在文章第一段(开头)用一长一短，且先长后短;在文章主体部分，要先用一个短句解释主要意思，然后在阐述几个要点的时候采用先短后长的句群形式，定会让主体部分妙笔生辉!文章结尾一般用一长一短就可以了。
优秀大学英语四级作文范文一：
作文题目：Blind Date
For this part, you are allowed 30 minutes to write a composition on the topic "Blind Date". You should write at least 120 words following the outline given below in Chinese:
1.相亲在中国已演化成一种潮流;2.人们对此的态度;3.我的看法。
参考范文：
Enjoying popularity across the whole society, blind date is becoming more common and acceptable in China today which appeals to countless people. However, for it, people's views differ.
According to a recent survey, young people are found quite positive about blind dates. They believe that blind date can help them experience more, make new friends, etc.
Even though most blind dates will not develop into romantic relationship that people search for, it still is an effective way for us to meet more people. However, some people think differently. They argue that people who go for blind date may value materials more than the personality. For instance, a girl may like to date a wealthy guy rather than a poor one.
To sum up, despite the above negative views on blind date, I still think it is a good way for the youngsters to socialize.
优秀大学英语四级作文范文二：
作文题目：
How to Solve the Housing Problem in Big Cities
参考范文：
The shortage of housing in big cities is one of the most serious problems of modern living. Increasing numbers of people are finding it difficult to conduct normal family and work duties because they either have nowhere to live or their houses are inadequate. This is a problem that requires an urgent solution because it leads to social unrest and economic inefficiency.
Some people suggest that the solution to the problem is to build more high-rise apartments, others are in favor of underground housing areas. I prefer the first idea, because it is cheaper to build above ground than below. Besides, people prefer to live in the open air and see the sunshine.
The second idea is not practical. One reason for this is that it is dangerous to construct living places under streets and buildings. Another reason is that it would take too much time to carry out, and in the meantime the number of people waiting for houses would increase, thus making the problem worse.
优秀大学英语四级作文范文三：
作文题目：
Internet Communication
参考范文：
Due to the wide use of computers and the development of Internet, more and more people like to chat on the Internet. We tend to pay more attention to Internet communication than to face-to-face contact.
As Internet communication is not limited by space, we can chat with others where there is Internet with our tools such as computers, mobile phones and pads. However, when we chat with others online, we cannot express our feelings fully. Just as the picture shows, the parents cannot touch or hug their child. We know that body language plays an important role in our communication, but the Internet communication cannot do this. For example, when we are sad, we need more love and warmth, a real hug from our parents or friends can mean much more to us than just words through Internet communication.
Therefore, though Internet communication brings convenience to our life, I still don't think the Internet communication can replace face-to-face contact.