-(으)ㄹ진대

이미 시작했을진대 끝까지 해야지요.

Since you've already started, you should see it through to the end.

최선을 다했을진대 후회는 없습니다.

Given that I did my best, I have no regrets.

약속을 했을진대 지켜야 합니다.

Given that a promise was made, it must be kept.

학생일진대 공부에 힘써야지요.

Since you are a student, you should devote yourself to studying.

부모일진대 자식 걱정을 안 할 수 없지요.

Being a parent, one cannot help but worry about their children.