YOU SAID:
I checked to make sure that he was still alive.
INTO JAPANESE
私は彼がまだ生きているのかを確かめた。
BACK INTO ENGLISH
I ascertained that he was still alive.
INTO JAPANESE
私は彼がまだ生きているのかを確かめた。
BACK INTO ENGLISH
I ascertained that he was still alive.
That didn't even make that much sense in English.