YOU SAID:

he was the coolest cat at the party, he was a frozen feline

INTO JAPANESE

彼はパーティーで一番クールな猫だった、彼は凍った猫だった

BACK INTO ENGLISH

He was the coolest cat at the party, he was a frozen cat

INTO JAPANESE

彼はパーティーで一番クールな猫でした。

BACK INTO ENGLISH

He was the coolest cat at the party.

INTO JAPANESE

彼はパーティーで一番クールな猫だった。

BACK INTO ENGLISH

He was the coolest cat at the party.