만 해도

As recently as

• 10년 전만 해도, 우리 나라가 이렇게 양극화되지는 않았다.

  Even just 10 years ago, our country was not this polarized.
• 어제까지만 해도 나는 그 사람이 사건에 관여했을 거라고는 생각도 못했어.

  Just yesterday, I hadn't even once thought that he could have been involved in this case.
• 도서관에 들어올 때까지만 해도 공부할 의욕이 차고 넘쳐났는데 교과서 펴고 보니까 집중이 안 되더라고요.

  Right up until I entered the library, I was full of motivation to study, but once I opened the textbook, I couldn't focus at all.
• 그때만 해도 한국어를 잘 못했었어.

  I couldn't speak Korean back then. (As recently as that point, I couldn't speak Korean)
• 누구도 그를 한 달 전까지만 해도 노숙자라고 상상하지 못했을 것이다.

  No one would have been able to imagine that he had been homeless as recently as a month ago.