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.
书信作文
第一段只写两句
第一句：I am writing this letter today to … 四六级无忧
第二句：My name is … and I am …
第二段按照题目要求写：
第三段只写三句
第一句：I sincerely hope you can take my letter seriously.
第二句：Your prompt response will be highly appreciated.
第三句：Thanks a lot for your time and consideration.
谚语作文
第一段只写四句
第一句：It is … that …
(整理)
四六级无忧
第二句：You cannot … until you …
第三句：The more you …, the more …
第四句：If you …, you …
第二段举例写
第一句：Examples can be easily found to make a case for this proverb.
第二句：Let’s take … for instance.
第三句：…
第四句：Another illustration of this is…