Topic：As countries develop, more and more people buy and use their own cars. Does the advantage of this for individuals outweigh the disadvantage？私家车的利弊

开头段：简单介绍文章背景，私家车的数量大幅增长，因此私家车到底好还是不好引发了很多的争议。

Although modern information technologies can reduce the demand for physical transport by facilitating teleworking and teleservices, the requirement for transport continues to increase. The number of car use on the roads saw an increase of 3 million cars each year from 1990 to 2010, and in the next decade the EU will see a further substantial increase in its feet. （原话稍作修改，用在这里）Therefore, the issue of whether private cars bring us more benefits or drawbacks has been heatedly debated.

主体段第一段: 论述私家车的好处，方便了人们的通勤，让人们不用在依赖固定行程的公共交通。

Granted, the advantages of having private cars are undeniable. Having your own car provide you with a great deal of freedom. Automobiles have redefined the concept of mobility for millions of people. Personal independence derived from having a car means that people can go for shopping, work and pursuit whenever and at anytime without depending on fixed schedules of public transportation systems. Most importantly, it is more efficient for commuters to come and go back between their home and workplaces on a daily basis.

主体段第二段：开始论述私家车的坏处一，产生了大量的二氧化碳，而二氧化碳又是造成温室效应的主要气体，对人们的健康也会有威胁。

However, energy consumption in the transport sector was to blame for a large amount of CO2 emissions, the leading gas of greenhouse effect. This is partly because of the substantial increase of private car ownership. The emission of gas will be capable of causing death in large doses and headaches in smaller doses. According to the latest estimates, if nothing is done to reverse the traffic growth trend, CO2 emission from private automobiles can be expected to increase by around 50% to 1113 billion tones by 2020, compared with the 739 billion tones recorded in 1990.（稍作修改，用做私家车坏处的论据）

主体段第三段：论述私家车的坏处二，会造成水污染。

Furthermore, cars pollute water sources in a variety of ways. One is through runoff of automobile fluids, brake dust, deicing chemicals and oil. Another is through leaking pumps at gas stations. Improper disposal of motor oil is also a cause of ground water contamination.

主体段第四段：论述私家车的坏处三，也会造成城市交通堵塞。

Finally，the determining impact is the large volume of traffic, resulting in traffic congestion, especially during rush hours.（原话稍作修改，用在这里）Currently, more citizens can afford to purchase private cars, which offer them great convenience. Instead of taking unpunctual buses or overcrowded metro to work, people now have the alternative to commute in their own cars. Undeniably, this new trend inevitably deteriorates the traffic situation.（上文用过的论据，这里也可以用）

结尾段：总结上文，所以为了解决这一问题，使用替代燃料以提升能源效率和改革道路政策既是生态的需要，也是技术的挑战。同时为了实现这一模式的转变，人们必须做出更多努力。这样的转变不是一夜之间就可以实现的，毕竟半个多世纪以来公路的状况持续恶化。

Therefore, the over-crowding of city roads is the result of unbalanced urban development. Using alternative fuels to improve energy efficiency and reforming the road policy is thus both an ecological necessarily and a technological challenge. At the same time, greater efforts must be made to achieve a modal shift. Such a change cannot be achieved overnight, all the less so after over half a century of constant deterioration in favor of road.（原句用在这里）