Task：The pie charts show changes in U.S. spending patterns between 1966 and 1996.
雅思写作小作文饼状图解析及范文：消费模式变化
思路解析：
1. 主要采用折线模式，重点描述数据的改变和趋势
2. 留意极值（MAX，MIN）的描述
3. 分段的原则可为：上升的一段，下降的一段，保持不变的一段。
参考范文：
The two pie charts above give information about the change of the spending on 6 fundamental aspects of life in U.S from 1966 to 1996.
It is noticeable that the proportion of 3 parts, namely Cars, Restaurants and Computers, increased during the period. Specifically, the expenditure on Cars rose sharply from 23% to 45%, becoming the largest in 1996. Similarly, the percentage of Restaurants also doubled. In addition, Computers, which took up the smallest proportion only at 1% in American budget of 1966, soared up by 10 times to 10% by 1996.
For the rest 3 areas, however, the 3-decade period saw an opposite downward-trend. For example, in terms of Food which played a dominant role in consumption in 1966, there was a slump from 44% to only 14%. This was followed by Patrol and Furniture, in both of which a slight drop was found. In comparison, Books cost least money in 1996, which amounted to merely 1% in total, only one-sixth of relevant spending in 1966.
In conclusion, increased amounts spent on cars, computers, and eating out were made up for by drops in expenditure on food and books.
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