大作文的考察形式是论说文，既是论说文，势必设计一些话题。在近几年的考试中，经由研究分析发现，雅思论说文最关注的是教育类的话题，此外科技类，媒体类，文化类，政府类，交通类等都有牵涉。但是面临那么多的话题和标题题目，能够做到在几分钟之内就想出充足公道有说服力的理由是很难题的一个任务。况且有时考题所出的标题题目非常偏，考生根本无法想到任何相关的理由。所以所谓的论据扩展难，就是指考生在面临有些论说文的挫折时，毫无头绪，无法扩展出论据，由于雅思写作的考题有个特点是标题题目出的很细节，有些详细抽象的话题也涵盖在toefl代考中，所以没有一定的积累的考生在面临这些题目的时候很难找到公道的理由来进行支持，继而使文章内容浅显没达到要求而导致拿了低分。
 

下面列举几题来认识一下此类标题题目：

1、Nowadays, some universities offer students skills that assist them to find employment, but some people believe that the main function of a university should be to provide students with access to knowledge for its sake. What is your opinion?

2、In many countries the number of elderly people is increasing fast. Does this trend have more positive or negative effects on the society?

3、One long-distance flight consumes fuel which a cars uses in several years’ time, but they cause the same amount of pollution. So some people think that we should discourage non-essential flights, such as tourist travel, rather than to limit the use of cars. To what extent do you agree or disagree with this view?

上面三个标题题目难点在于如何扩展ielts代考文章。一般考生拿到此类标题题目都有些不知所措，不知如何扩展正文的论据，觉得此类话题不认识，或者过于理论，没有支持的理由，好比第一题，通过审题，是关于大学传授知识和大学传授找工作的技能的双边论证，良多考生以为大学本来就是传授知识的地方，要找到公道的论据进行扩展非常难题。专家以为应对此类标题题目，就是要以详细对付抽象和理论，考生可以列举一些例子，如通过大学的知识传授为将来的就业、糊口的改变以及心理上的成熟等都起了重要的作用，而大学传授技能也是因为就业的严重形势所迫。我们可以将提纲列举如下：

It is believed that the basic mission of universities is to conduct research and provide education based on it.

First, a good command of basic knowledge lays a solid foundation for other courses.

Second, through basic and theoretical courses, students can learn to improve their self-study as well as problem-solving ability.