introduction万能介绍段
This table shows the changing proportion of A and B from … to …该表格描述了…年到…年之间A与B的比例关系。
This graph,presented in the chart,shows the general trend in…该图呈现了…总的趋势。
As can be seen from the graph, the two graphs show the flutuation of…如图所示，两条曲线描述了…的波动情况。
高分表达：
From the table/chart/diagram/figure,we can see clearly that…从图表中我们可以很清楚的看到…
The chart shows the changes in the number of …over the period from…to…该表格描述了在…年到…年之间…数量的变化。