饼图题一般会以2张或2张以上的图形出现。在写作之前，我们需要观察几张饼图之间的关系是什么;以及每张饼图中有哪几个区域，各个区域分别代表什么，各区域间的百分比差异，相同区域在各个饼图间的百分比的发展等。
饼图中，有几个必用表达，需要大家多多积累：
动词占的表达：account for,hold,make up,take up,consitiute,comprise,represent
百分比的表达：percentage,proportion,share; 某些情况下可以用 rate，如literacy rate
约数表达：the majority of,most of,a considerable number of,a minority of,just over……，slightly more than……/less than……，nearly half……等
分数与百分比的转化：one third,two fifths,one tenth,a quarter,a half
此外，要灵活运用以上的词汇;结合一定的句子，变换表达方式，如：
例：亚洲人口占世界比例近50%
Asia accounts for almost a half of world population
Nearly 50% of people in the world come from Asia
The percentage of Asian in the world population is slightly less than a half
Asia has the largest percentage of population in the world(approximately 50%)
在列举饼图数据时，为了防止单调枯燥，我们也推荐运用排序的方式进行说明：
China takes the lead in world population。
（be leading,the majority,mostly,most）
Next comes foot,whose percentage is higher than that of closthing(follow)
People seem to show no interest in reference books,which lies last in the percentage
(fall behind other items,the lowest proportion)
总之，一定要多积累必用表达，以及灵活变换句式，让考官知道你的强语言功底。
