对于同一个话题，不同的人会写出差别巨大的的文章。之所以会有差异，除了语言水平及语言风格差异外，思维逻辑是非常重要的一个因素。一篇文章的逻辑形式对文章最终的效果有着举足轻重的作用。

不过，大家也不必过于担心自己写作逻辑的问题，毕竟雅思作文还是以语言等基本功为主要评判标准（雅思写作四个评分标准：任务完成、连贯与衔接、词汇、语法范围及精确度）。因此，在准备考试的过程中，要以语言基本功的提高为主，以改善自己的思维习惯为辅。思维逻辑是文化内在的东西，不是一朝一夕就能解决的，需要在长期的的语言运用中不断淬炼积累。

在这里，我想简单给大家讲一下如何运用英语写作逻辑。在看下文之前，大家必须明白：任何形式的逻辑都是为最好地完成写作任务服务的。

如何才能做到逻辑多样统一？
要做到这一点，就要知道有哪些论证方式。其实这里要讲的写作逻辑更前面讲过的观点句拓展有相通之处。不同的逻辑思维会产生不同写作角度，从而产生不同的拓展方式。常用的拓展形式有：举例子、摆事实、下定义、解释说明、对比、因果分析、引用、正面论述、反面论述、假设以及让步。

所以，可供你选择的逻辑形式是很多的。如果你的逻辑是从事实背景出发，你可以摆事实、举例子及引用；如果从名词概念出发，你可以解释说明或者下定义；若果从事物间的差异出发，你可以采用对比法或正反论；若果你想象力丰富，你可以假设；如果你不走极端，可以来一点让步写法；当然，要很你很擅长推理，可以采用因果分析。

下面我们以一个具体的例子来看看如何在文章中使用以上论述方式。
题目：The speeding up of life in many areas such as travel and communication has negative effects on society at all levels——individual, national, and global. To what extent do you agree or disagree?

以上是一个社会生活与科技影响相联系的一个话题，比较常见，讲的是在科技的促进下，我们的通讯交流及旅行速度都大大提升了，有人由此认为这对国家、个人及国际都产生了负面影响。 下面是一位学生的习文（已经由我修改过）。

起：The scientific and technological innovation has  borne abundant fruits, thus unprecedentedly quickening the pace of our life . Under this circumstance, people can travel to the other hemisphere in a single day, so can we make contact with others within a few seconds. While enjoying these amazing fruits, however, some people have raised concerns about possible impacks on individuals as well as the international communitity.
针对此话题，作者采用了背景开篇法，先叙述分析现代社会大环境，再利用题目中相关题意切入话题，而没有在急于亮出自己立场。

承：Indeed, there do exist some drawbacks resulting from the accelerating tempo of life. Among them, the most serious one is that individuals are likely to suffer from excessive pressure, which accounts greatly for the arising of some psychological problems such as anxiety. Besides, due to the amazing speed of transportation tools, more accidents are about to happen, taking away more property and lives.
此段以indeed承上启下，在逻辑上衔接上文末尾之义，并在此段作适当展开。此段属于让步段，一般情况下安排在主体论述之后，叫作先抑后扬；而本文作者反其道而行之，可称作欲抑先扬。作推展方法：主题句加例子,涵盖事实因果分析。

转：Nevertheless, we should not turn a blind eye to the fact that the speeding up of life has influenced our society positively to a large extent. One significant point is that the efficiency of life and work has been improved undoubtedly. As a result, more achievements can be made and more time can be saved to enjoy life rather than work against the clock in case of missing the deadline. Meanwhile, in terms of nations, the high efficiency contributes significantly to the advancement of economy and prosperity of the country. Another optimistic side is that the fast rhythm of life turns the world into a global village. For instance, the government officials can visit other countries frequently, which highly reinforces the cooperation among countries across the world. With regard to cross-cultural communication, a growing number of chances are provided for people to communicate internationally, thereby strengthening the bond among nations over the world to a large degree.
作者在这一段表现地比较优秀。在段与段的逻辑衔接上，用了一个nevertheless来扭转乾坤，转入下一段的论述，说明题中现象带来的好处超过弊端，从而显现自己的立场。

在分论点的衔接词上使用了：One significant point is that，Meanwhile，以及Another optimistic side is that。
分论点的论述及推展上：第一个采用了因果分析，标志词语as a result,及反向论证，标志词语rather than。第二个直接用事实说话。第三个用了例证法，标志词for instance,另外一个例子标志词with regard to，thereby导出结果.

合：Based on the above discussion, although the acceleration in the pace of life has led to some adverse effects, its positive influences in many aspects of society do outweigh its disadvantages. Therefore, it is of much significance that our society should make the best of the fast-paced life and benefit from it.
作者结尾处逻辑衔接上采用了较正统的做法，用了based on the above discussion来总结全文。不过，although及therefore两个逻辑词的使用使得作者观点比较公道，同时最后一句话所表达的愿望让结尾还算漂亮。

希望大家仔细看看上文，牢记一些常用方法，并把它们运用到自己的写作实践中去。有了扎实的语言基本功，再加上适当的逻辑方法，我相信你肯定会在雅思写作考试中有出色的表现。