"전 이렇게 될 거라고 생각하지 못했어요" = 저는 (그것이/제가/...) 이렇게 될 것이라고 생각하지 못했어요.
=> I had no idea it would turn out this way. (If "it" is the subject)
=> I had no idea I would end up this way. (If "I" is the subject)
- (그것이) 이렇게 될 것이다: It(그것이) will(것이다) turn out(될) this way(이렇게).
- 이렇게 될 것이라고: 이렇게 될 것이다 + 라고(quoting particle - "that...") => That it will turn out this way.
- 이렇게 될 것이라고 생각했어요: I thought it would turn out this way.
- 생각하지 못했어요: I had no idea that ... It didn't occur to me that ...
- 이렇게 될 것이라고 생각하지 못했어요: I had no idea it would turn out this way.