YOU SAID:
You know you are getting old when you forget your age.
INTO JAPANESE
自分の年齢を忘れると、年をとっていることがわかります。
BACK INTO ENGLISH
When you forget your age, you find yourself getting older.
INTO JAPANESE
自分の年齢を忘れると、自分が年をとっていることに気づきます。
BACK INTO ENGLISH
When you forget your age, you find yourself getting older.
You've done this before, haven't you.