饼状图形的描述
对于百分比进行描述所使用的句型：
…… % the …… is/has/have/are ……
…… accounts for ……% of the total
…… takes up ……% in the whole chart
趋势的比较
1. 表示相似的句型 (实例) ：
Both share prices rose sharply in January.
Neither company has made a profit yet.
Like X, Y fell in June.
X rose just as sharply as Y.
2. 表示差异的句型（实例）：
X fell sharply whereas/while Y remained steady.
X fell quickly compared to Y.
Unlike Y, X rose by 10%.
X rose far more dramatically than Y.
3. 表示倍数的句型：
the …… doubled/tripled in …… compared with those in ……
4. 客观比较的句型：
…… is …… in contrast to ……
