第一部分、四六級作文：闡述主題題型作文寫作步驟
　　英語四六級作文闡述主題題型，要求考生從一個主題出發(fā)，按照提綱的要求進(jìn)行寫作，如：2005年12月四級作文、2005年6月四六級作文、2003年1月四級作文。對這類題型，通常分為三個步驟來寫：

　　第一段、總結(jié)描述
　　先用一句話描述當(dāng)今社會的某種現(xiàn)象或者事物，并且用簡單的話擴(kuò)展說幾句：
　　主題句＋擴(kuò)展句

　　第二段、舉例說明現(xiàn)象
　　主題句＋舉例1+舉例2+舉例3

　　第三段、表明自己的觀點并結(jié)束全文
　　在結(jié)尾的時候，一定要表明自己的觀點。

　　第二部分、闡述主題題型作文寫作范文練習(xí)
　　［實戰(zhàn)演練］
　　Directions：For this part, you are allowed thirty minutes to write a composition on the topic Pollutions. You should write at least 120 words and you should base your composition on the outline below:
　　1、目前污染問題已經(jīng)成為人們普遍關(guān)注的一個問題；
      2、造成污染問題的原因；
　　3、解決辦法。

　　［寫作模板：架構(gòu)階段］
　　第一段：
　　主題句：________has become a serious problem about which we worry.
　　擴(kuò)展句：1、Wherever we turn, we find ________.
　　　　　　2、And this is threatening the survival of the human race.

　　第二段：
      主題句：The real problem with _______ is _____.
　　擴(kuò)展句：1、It is ____ that _____.
　　　　　　2、It is also _____ that ________.
　　　　　　3、Ironically, it is _______ itself that _____.

　　第三段：
　　結(jié)尾句：We must do something to solve _____.
　　擴(kuò)展句：1、First of all,we must let everyone see the imprtance of ____.
　　　　　　2、Then we _____
　　　　　　3、Only when everyone makes a joint-effcet to ____can this problem be solved.

　　［寫作模板：填充階段］
　　第一段：
　　主題句：Pollution has become a serious problem about which we worry.
　　擴(kuò)展句：1、Wherever we turn, we find pollution: polluted air, polluted water, polluted food and polluted environment.
　　　　　　2、And this is threatening the survival of the human race.

　　第二段：
      主題句：The real problem with pollution is people.
　　擴(kuò)展句：1、It is people that throw millons of tons of waters into rivers, lakes and seas.
　　　　　　2、It is also people that destroy tbiologic balance of nature.
　　　　　　3、Ironically, it is the people themselves that must breathe, eat and drink their own pollutants.

　　第三段：
　　結(jié)尾句：We must do something to solve our environmental problems.
　　擴(kuò)展句：1、First of all,we must let everyone see the imprtance of keeping our enviroment clean.
　　　　　　2、Then we make more strict laws to protect our surroundings from being spoiled.
　　　　　　3、Only when everyone makes a joint-effcet to eliminate pollution can this problem be solved.

　　第三部分、范文
　　Pollution has become a serious problem about which we worry.Wherever we turn, we find pollution: polluted air, polluted water, polluted food and polluted environment.And this is threatening the survival of the human race.

　　The real problem with pollution is people.It is people that throw millons of tons of waters into rivers, lakes and seas.It is also people that destroy tbiologic balance of nature. Ironically, it is the people themselves that must breathe, eat and drink their own pollutants.

　　We must do something to solve our environmental problems.First of all,we must let everyone see the imprtance of keeping our enviroment clean.Then we make more strict laws to protect our surroundings from being spoiled.Only when everyone makes a joint-effcet to eliminate pollution can this problem be solved.