YOU SAID:

I was potty-trained when I was seven.

INTO JAPANESE

私は7歳のときにトイレトレーニングを受けました。

BACK INTO ENGLISH

I received potty training when I was 7 years old.

INTO JAPANESE

私は7歳のときにトイレトレーニングを受けました。

BACK INTO ENGLISH

I received potty training when I was 7 years old.