在雅思的引言段中，一般会包括以下三个要素：

一、对于题目中提出的论述/问题的重述(restatement of the issue)

二、对于该论述/问题，表明自己的观点(your opinion of the issue)

三、对于文章的主体段落布局的预先交代(layout of the main body)

其中，要素一和要素二是必要组成部分，而要素三是可选择的组成部分，如果有的话，会使文章看上去条理更清晰，层次更分明。

我们来看下面的例子：

We are becoming increasingly dependent on computers. They are used inbusinesses, hospitals, crime detection and even to fly planes.

What things will they be used for in the future? Is this dependence oncomputers a good thing or should we be more suspicious of their benits?

这是一篇谈论我们对计算机的依赖性的议论文，主要问题针对的是：这种依赖性是一件好事还是我们应对它感到怀疑？下面我们来看这个引言段的范例：

Although no one can deny the fact that computers are transforming our worldand our lives in an astonishing way and that we rely on them for our dailyexistence. We should be aware of their potentially damaging impacts on manyaspects of our social life and remain skeptical of the over-computerization ofour world which is ardently advocated by some scientists. In my opinion,computers may jeopardize the overall wellbeing of humans in three fundamentalways if we misuse them.

该引言段很好地包含了以上提到的三个要素，现将该段按三要素分解并分析如下：

要素一 重述： Although no one can deny the fact that computers are transformingour world and our lives in an astonishing way and that we rely on them for ourdaily existence.

分析：以although开头的让步状语从句来进行重述，说明计算机正在急剧地改变着我们的世界以及我们对计算机的日常依赖。注意句型的运用：althoughno one can deny the fact that….. and that…..

要素二 观点：We should be aware of their potentially damaging impacts on manyaspects of our social life and remain skeptical of the over-computerization ofour world which is ardently advocated by some scientists.

分析：用We should be aware of。。。and remain skepticalof。。。这样的经典词组来表达作者对计算机潜在破坏作用的情醒认识以及对日益计算机化的世界的怀疑。

要素三 布局： In my opinion, computers may jeopardize the overall wellbeing ofhumans in three fundamental ways if we misuse them.

分析：用。。。in three fundamentalways来说明如果我们滥用计算机的话，它将对人类的整体福祉造成三个根本性的危害作用。这样的写法就为下文的主体段落作好了铺垫，即主体段应分为三个小段落，每段分别谈论其中一个危害之处。

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