My younger sister will turn 20 years old this year.

I will turn 20 years old this year.

In Japan, compulsory education lasts for 9 years, from age 6 to 15.

How old are you?

How old are you?

My daughter is three years old.

I will turn twenty years old next year.

He goes jogging every day throughout the year.

I will turn twenty years old next year.

The three friends of winter are planted in his garden.