YOU SAID:
Wow I can't believe you've done this
INTO JAPANESE
うわー、あなたがこれをやったとは信じられない
BACK INTO ENGLISH
Wow, I can not believe you did this
INTO JAPANESE
うわー、私はあなたがこれをやったと信じられない
BACK INTO ENGLISH
Wow, I can not believe you did this
Okay, I get it, you like Translation Party.