Water is very important for us. We must drink water everyday. We can't live without water.
水对我们很重要。我们必须每天喝水。没有水我们就不能生存。

Water is everywhere around us. At home, we use water to wash clothes, wash dishes, cook rice, clean the flat, have showers, clean our teeth and so on. At work, people use water to put out fires, grow vegetables, make things in factories and so on. Water is important for us, isn't it?
我们周围到处都有水。在家里,我们用水来洗衣服,刷盘子,煮米饭,擦地板,冲凉,刷牙等等。工作的时候,人们用水来灭火,种菜,在工厂里制造东西等等。水对我们很重要,不是吗?

There isn't much water on the earth. It is not inexhaustible. It is very valuable. We must save it.
地球上的水并不是很多。塔并不是用之不竭的。它很宝贵。我们必须节约用水。

小作者通过写水的用途来说明水的重要性,号召大家要节约用水。