YOU SAID:
i have nine years old
INTO JAPANESE
私は9歳です
BACK INTO ENGLISH
i am 9 years old
INTO JAPANESE
9歳です
BACK INTO ENGLISH
I'm 9 years old
INTO JAPANESE
私は9歳です
BACK INTO ENGLISH
i am 9 years old
INTO JAPANESE
9歳です
BACK INTO ENGLISH
I'm 9 years old
it is unlikely that this phrase will ever reach equilibrium