接下来进入body段的写作部分，先说汽车的好处，解释后马上通过国内外例子的阐述进行论证。
首先，汽车产生的一个重要影响是，由于流动性的极大提高，人们的休闲方式也随之发生重大的改变。人们不仅能够住在离工作地点比较远的地方，在闲暇时还能四处去旅行，旅行一天，一星期或更长的时间都可以。在美国，汽车显然是最常用的交通工具，而且对旅游业产生巨大的影响。在北京，我们可以看到，现在有越来越多的人在周末和节假日期间开车外出旅游。
Above all, One important impact the automobile has had is that the greatly increased mobility led to significant changes in leisure lifestyle. In addition to being able to live far from one’s place of work, people could travel far and wide for leisure, be it only for a day trip , a weekend, or an extended period of time. In the U.S.the car is by far the most common mode of transportation and has greatly impacted the growth of the tourist industry. Again , we are beginning to see people in Beijing with cars going out of the city on weekends and holidays.
上段说完汽车的好处后，后面说出汽车对环境的影响，起承转合下，进行过渡。里面把汽车尾气，二氧化碳，资源浪费进行论证排比的讲解，达到了论证充分的作用。
汽车的使用严重威胁着我们的环境。如果这个趋势未能及时得到控制，在未来，地球就不再适合人类生存了。人们不得不面对这个无法逃避的现实。每年数以千计的私家汽车排出数吨尾气，造成严重空气污染。二氧化碳引起全球范围的温室效应，导致海平面上升并对天气产生不良影响。此外，由于私家车的生产，越来越多的能源也遭到了浪费。为了建设资源节约型和环境友好型的社会，人们理应少开车。
The use of cars remarkably threatens our environment. If such a tendency is not brought under control in time, the Earth will no longer be a suitable place for humans to survive in the future. People have to face the music . It is a reality from which no one is able to escape . Every year, thousands of private cars are emitting tons of exhausted gas that seriously pollutes the air. The carbon dioxide leads to the worldwide greenhouse effect, which causes the sea level to rise and produces negative impacts on weather. In addition, more energy is being wasted because of the production of private cars. In order to build a resource-conserving and environment-friendly society , people ought to reduce the use of cars.
