chinguga gyeolmareul malhaeseo yeonghwareul bogi jeone ara beoryeosseoyo.

My friend told me the ending, so I ended up finding it out before watching the movie.

Breakdown of chinguga gyeolmareul malhaeseo yeonghwareul bogi jeone ara beoryeosseoyo.

• ~을: object particle
• 친구: friend
• ~를: object particle
• 영화: movie

Questions & Answers about chinguga gyeolmareul malhaeseo yeonghwareul bogi jeone ara beoryeosseoyo.

What is the overall structure of this sentence?

It breaks down like this:

• 친구가 = my friend
  • subject marker
• 결말을 = the ending
  • object marker
• 말해서 = because (someone) said/told it
• 영화를 보기 전에 = before watching the movie
• 알아 버렸어요 = I ended up finding out

So the sentence is basically:

Because my friend told me the ending, I found out before watching the movie.

The subject of 알아 버렸어요 is not stated, but it is understood as I from context.

Why is it 친구가 and not 친구는?

가 marks 친구 as the subject of the first clause: the friend is the one who did the telling.

• 친구가 결말을 말해서 = my friend told the ending / because my friend said the ending

If you used 친구는, it would sound more like setting up as for my friend..., often with contrast or topic emphasis. In this sentence, 가 is the most natural choice because it simply identifies who performed the action.

Why is 결말 marked with 을?