[数据图：双线组合]

主要描述【变化】，必要时需进行【对比】

时间【上下两图时间一致，且全在过去】

Depicted in the line graphs are the changing percentages of electrical appliances owned in one country and the weekly time allotted to deal with housework, including washing clothes, preparing meals and cleaning. The period of 1920 to 2019 is investigated.

【Para 1:简述两图内容。倒装句的使用，关注be动词选取】

Most notably, as for the ownership of the refrigerator, there had been a drastic growth since its advent. To specify, having a refrigerator had become commonplace by 1980, as all households owned it and the figure continued to stabilize afterwards. Similarly, the given period also witnessed a dramatic rise of 70% in the proportion of households owning the vacuum cleaner, although its popularity fell behind that of the refrigerator before 2000. By stark contrast, a marginal growth was observed in the figure for the washing machine, whose proportion increased by roughly 35%.

【Para 2: 三线图-多线图先分组。三条线整体均呈现上升趋势，按照‘变化幅度’进行细化比较——refrigerator, vacuum cleaner (增幅显著);washing machine (增幅小) 。特别关注，描述图中对应的0%和100%数值的表达。】

语言点小结：句子主语的变化

When it comes to the weekly hours spent on doing housework, starting from 50 hours per week in 1920, the time dropped steeply to roughly 15 hours in 2000, after which it bottomed out at 10 hours in 2019.

【Para 3: 单线图，细化各时段变化趋势的比较】

语言点小结：状语成分(动词分词形式)，从句使用

Overall, with the prevalence of electrical appliances, doing the household chores became less time-consuming accordingly.