YOU SAID:
I'm going to kill him!
INTO JAPANESE
彼を殺してやる!
BACK INTO ENGLISH
He'll kill you!
INTO JAPANESE
彼はあなたを殺すでしょう!
BACK INTO ENGLISH
Will he kill you!
INTO JAPANESE
彼はあなたを殺すでしょう!
BACK INTO ENGLISH
Will he kill you!
That didn't even make that much sense in English.