四六级作文的技巧。
<一> 原因结果分析
3-1-1. 基本原因——分析某事物时，用此句型说明其基本的或者多方面的原因。
e.g:
[1]. Why ... ? For one thing.. For another ...
[2]. The answer to this problem invovles many factors. For one thing...
For another...... Still another ...
[3]. A number of factors , both physical and psychological affect ....
/both individual and social contribute to ....
3-1-2 另一原因——在分析了基本原因之后，再补充一个次要的或者更重要时用！
e.g:
[1]. Another important factor is ....
[2]. ... is also responsible for the change/problem.
[3]. Certainly , the ... is not the sole reason for .....
3-1-3 后果影响 ——分析某事物可能造成的后果或者带来的影响。
e.g:
[1]. It will produce a profound/far-reaching effect/impact on....
[2]. In involves some serious consequence for ........
< 二 > 比较对照句型
3-2-1. 两者比较—— 比较两事物，要说出其一超过另一个，或肯定一事物的优点，也肯定其缺点的时候用！
e.g:
[1]. The advantages gained from A are much greater than the advantages we gain from B.
[2]. Indeed, A carries much weight when compared with B.
[3]. There is no doubt that it has its negative effects as well as positive effects.
3-2-2 . 两者相同/相似——比较两事物共同都有或者共同都没有的特点时用！
e.g:
[1]. A and B have several thing in common.They are similar in that.....
[2]. A bears some sriking resemblance(s) to B.
