YOU SAID:
He should have known there would be trouble.
INTO JAPANESE
彼は問題があることを知っていたはずです。
BACK INTO ENGLISH
He should have known that there is a problem.
INTO JAPANESE
彼は問題があることを知っていたはずです。
BACK INTO ENGLISH
He should have known that there is a problem.
You've done this before, haven't you.