大作文写作步骤：1.看标题，找主语（数量，比例）数量：number, amount（money, time）[可数] [不可数]比例：percentage, proportion, share2.看X-Y轴3.找规律-反常①interpret解释（分析数据）②comments评论重要表达方式：1.图表类型graph图标, table表格, bar chart柱状图, pie chart饼状图2.图标指向The graph illustrates…图表说明...The bar chart shows data for…条形图显示的数据...It can be clearly seen from the pie chart that…从饼图可以清楚地看到...3.时间段over the past 5 years 在过去5年over this span of 28 years 在这28年的跨度during the period from March to May 在3月至5月期间throughout the period 整个期间for the rest of the period 在剩余的时间4.动词percentage百分比, number数量（amount）experience huge fall 经历巨大的衰落巨大的：vast, massive, enormous, immense, tremendoussomething unexpected 意外occurred…发生…There be…会有…Japan experienced a massive increase in car ownership in the 1930’s日本在20世纪30年代经历了汽车拥有量的大幅增长5.变化趋势1)增加/上升/提高rise gradually（rose）逐渐上升climb rapidly（climbed）迅速爬升go up significantly（went up）显着上升rise slightly 略有上升The number experienced slight rise.数字略有上升。
experience dramatic increase 经验显着增加People holding a Bachelor’s degree only managed a moderate increase of $5 per week.持有学士学位的人只管理每周适度增加5美元。
2)减少/下降drop slowly（dropped）慢慢下降fall sharply（fell）大幅下降go down by a big amount（went down）大量下跌diminish slightly（diminished）略有减少gradual decline 逐渐下降3)保质平稳/不变remain fairly constant / steady / stable / unchanged保持相当稳定level off 变得稳定change slightly 轻微改变earnings amongst university 在大学中的收入graduates remained fairly steady after 1985.毕业生在1985年以后保持相对稳定。
4)起伏/波动There are minor(small) fluctuations between…and… 在…之间有较小的波动rise and fallfluctuate slightly / dramatically6.比较compared with 和....相比in contrast to 相比之下huge difference 巨大的差异Between 1965 and 1985, there was significant(little) difference in the earnings between high school leavers and university graduates.In 1980, professionals with a Master’s or a Doctoral degree earned slightly more than those with a Bachelor’s degree.The biggest change occurred in the period from 1985 to 1995, when high school leavers enjoyed the greatest increase in earnings.During the same period, professionals with a Doctoral degree enjoyed the same average earnings as those who had done postdoctoral research.在1965年和1985年之间，高中毕业生和大学毕业生的收入之间存在显着（小）的差异。
1980年，获得硕士或博士学位的毕业生的收入略高于那些具有学士学位的毕业生。
最大的变化发生在1985年至1995年期间，当时高中毕业生的收入增长最大。
在同一时期，具有博士学位的专业人士享有与从事博士后研究的人相同的平均收入。
7.数值表达The rate of female smokers remained stable at 320 until 1994.女性吸烟者的比率在1994年之前保持稳定在320。
The spending dropped by two thirds to 14% in 1996.1996年的支出下降了三分之二，达到14％。
8.结论in conclusion 结论是overall 总的来说consequently 因此/所以It can be concluded that…可以得出结论：9.结论分析While people’s earnings increased according their level were far smaller than would be expected.然而人们的收入水平增加远远小于预期。
What’s more interesting, however, is that the increase in earnings amongst high school leavers was far higher than the earnings for university graduates.更有趣的是，高中毕业生的收入增长远远高于大学毕业生。
at+静止数值（at 15%）by+变化数值（by about 15%）费用，花费：cost, spending, expenditure, expense替换词组：①另外：Moreover, Furthermore, What’s more, In addition,②事实上：In effect, Indeed, In fact,③因此：Consequently（As a consequence）, Thus, Therefore,④然而：However,大作文框架：（150~200词）①总体描述It can be clearly seen from the ①that 主题change during the period from 时间1to 时间2.②起点解释一Firstly, we can easily find that 细节描述. 起点解释二What’s more, 细节描述. ③变化规律一In fact, 变化规律. 变化规律二Moreover, 变化规律. ④反常现象一However, what surprises us most is that反常细节. 反常现象二Interestingly, 反常细节.There are several factors that may account for such change.⑤规律原因First of all, an evident reason lies in the fact that 规律原因. ⑥反常原因However, 反常原因.⑦结论Thus, Given the analysis above,it can be concluded that 结论. ⑧建议一Therefore, it is fairly reasonable and wise that 建议. 建议二In addition, another suggestion is that 建议.从①图表类型中可以清楚地看出，主题在时间1到时间2期间发生了变化。
首先，我们很容易发现，细节描述。
此外，细节描述。
实际上，变化规律。
此外，变化规律。
然而，令我们最惊讶的是，反常细节。
有趣的是，反常细节。
有几个原因可以解释这种变化。
首先，一个明显的原因是，规律原因。
然而，反常原因。
因此，根据上述分析，可以得出结论，结论。
因此，建议是相当合理和明智的。
另外，另一个建议是建议。
①table表格/ bar chart柱状图/ line chart曲线图饼状图第一句：It can be clearly seen from the pie chart that 主题massively vary based on the pie chart.从饼状图中可以清楚地看出，主题基于饼图大量地变化。
大学生时间．．分配变化表time using proportions of college students change during the period from 1st year to 3rd year. ②起点解释一In the beginning year of study, college students spent exactly half of their time doing academic works. ③起点解释二And time for union activities ranked 2nd（at 15%）and sports time least. ④变化规律Then the three shares remained fairly constant during the 2nd year. ⑤反常现象However, what surprises us most is that, during the 3rd year, the percentage of time for academic works rose dramatically to 95%, whereas time for the remaining two categories fell(shrunk) sharply to 2% and 3%.期，大学生花费了一半的时间做学术工作。