YOU SAID:

ou've done this before, haven't yon

INTO JAPANESE

ou の前にこれをやった、ヨンを持っていません。

BACK INTO ENGLISH

Yong did this in front of the OU does not have.

INTO JAPANESE

容は、OU の前にこれをやったがありません。

BACK INTO ENGLISH

Yong did it in front of the OU.

INTO JAPANESE

容は、OU の前にそれをやった。

BACK INTO ENGLISH

Yong did it in front of the OU.