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引起听众的兴趣   
       - I'm going to be speaking about something that is vitally important to all of us. 
  - My presentation will help solve a problem that has puzzled people for years... 
  - At the end of this presentation you will understand why this company has been so successful for so long... 
  - I am going to be talking about a productthat could double your profit margins... 
  - the next ten minutes will change your attitude to sales and marketing... 
  - Over the next ten minutes you are goingto hear about something that will change the way your companies operate... 
  - By the end of this presentation you will know all there is to know about... 
 
 
 
 
告诉听众内容要点 
 
 
       - there are five main aspects to this topic (...the first, ... the second, ...a  
third,...another, ... the final) 
  - I am going to examine these topics in  
the following order (...first, ...next, ...afterthat, ...finally) 
  - I've  
divided my talk into five parts... 
  - I will deal with these topics in  
chronological order... 
  - I'm going to start with a general overview and  
then focus on this particularproblem (...in general, ...more  
particularly). 
  - I want to start with this particular topic,and then draw  
some more general conclusions from it (...specifically, ... in a wider  
context). 
  - there are (a number of) factors that may affect... 
  - We  
have to take into account in any discussion of this subject, the following  
considerations. 
  - We all ought to be aware of the following points. 
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