文档介绍：特点
静态数据（百分比或数字）
除了最大最小的，还有互相成倍的,一样的
饼状图 Pie Chart
写作步骤
先审题，在看图
几张饼，几种馅
哪个馅儿多，哪个馅儿少
数字，比率
整体+局部
The following was divided among leisure, books and others.
Leisure spending constituted a larger percentage (around 20%) of student expenditure in both country A and country B, while in country C more money was spent on books (21%) than on leisure (12%).
比较较小/最小
P5
Overall, as wealth decreased, the percentage of students' spending on non-essential went down.
总结一个趋势
时间变化
The pie charts below show units of electricity production by fuel source in Australia and France in 1980 and 2000.
Summarize the information by selecting and reporting the main features, and make comparisons where
P1
The charts compare the sources of electricity in Australia and France in the years 1980 and 2000.
Between these years electricity production almost doubled, rising from 100 units to 170 in Australia, and from 90 to 180 units in France.
三倍triple 四倍quadruple n/adj/v
fourfold adj/adv
P2
In 1980 Australia used coal as the main electricity source (50 units) and the remainder was produced from natural gas, hydro power (each producing 20 units) and oil (which produced only 10 units).
By 2000, coal had become the fuel for more than 75% of electricity produced and only hydro continued to be another significant source supplying approximately 20%.
P3
In contrast, France used coal as a source for only 25 units of electricity in 1980, which was matched by natural gas.
The remaining 40 units were produced largely from oil and nuclear power, with hydro contributing only 5 units.
But by 2000 nuclear power, which was not used at all in Australia, had developed into the main source, producing almost 75% of electricity, at 126 units, while coal and oil together produced only 50 units. Other sources were no longer significant.
P4
Overall, it is clear that by 2000 these two countries relied on different principal fuel sources: Australia relied on coal and France o