对于语言基础并不扎实的小白鸭同学来说，掌握关于占比的不同表达是写饼图的重中之重，因为在评分标准中lexical resource要求我们的用词和句法要有多样性，因此很多同学会从天南海北搜罗“史上最全/最强/最高级饼图表达”，then, 早鸟同学会紧锣密鼓的开始背诵，懒癌晚期的同学会任它们在收藏夹中自生自灭。
但实际上，脑子输入越多，在正式写文章的时候越容易混乱，会纠结到底选择哪个表达最合适呢，严重些还可能会用错。因此，在积累句式表达的时候，一定要遵循一个原则：less is more每一类的表达积累2-3个即可。
词汇：
动词“占”的表达：account for, hold,make up, take up, constitute， comprise, represent
百分比的表达：percentage, proportion, share等
分数的表达：one third, two fifths, one tenth, a quarter, a half等
句式：
看下图，写出至少3种句式描述不同商品的销量占比～
参考答案
句型一:The majority of sales in Bob's store come from DVDs with exactly60%.
句型二:DVDs account for three fifths of the total sales.
句型三:The percentage of PC games sold is exactly 20%.
句型四:Fifteen percent of items sold in the store are CDs.
句型五:There is merely 5% of the total revenue generated by sellingposters.
句型六:For the sales of poster sonly 5% contributes to the turnover.
如上所述，每一种句式都可以相互替换，在平时的练习中，我们就需要有这种变换句式的意识，做到可以自由切换毫不费力~
雅思task 1饼图之分析图表
掌握好常用的句式词汇表达后，我们要进阶到图表分析阶段啦，饼图可以分成两种类型考虑：
1、有时间推移的多个饼图，通常一个饼图显示一个时间点不同元素的占比
The three pie charts below show the changes in annual spending by aparticular UK school in 1981, 1991 and 2001.
Summarise the information by selecting and reporting the main features, andmake comparisons where relevant.
? 思路分析：
对于这一类饼图，其实也可以转换为折线图，按照时间的先后顺序来描述，具体可参考这篇文章。
? introduction：对题干内容进行改写
annualspending->改为从句how much a UK school spent on different running costs
in 1981, 1991 and 2001->three separateyears
? overview:找图中最明显的2-3个特征
教师的工资是学校最大的成本。
虽然设备和保险方面的支出大幅增加，但书籍等方面的支出和其他工作人员的工资却相应减少。
? bodyparagraph:
1、按数据从大到小进行描述，先描述工作人员（包含teachers and other workers）
2、描述其它较小数据的年份变化，书籍等资源先上升后下降；相比之下，家具和设备的费用出现了相反的趋势，给出数据。同样，保险费用也出现了增长趋势，给出数据。
? 范文参考：
思路分析之后，让我们一起看下范文是如何将这些数据组织成有逻辑的文章吧！
Thecharts show how much a UK school spent on different running costs in threeseparate years: 1981, 1991 and 2001.
In all three years, the greatest expenditure was on staff salaries. But while other workers’salaries saw a fall from 28% in 1981 to only 15% of spending in 2001, teachers’pay remained the biggest cost, reaching 50% of total spending in 1991 andending at 45% in 2001.
Expenditure on resources such asbooks had increased to 20% by 1991 before decreasing to only 9% by the end ofthe period. In contrast（使用对比体现逻辑）, the cost of furniture and equipment saw an opposite trend（相反趋势）. This cost decreased to only 5% of total expenditure in 1991 butrose dramatically in 2001 when it represented 23% of the school budget. Similarly,the cost of insurance saw a rising trend, growing from only 2% to 8% by2001.
Overall, teachers’ salariesconstituted the largest cost to the school, and while spending increaseddramatically for equipment and insurance, there were corresponding dropsin expenditure on things such as books and on other workers’ salaries.（overview部分也可以放到段落末尾做总结）
2、无时间推移的多个饼图
The chartsbelow show the average percentages in typical meals of three types ofnutrients, all of which may be unhealthy if eaten too much.
? 思路分析：
一个主体段中，按照不同元素占比从大到小进行描述(可挑相似特征的元素分到一 段)
? introduction：对题干内容进行改写
average percentages of …->howmuch sodium, saturated fat and added sugars were consumed in the average meal
? overview：找图中最明显的2-3个特征
大部分的钠和脂肪是在晚餐时摄入的
大部分的糖是在零食中吃的
午餐也倾向于咸味和大量脂肪，而早餐在所有三种营养素中的百分比最低。
? body paragraph:
1、晚餐午餐归到一段中：晚餐和午餐的钠和饱和脂肪的比例大致相似，都很大。晚餐和午餐的糖量要低得多。
2、再描述早餐和零食：早餐和零食的百分比也是相当的，都是由14%的钠组成。对于饱和脂肪，零食比早餐略高。在糖方面差距最大。
? 范文参考：
思路分析之后，让我们一起看下范文是如何将这些数据组织成有逻辑的文章吧！
The graph shows how much（改为从句） sodium,saturated fat and added sugars were consumed in the average meal in the United States（缩写改为全拼）.
Looking from an overall perspective, it is readily apparent that the majority of sodium and fatwere consumed at dinner, while（对比逻辑） most sugar was eaten in snacks. Lunch also tended to be salty and have a lot of fat while（对比逻辑）breakfast had the lowest percentages for all three nutrients.
Dinner and lunch had roughly similar, large proportions for both sodium (43% for dinner and 29% forlunch) and saturated fat (37% for dinner and 26% for lunch). The amount ofsugar in an average meal for dinner and lunch was much lower at 23% and 19%,respectively.
Turning to breakfast and snacks（体现出段落的分类逻辑）,which also had comparable percentages, they were both made up of 14% sodium. For saturated fats, snacks contained 21% and breakfast wasslightly lower at 16%. In terms of sugar, there was the greatestdisparity with 42% of snacks being sugary and just 16% of breakfasts being madeup of sugar.
在进行数据描述的时候，尽量可以多一些用词的变化，参考刚才的分析，我们可以尝试用倍数、分数、数值相同等方式替代具体的数值。
