YOU SAID:
My dad left me when I was 3
INTO JAPANESE
私が3歳のとき私の父は私を残しました
BACK INTO ENGLISH
My father left me when I was three years old
INTO JAPANESE
私が3歳の時に私の父は私を残しました
BACK INTO ENGLISH
My father left me when I was 3 years old
INTO JAPANESE
私が3歳の時に父が私を残しました
BACK INTO ENGLISH
My father left me when I was three years old
INTO JAPANESE
私が3歳の時に私の父は私を残しました
BACK INTO ENGLISH
My father left me when I was 3 years old
INTO JAPANESE
私が3歳の時に父が私を残しました
it is unlikely that this phrase will ever reach equilibrium