있었는지를

있었는지를

"Whether there was" or "if there was."

In this sentence, '있었는지를' is used to question the location or state of the book in the past.

그 책이 책장에서 있었는지를 아세요?

Do you know if the book was on the shelf?

Here, the word is part of a conditional statement, hypothesizing about the presence of help in the past.

그 시간에 도움이 있었다면 얼마나 좋았을까요.

How great would it have been if there had been help at that time.

Here, '있었는지를' is used to inquire about the existence of people in a certain place in the past.

그 곳에 사람이 있었는지를 확인해 보세요.

Check if there were people there.