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rguments,  tone  and  intonation, consistency  and  other  good  application  of  the  speech.  Aside  from  oral  skills,  a successful  public  speech  that  serves  as  persuasive  or mobilized  functions  requires proper  organization  of  the  discourse.  In  order  to  find  out  the  realization  of  the coherence and consistency of relationships within sentences and paragraphs, the deep exploration of the theory of theme, hyper-theme and thematic progression patterns into  Michelle’s  speeches  has  not  only  certify  its  feasibility,  but  also  replenish  its research range. Besides, the youth who has much potential in changing everything, is the future of a country or even the whole world. They can bring the great benefits to the human beings if educated in the right way. Otherwise, they will cause much damage to the world if they are led by the wrong hands, so the cultivation of youth’s correct outlooks on the world and life is a crucial project. Nowadays, schools are the most important institution  where  the  youth  are  educated  and  education  is  performed  in  its  most organized  learning  form.  The  campus  speeches  delivered  by  Michelle  Obama  are good examples to analyze the essence and nature of campus speeches, for in it a lot of educational  concepts  and  ideas  enunciated  by  First  Lady  are  found  out,  and  the relationship between her and students is presented in detail.
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Chapter Two Literature Review 

2.1 Studies on Thematic Structure  
The term “theme” was first appeared in the founder of Prague School——Vitem Mathesius’ Functional Sentence Perspective in 1939，but it did not enter the circle of mainstream  linguistics  at  that  time  until  1960’s.  Nowadays,  with  the  unremitting efforts of some scholars at home and abroad, the theory centers on thematic structure has been focused on by various linguistic schools and reached a new high level. The concept of theme and rheme, with a long history, can date back to the Sophists in ancient Greek, and Plato is the first person who posits a binary structure of onoma and rhema  equivalent to theme  and  rheme  put  forward  by  successive  sholars  in  some sense. Just as mentioned above, Mathesius is the first one who proposed the theory of theme  and  expounded  the  theory  from  the  perspective  of  known  information  and unknown information. Then Firbas (1960’s), who is another representative of Prague School, defines theme as the sentence component bearing smallest communicative dynamism.  
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2.2 Studies on Thematic Progression Pattern 
The representative thematic progression patterns both at home and abroad are elaborated first. Then some empirical researches with the theory are introduced from different aspects in detail. So far, many linguists at home and abroad have put fo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。