大学英语四级新题型考试第一部分是写作，写作写得如何会直接影响以后的做题。短文写得得心应手，对后面的答题可起到事半功倍的作用，否则就有可能功亏一篑。四级写作的体裁包括说明文、议论文和应用文。写作的素材或要求可以是中文、英文和图表。写作字数在120字以上，写作的时间为30分钟，但你应留少量时间作最后的检查。写作既考查你的思考判断能力，也考查你的表达能力。因此，你应对一些校园、社会新闻和常识有一定的认识和见解，并能够有层次地、结构完整地在文章中清楚表达你的观点。
一、文章的基本结构
文章是由段落构成，而段落的基本结构是由主题句、支撑句和结尾句所构成，它的具体结构可以用以下的图表加以表示：来源：www.examda.com
大学英语四级写作通常采用三段论模式，即：开头段(introduction)、主体段(body paragraph)和结尾段(conclusion)。
(一)开头段
对于大学英语四级的写作考题来说，限于篇幅，其开头段一般都不长。然而，这寥寥几句话却占有十分重要的地位，它表达的是整篇文章的主题思想。在议论文中，我们称之为中心论点，它起到驾驭全文的作用。一个意义清晰、明确的开头段，将有助于读者理解全文；一个精彩、新颖的开头段还能激起读者的阅读欲望。
(二)主体段
主体段的写作方法是多种多样的，而不同的方法会产生不同的效果，不同的方法需用不同的组织形式。因此，在动笔之前，必须先选择好所采用的方法，然后根据自己所选的方法确定相应的结构形式，才能把文章写好。
(三)结尾段
开头和结尾往往是读者注意最多的部分。开头引起读者注意，提出主题；结尾与开头呼应，使读者感觉全文论述完整，圆满结束。从某种意义上来说，结尾更容易给读者留下深刻印象。人们常把好的文章结尾称作是“画龙点睛”，可见结尾部分对整篇文章所起的作用。
二、写作实例分析
(一)说明文(1)
说明文一般用于解释和分析社会现象或社会问题。要求考生对某种社会现象产生的原因及其可能造成的种种影响或应采取的措施进行分析和说明。此类文章的基本结构如下：
Paragraph 1 phenomenon (现象)来源：www.examda.com
Paragraph 2reasons (effects)(原因或危害)
Paragraph 3suggestions or solutions (措施)
Drug abuse among young people has become more and more prevalent over recent years. (主题句)Statistics show that the number of youth drug users almost doubles in the past three years.(数据支撑) It is vital to analyze why drugs are so attractive to young people and what can be done to combat it.(结论)
Firstly, teenagers are under increasing pressure - this may be peer pressure or pressure to succeed for example. Drug use may help them escape reality, forget their problems, or simply feel more accepted by their friends.(原因1) In addition, through the media we are exposed to information that glamorizes drug use and makes it look attractive, particularly to young people.(原因2) Furthermore, teenagers are usually naturally curious about drugs, and drug dealers can take advantage of this curiosity for their own profit.(原因3)
High fines and prison sentences should also be imposed on drug dealers and users. (措施1) However, it is my own personal view that prevention is better than cure and so a good education programmed about the dangers of drug abuse is one of the most important steps any government should take. (措施2)
(二)说明文(2)
比较性说明文用于比较两种或几种类似的事物，要求考生通过比较它们各自的优点或缺点，说明自己的看法，并加以论证。这种文章的基本结构如下：
Paragraph 1 phenomenon(现象)
Paragraph 2advantages (优点)
Paragraph 3disadvantages (缺点)
Paragraph 4comments(结论)
A mobile phone is getting increasingly popular.(主题句) Statistics show that eight out of ten college students have got one.(数据支撑) However, as is the case with many issues, a mobile phone has both positive and negative aspects. (承上启下)
On the positive side, a mobile phone allows calls to be made instantly from almost any location. This can be vital where emergency services need to be called to the scene of a crime, accident or fire, where no public telephone is nearby. (优点1) Meanwhile, a mobile phone can serve as a connection to the Internet, which can be extremely convenient for obtaining information wherever you may be. (优点2)
The fact that a mobile phone allows a person to be contacted at any time can in itself be a disadvantage. For instance, an employee may, via the mobile phone, be constantly available to his employer and feels that he never leaves work. This may cause distress. (缺点1) Another disadvantage is the perceived health risks associated with its use. Some people believe that using mobile phones for long periods can damage the brain. (缺点2)
There is no denying that a mobile phone has both benefits and drawbacks but on balance perhaps the advantages of a mobile phone outweigh its disadvantages since a mobile has become an integral part of modern life. (结论)
(三)说明文(3)
图表写作也属于说明文的类型，这种文章通常结构是：
Paragraph 1change(变化)
Paragraph 2reasons or implication(原因或意义)
Paragraph 3conclusion (effects; implication)(结论)
The period 1995~2005 witnessed a rapid increase in the number of people in City X traveling abroad. As can be seen, in 1995, only about 10,000 people in this city went overseas while in 1995 this number quickly rose to 40,000. In 2005, however the number of overseas traveler surged to over 120,000, which is more than 10 times as many as that of 1995. (变化)
This change can be accounted for by a couple of factors. First, along with social and economy progress, the living standard of the Chinese people has been greatly enhanced, so they have enough money and time to travel abroad. Meanwhile, more and more people want to enjoy themselves and broaden their vision by visiting overseas historical places and experiencing exotic cultures. (原因)
Overseas travel has a profound effect on both individuals and the society. It can widen our people’s horizons, promote friendship and enhance cultural interaction. In the meantime, it can also boost our social economy and make our society more prosperous and dynamic. It’s good for our nation’s progress. (结论)
