YOU SAID:

when i was 10 years old, i had a clown at my birthday party

INTO JAPANESE

10歳のとき、誕生日パーティーにピエロがいた

BACK INTO ENGLISH

When I was 10 years old, there was a clown at my birthday party.

INTO JAPANESE

私が10歳のとき、誕生日パーティーにピエロがいました。

BACK INTO ENGLISH

When I was 10 years old, there was a clown at my birthday party.