recognize the different backgrounds of the audience adjust their language and message according to the audience’s feedback, and so on. In doing this, however, they do not loose themselves. They would actively adapt themselves to the audience, rather than be passively subject to them. For example:
 There will be setbacks and false starts. There are many who won't agree with every decision or policy I make as president. And we know the government can't solve every problem. But I will always be honest with you about the challenges we face. I will listen to you, especially when we disagree. And, above all, I will ask you to join in the work of remaking this nation, the only way it's been done in America for 221 years -- block by block, brick by brick, calloused hand by calloused hand.
Then how to understand human diversity? In principle, public speeches should be used by and for all people. They should not be a privilege of some population only. It serves people of different genders, races, nationalities, religions and so on. To be good public speakers necessitates the awareness of the diversity of human beings and tolerance of differences. As a speaker, we may find such awareness and tolerance helpful in deciding the purposes of our speech though it is easy said than done. So you should both consider your friends and enemies with your listeners.
 
 Ⅳ. Rhetorical Analysis in Obama’s speech
 There are many aspects for speakers to learn to make successful speeches in public, such as content, artistry, language, voice, fluency and gestures. The employment of rhetoric of speech can make the language more attractive and meaningful. However, the speaker must use them properly and correctly. It means we have to use proper rhetoric of speech in proper situations at proper time. In different situations, we have to use different rhetoric of speech to express our emotions and produce expected effects.
 4.1 Tropes and Euphemism
 Tropes mainly include simile and metaphor. Simile and metaphor are excellent ways to brighten the speech, to make the abstract ideas concrete, to clarity the unknown, and to express feelings and emotion.
 Some examples of metaphors are as follows in Obama’s speech:
 When the bombs fell on our harbor and tyranny threatened the world, she was there to witness a generation rise to greatness and a democracy was saved. Yes we can. She was there for the buses in Montgomery, the hoses in Birmingham, a bridge in Selma, and a preacher from Atlanta who told a people that "We Shall Overcome." Yes we can. A man touched down on the moon, a wall came down in Berlin, and a world was connected by our own science and imagination.
 Comparing “bombs fell on our harbor” to “second world war when America was deliberately attacked by Japanese on Pearl Harbor”　　

We are shaped by every language and culture, drawn from every end of this Earth; and because we have tasted the bitter swill of civil war and segregation, and emerged from that dark chapter stronger and more united, we cannot help but believe that the old hatreds shall someday pass; that the lines of tribe shall soon dissolve; that as the world grows smaller, our common humanity shall reveal it2self; and that America must p lay its role in u本论文由英语论文网提供整理，提供论文代写，英语论文代写，代写论文，代写英语论文，代写留学生论文，代写英文论文，留学生论文代写相关核心关键词搜索。