YOU SAID:
I actually haven't done this before.
INTO JAPANESE
実際にこれをやったことはありません。
BACK INTO ENGLISH
I have never actually done this.
INTO JAPANESE
したことはない
BACK INTO ENGLISH
I have never done this
INTO JAPANESE
したことはない
BACK INTO ENGLISH
I have never done this
That didn't even make that much sense in English.