图表描述专题训练（一）这类作文时，注意以下几点：第一， 审题时，除了要把握好图表的表层信息外， 还要分析图标的深层含义，如原因、根源、可能的发展趋势等。图表中所提供的说明文字往往是问题的切入点，一定要仔细分析。第二， 描述数据时要抓住重点，为中心服务，不必面面俱到，切忌毫无目的地罗列图表中的数据。如果数据较多，抓住图表中的极端点（如最大或最小、最多或最少，最好或最差）和基本相同进行描述。第三， 主题句应明确，最好放在文章的开头，这样会使重点突出，主题明了。图表范例一Students Use of Computers例文： Students Use of Computers提纲： 1. 上图所示为某校大学生平均每周使用计算机的时间： 1990年（2 hours）, 1995年 (4 hours), 2002年 (14 hours)，请描述其变化； 2. 请说明发生这些变化的原因（可从计算机的用途、价格或社会发展等方面加以说明）； 3. 你认为目前大学生在计算机使用中有什么困难或问题。 参考范文(1)Student Use of ComputersAs is clearly shown in the chart, the number of hours students spent on computers increased from two to four hours per week from 1990 to 1995. Especially, the number rose to about 14 hour per week in 2002.There are three factors leading to the change. To begin with, the price of computers is getting much lower than before so that many students can afford it. In addition, it is very convenient for us to study with the help of computers. For example, e-mails enable us to keep in touch with our teachers and friends. Last but not least, with fast development of the modern society, a computer has become a must for many people. To sum up, low price, convenience and wide use contribute to the increase in the use of computers.As for me, student use of computers is a double-edged sword. On the one hand, it is a good helper in searching for information, drawing pictures, etc. One the other hand, various computer games might distract students from their studies. In brief, computers can serve us well if they are used in the right way. 学生使用电脑如图表所示，学生花在电脑上的时间从每周1995小时增加到四小时，从1990小时增加到了12小时。特别是，这个数字在2002上升到每周14小时。导致这一变化的原因有三个。首先，计算机的价格比以前低得多，所以许多学生买得起。此外，在电脑的帮助下学习是非常方便的。例如，电子邮件使我们能够与我们的老师和朋友保持联系。最后但并非最不重要的一点是，随着现代社会的迅速发展，计算机已成为许多人的必用之物。总之，低廉的价格，便利的使用和广泛的使用有助于计算机的使用增加。对我来说，学生使用电脑是把双刃剑。一方面，它是搜索信息、画画等的好帮手；另一方面，各种各样的电脑游戏可能分散学生学习的注意力。简言之，如果计算机被正确使用，计算机就能很好地为我们服务。参考范文（2）Student Use of ComputersAs is clearly shown in the chart, the average number of hours a student spent on computers increased from two to four hours per week from 1990 to 1995. Especially, the number reached approximately 14 hour per week in 2002. Why are there such great changes during these days?There are three factors leading to this phenomenon. Firstly, because of the sharp decline in the price of computers, most college students can afford one. Secondly, the Internet provides access to various kinds of information students are interested in. Finally, playing computer games or surfing online is relaxing. To sum up, low price, easy access to information and wide use make students use computers a lot.As for me, computers do bring convenience to students; however, it is no good fro students to spend too much time chatting online or playing computer games. In brief, in spite of the problems concerning the use of computers, we cant deny that computers are of more merits than defects.学生使用电脑如图表所示，学生花在电脑上的平均时间从每周1995小时增加到四小时，从1990小时增加到了1小时。特别是，在2002，这个数字每周大约达到14小时。为什么这些天有这么大的变化？导致这种现象的原因有三个。首先，由于计算机价格的急剧下降，大多数大学生都能负担得起。第二，因特网提供学生对各种信息的兴趣。最后，玩电脑游戏或上网是放松。总之，低廉的价格，容易获取信息和广泛使用使学生们大量使用计算机。对我来说，电脑确实给学生带来了方便，然而，学生花太多时间上网聊天或玩电脑游戏是没有好处的。简言之，尽管计算机使用方面有问题，但我们不能否认计算机的优点多于缺点。Sample 1Financial Sources of College StudentsFrom the table, we can see clearly that Chinese college students and their American peers rely on different financial sources for their life and study. About 90% of Chinese students get money from their parents. In contrast, only 45% of American students resort to this way. About 40% of American students depend on part-time jobs for income, but only 5% of Chinese students do so. Scholarship is the financial source for 15% of American students, whereas only for 5% of Chinese students.There are several reasons leading to this difference. On the one hand, independence is greatly honored in American society, and students would be proud to depend on themselves. Besides, they have a more flexible schedule so they can have more time to do part-time jobs. On the other hand, some Chinese students take their parents financial support for granted. Similarly, parents believe its their duty to finance their childrens educationI think with the reform in college education, this tendency in China may be changed. The widespread adoption of credit-system will give Chinese students more time and flexibility to pursue part-time jobs and get more independence from their parents. Also, with the passage of time, both the students and the parents ideas will change greatly. Thus, more and more Chinese college students are sure to rely on themselves rather than on their parents for finance.示例1大学生财务来源从表中我们可以清楚地看到，中国大学生和美国同龄人依靠不同的金融来源来学习和生活。大约90%的中国学生从父母那里得到钱。相比之下，只有45%的美国学生采用这种方式。大约40%的美国学生依靠兼职来获得收入，但只有5%的中国学生这样做。奖学金是15%的美国学生的经济来源，而只有5%的中国学生。导致这种差异的原因有好几个。一方面，独立在美国社会中受到极大的尊重，学生们将为依靠自己而自豪。此外，他们有更灵活的时间表，以便他们有更多的时间做兼职工作。另一方面，一些中国学生把父母的经济资助视为理所当然。同样，父母认为他们有责任为孩子的教育提供资金。我认为大学教育的改革，在中国这种趋势可能会改变。普遍采用学分制将使中国学生有更多的时间和灵活性来从事兼职