YOU SAID:
For sooth, I came to late! He is dead already.
INTO JAPANESE
遅刻しちゃった!彼はもう死んでいます。
BACK INTO ENGLISH
I'm late! he is already dead
INTO JAPANESE
遅刻だ!彼はもう死んでいる
BACK INTO ENGLISH
I'm late! he is already dead
That didn't even make that much sense in English.