My father's friend was so drunk, he was half passed out.
My father's friend was quite intoxicated and barely conscious.
ーMy father's friend was so drunk, he was half passed out.
「父の友人が酔いつぶれていた」
to be drunk で「酒に酔う」
to be half passed out で「半分意識を失う」
ーMy father's friend was quite intoxicated and barely conscious.
「父の友人が酔いつぶれていた」
to be intoxicated で「酒に酔っている」
barely conscious で「かろうじて・わずかに意識がある」
ご参考まで！
カナダ 
