他儿子今年三岁了。

Tā érzi jīnnián sān suì le.

Her son is three years old this year.

她有三个孩子。

Tā yǒu sān gè háizi.

She has three children.

这里有，一，二，三，四，五。五个苹果。

Zhèlǐ yǒu, yī, èr, sān, sì, wǔ. Wǔ ge píngguǒ.

There are, one, two, three, four five. Five apples.