英语图表作文的写作步骤如下：

审题

清晰地理解题目要求，读懂图表内容和所陈述的含义，抓住要点，注意文体是什么。

描述图表

开篇句：使用“As the chart shows,”或“From the chart/graph/diagram/figure, we can see clearly that...”等句式开头，简要描述图表的内容。

扩展句：可以添加一些细节描述，例如时间的变化、数据的变化趋势等。

解释图表变化原因

主题句：明确阐述图表中数据变化的原因或趋势。

支持句：提供具体的例子或数据支持你的观点，解释为什么会出现这样的变化。

总结或提出结论

根据图表的内容和分析，得出一个明确的结论或看法。

As is shown in the bar chart, the sales of electric vehicles （EVs） have increased significantly from 2018 to 2022.

From the chart, we can see clearly that the number of EVs sold has gone up from 100,000 in 2018 to 250,000 in 2022, indicating a strong market growth trend.

Several factors contribute to this increase. Firstly, the government has introduced various incentives and subsidies to promote the adoption of EVs. Secondly, the technology of EVs has improved rapidly, making them more competitive with traditional gasoline-powered cars. Lastly, environmental concerns have also driven consumers towards EVs.

In conclusion, the sales of electric vehicles have shown a remarkable increase over the past few years, and it is expected that this trend will continue as the market matures and more consumers become aware of the benefits of EVs.

希望这个示例能帮助你更好地理解如何写英语图表作文。