一个好的结尾段应该满足如下几个功能：

1. 重申文章观点;

2. 总结主体段落的论点;

3. 升华主题。

这三个功能在文中如何体现呢?

请看到如下的例子：

【题目】Should the money invested into a university library be used to buy books or to buy computers? What do you think? Why?

【观点】I believe that to invest on computers would be a better choice.

【结尾段】In conclusion, given that computers have more valuable merits as an efficient, durable, manageable means for libraries of the new century, I therefore reinforce my standpoint to choose computers as my final choice for the investment.

在这个结尾段，整段就一句话，但实际上它既重申了观点：

I therefore reinforce my standpoint to choose computers as my final choice for the investment……

又总结了主体段落的三个论点理由：

computers have more valuable merits as an efficient, durable, manageable means for libraries of the new century.

这样的结尾段就是符合托福写作基本要求的，全文没有其他大问题的话拿24分都没有问题。那除了这样的结尾方式，我们还有没有其他的写作方法呢?

请看如下第二个例子：

题目：Should the money invested into a university library be used to buy books or to buy computers? What do you think? Why?

结尾段：Admittedly, books do have certain advantages over computers. They are easy to carry than computers. However, computers have more valuable merits as an efficient, durable, manageable means for libraries of the new century.I therefore reinforce my standpoint to choose computers as my final choice for the investment.

在上面这个结尾段中，第一、二句话先承认了书还是有一定好处的，比如容易携带。

接着立刻转折，强调电脑的好处大于书，所以作者选择电脑是理所应当的。

这样的写作方法把比较双方都提到了，体现了逻辑的完整性。

同时，由于电脑优点比书多，所以选电脑这个观点肯定是毋庸置疑的，这样写使得论证更加有力。