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 involves 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 things in common.

They are similar in that.....

[2]. A bears some striking resemblances to B.