YOU SAID:

I have never been this angry with you fellow mates

INTO JAPANESE

決してこの仲間の仲間に腹をたてています。

BACK INTO ENGLISH

Never are angry with this fellow peers.

INTO JAPANESE

決して、この仲間の仲間に怒っています。

BACK INTO ENGLISH

Never angry of this fellow.

INTO JAPANESE

こいつのこと怒っています。

BACK INTO ENGLISH

That guy is angry.

INTO JAPANESE

その男は怒っています。

BACK INTO ENGLISH

The man is angry.

INTO JAPANESE

男は怒っています。

BACK INTO ENGLISH

The man is angry.