YOU SAID:
I wasn’t even supposed to be here today.
INTO JAPANESE
今日はここにいるはずじゃなかったのに。
BACK INTO ENGLISH
I wasn't supposed to be here today.
INTO JAPANESE
今日はここにいるはずじゃなかった。
BACK INTO ENGLISH
I wasn't supposed to be here today.
You've done this before, haven't you.