在考研英语二中描述图表时，可以遵循以下步骤和结构：

整体描述 ：

首先，简要说明图表展示的内容，可以用一句话概括图表的主题。例如：“The chart illustrates the changes in the market share of various products over a period of time.”

具体数据描述 ：

详细描述图表中的具体数据，包括变化趋势、占比等。可以使用一些过渡词如“specifically”、“particularly”等来引出具体数据。例如：“As we can see from the chart, there has been a significant increase in the market share of Product A from 2018 to 2022, rising from 30% to 45%. In contrast, the market share of Product B has decreased slightly during the same period.”

图表类型 ：

根据图表的类型，使用相应的词汇进行描述。例如，柱状图可以用“bar chart”，折线图可以用“line graph”，饼图可以用“pie chart”或“pie table”等。

趋势分析 ：

分析图表中的趋势，是上升、下降还是波动。例如：“The data reveals an upward trend in the sales of electric vehicles, with a 20% increase in the past five years.”

总结 ：

在描述完图表后，可以总结图表所反映的主要信息或趋势。例如：“Overall, the chart highlights the importance of sustainable products in the market, as their market share continues to grow.”

第一段 ：

When it comes to the market share of various products, the chart provides some interesting data regarding the changes over the past few years.

第二段 ：

As we can see from the chart, there has been a significant increase in the market share of electric vehicles, with a 20% increase in the past five years. In contrast, the market share of traditional gasoline cars has decreased slightly during the same period. This shift is likely due to the increasing awareness of environmental issues and the push for cleaner energy solutions.

第三段 ：

Overall, the chart illustrates the growing importance of sustainable products in the market, as their market share continues to grow. This trend is expected to continue as more consumers seek eco-friendly alternatives.

通过以上步骤和结构，可以有效地描述考研英语二中的图表，使文章更具说服力和深度。