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　　接上一篇《解读雅思写作首段技巧》，北京新航道竭诚为同学们提供雅思考试备考材料和相关考情动态，下面继续来看学习材料吧：

　　3). 定义法。即通过对话题词的定义的介绍，这种方法有难度，考生需要有渊博的知识，才能做到对名词的解释，但对特别明显的词语，考生可借鉴这种方法。

　　请看一例：

　　The main purpose of public libraries is to provide books and they should not waste their limited resources and space on providing expensive hi-tech media such as computer software, videos and DVDs. To what extent do you agree or disagree with this statement?

　　本题中的话题词为图书馆，可以解释的词也是图书馆比较方便容易。那么到底如何解释呢，比如说图书馆在传统意义上来看，是收藏书的地方，而现在因为科技发展，使得图书馆的意义发生改变，从而引出话题。这里同样可以用形式主语：

　　It is generally believed that public libraries are places with a large collection of books; however, the digital time has given it a new means of storing and retrieving information.

　　III Background 句型介绍：

　　从以上的分析，我们发现在内容上是有方法了，不难从内容上找材料，可是如果句型积累不多的话，写出来的句子也是无法得到的，所以接下来，为大家介绍下常用的句型。

　　1). It is … that …

　　It is … who … 强调句型

　　Eg It is the traditions in Beijing that attract many foreign tourists.

　　下面是考官范文里的句子：

　　It is the interaction of the two that shapes a person’s personality and dictates how that personality develops.

　　2). It is generally believed

　　It is the case that …

　　It is apparent that … 等形式主语

　　Eg It is generally believed that white-collar as well as blue-collar workers are suffering from psychological and physical stress stemming from work.

　　3). 状语前置

　　下面是剑6的范文中的句子:

　　In spite of this, the obvious benefits of computer skills for young children cannot be denied.

　　Just like movie stars, they live extravagant lifestyles with huge houses and cars.

　　4). 时间引导的叙述句型

　　Lately, the problem of unemployment has been brought to popular attention that governments at all levels place it on the agenda as the first matter.

　　根据以上北京新航道“雅思梦之队”的分析，相信同学们可通过这两个方面来做到背景句的描写，从而在开头就吸引考官的注意力，好的开始是成功的一半，有了好的开始，为考生在写作中做到思路清晰，以及节省时间都打了坚实的基础。预祝大家考试成功!

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