追根溯源法

　　请看下面的例子：

　　There are social, medical and technical problems associated with the use of mobile phones. What forms do they take? Do you agree that the problems outweigh the benefits of mobile phones? (高分范文P76)

　　这个题目中给出的话题是mobile phone，所以考生可以从它产生的原因来考虑，就是科技的繁荣，而科技的繁荣，手机的广泛使用是在20世纪末，这样背景句就有内容可写了。当然要通过相应的句型来写了。如

　　… (time) witnessed …

　　这个背景句就可以写成：The late 20th century witnessed the boom of science and technology, which gave rise to a series of technological innovations, including the mobile phone.

　　再看一例：

　　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?

　　这题要求大家讨论大学是提供职业技能还是传授知识。那从传统观点来看，大学是传授知识的地方，为什么会提出要传授技能呢，所以这里考生也可以用追根溯源法思考下，大家肯定可以想到是由于找工作已经成为当今教育的目的之一了，所以很多大学就转移到以传授技能为主了。那当然还是要结合句型，这里可以用as 引导的原因状语从句。

　　参考：As job-hunting has become one of the main purposes of university education, the majority of the universities tend to offer vocational trainings to prepare the students for their future career.

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