十九

shí jiā jiǔ shì shí jiǔ

十加九是十九。

10 plus 9 makes 19.

tā shí jiǔ suì le

她十九岁了。

She is nineteen.

tā shí jiǔ suì le míng nián tā jiāng qìng zhù èr shí suì shēng rì

她十九岁了，明年她将庆祝二十岁生日。

She is nineteen, and next year she is going to celebrate her twentieth birthday.

dì shí jiǔ

第十九

the nineteenth