4.阐述说明型

　　特点: 一般要求作者一开始就阐明观点或提出问题 ，接着摆出事实和理由加以论述，然后得出结论。内容可以是论人，论事，或论物。

　　论据可以是事实，科学数据，学者专家的权威观点及公认原则。

　　写作常用套语

　　开头：

　　No one can deny that…

　　It is often said that…

　　As everyone knows,….

　　Recently, /In recent years, there has been in increasing concern about the problem of…

　　It is well known that …has created certain problems for the society today.

　　The problem of…is becoming more and more serious.

　　论证或承接

　　To illustrate /prove this point, let us consider…

　　It has been reported /found/estimated that

　　To take …as an example,…

　　There are many examples to show that…

　　A number of factors will account for …

　　结尾

　　The best way to solve the problem is ...

　　In addition to /apart from this, another way to solve the problem of …is …

　　Effective measures should be taken to solve the problem.

　　Many things can contribute to solving the problem, but the following ones may be the most effective.

　　Our government should make stricter rules to

　　It is essential that quick necessary actions /steps /measures should be taken to deal with the phenomenon/ to cope with the problem.

　　It is high time we took proper steps actions to the terrible situation.

　　5.因果分析型议论文

　　特点：描述某种原因或现象以揭示其必然后果，或披露结果以追溯其各种原因。

　　写作常用套语

　　There are several reasons for…

　　There are many factors that account for /contribute to /responsible for …,but the following are the typical ones.

　　There are a number of serious effects on…Perhaps the most potential consequence is …

　　Taking into account all the relevant factors, /Judging from all the evidence offered, we may come to the conclusion that...

　　Therefore, it can be inferred that…

　　Accordingly, I recommend that…