流程题、地图题要多点用被动语态；图表题（包括bar chart、line graph、pie chart、table）大多用主动，但是也可以用一些被动。

举个例子。假设某个pie chart里说“一个家庭的收入中的70%用在购买食物上，30%用在教育上。”那么，你既可以用主动，也可以用被动。你可以说：（1）主动语态： A family spends 70% of its income on foods and the rest on education.(2) 被动语态：70% of the family income is spent on foods, while the remaining earning is invested in education.