第一段一般只写三句。第一句：It is widely believed by many people for sometime that ...第二句：One reason they think is that...第三句：The other reason they hold is that...第二段一般只写三句。第一句：While others argue that...第二句：They maintain that...第三句：They also claim that...第三段写四句。第一句：From what has been discussed above, we may come to the conclusion that ...第二句：On the one hand, ...第三句：On the other hand, ...第四句：Only in this way can we ...

图表作文：

第一段只写三句：第一句：As is shown in the graph above, we can see clearly that great changes have taken place in … from…to…第二句：The first …years saw…第三句：The last … years witnessed …第二段只写四句：第一句：What has caused this problem? It seems to me that there are…reasons.第二句：Firstly, …第三句：Secondly,…第四句：Finally,…第三段只写四句：第一句：How to solve the problem has become a hot issue among many people.第二句：For one thing, …第三句：For another, …第四句：Only in this way can we successfully solve the problem.

现象作文

第一段只写两句：第一句：In recent years, there has been…第二句：How to solve the problem has become a hot issue among many people.第二段只写四句：第一句：What has caused this problem? It seems to me that there are …reasons.第二句：Firstly,…第三句：Secondly,…第四句：Finally,…第三段只写四句：第一句：How to solve the problem has become a hot issue among many people.第二句：For one thing, …第三句：For another, …第四句：Only in this way can we successfully solve the problem.