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图表作文 图表是科学文献中常用的一种表达手段。四六级图表作文利用图形（figure）、表格（table）、曲线图（line graph）、柱状图（pie chart）和饼状图（pie chart）等作为写作提示，并以此为依据要求用简洁生动的语言把图标中所给出的信息完整而准确地表达出来。 这一类作文通常前半部分说明图标所表达的信息，后半部分进行议论，不论以何种方式出现，图标作文还是遵循一定的模式。最常见的模式是：第一段：描述现状。简要地描述图表，概括图表所表现的社会问题。 第二段：分析原因。剖析图表所反映的深层次问题。用图表来论证第一段提出的主题， 或者分析各个数据产生的原因。第三段：结论和启示。从图表中所体现的现象获得结论或者启示，或者对图标所表现的趋势加以预测。 例1 Changes in Peoples Diet: food\Year 1986 1987 1988 1989 1990 Grain 49% 47% 46.5% 45% 45% Milk 10% 11% 11% 12% 13% Meat 17% 20% 22.5% 23% 21% Fruit and vegetable 24% 22% 20% 20% 21% Total 100% 100% 100% 100% 100% Changes in People’s Diet Diet is very important in people’s life . From 1987 to 1990. people’s diet changed a lot . Grain was no longer regarded as the main food. And as the proportion of fruit and vegetables declined, the consumption of milk and meat increased.　　 What caused these changes? There are two reasons. One is that with the development of science, people began to realize the importance of maintaining a balanced diet. The other is that people had more money to spend and could afford more expensive food. They tried to change their low-priced diet into a more varied one. They were eager to build up a strong body by improving their living standards.　　 With the development of our economy and the improvement of our food supply, further changes will take place in people’s diet. 例2　　Directions: Write a composition based on the charts of the average family expenses in the United Stated. The opening sentence is given and you are required to develop it into a full composition.The opening sentence: The average family income in the United States increased from 12,000 dollars per year in 1980 to 16,000 dollars in 1985. The Average Family Expenses The average family income in the United States has increased from 12,000 dollars per year in 1980 to 16,000 dollars in 1985. In the meantime, the structure of the average family expenses has changed, too. These graphs show the change clearly.　　 The biggest part of th