A now play such an important part in so many people’s lives that  

                                                       .

Obviously, A has both advantages and disadvantages.

  As is often pointed out, A makes us know                    

                             So that                     

                          . In addition,                   

                         . Yet here again, there is a danger. The

main problem with it is that                                  

                       . It is criticized on the grounds that it contributes (leads to rise in )                                 

                                  . Besides (In addition)    

                                        .

  In any case, whether the ultimate of A is good or not, one thing is certain that                                               

                                     . It is the uses to which

it is put that determine its value to society.

1、主题段，总体说明A有利有弊

2、有利的理由之一

3、理由二

4、不利一面

5、理由一

6、具体说明理由一

7、理由二

8、结论

                        has many advantages. In the first place,

                                              Second,    

                                           . Third,       

                                  . For all these advantages, it is really worthwhile to                                    .

  However just as everything has two sides, there are some disadvantages in                                         .

The most serious problem is                                 

                                . Besides,                

                                                       .

  Therefore, given an opportunity to                          ,

One must consider both sides of factors carefully before making up his mind. On the whole, it is a good thing to                     

                              , but on the other hand, one must mot lose sight for the disadvantages.

1、首先论述有利的一面

2、优势之一

3、优势之二

4、优势之三

5、由此得出的结论

6、不利的一面

7、不利因素一

8、不利因素二

9、平衡观点