Breakdown of geu seojeomeun joyonghaeseo manhwa malgo soseoldo cheoncheonhi goreugi johayo.
Questions & Answers about geu seojeomeun joyonghaeseo manhwa malgo soseoldo cheoncheonhi goreugi johayo.
-아서/어서/해서 connects two parts of a sentence and often gives a reason or background: because / so.
- 조용하다 = to be quiet
- 조용해서 = because it is quiet / it is quiet, so...
In this sentence, 조용해서 explains why the next part is true: because the bookstore is quiet, it is good to choose books slowly there.
은/는 marks the topic. Here, 그 서점은 means something like as for that bookstore...
Using 은 gives a topic-comment structure:
- 그 서점은 = as for that bookstore,
- 조용해서 ... 좋아요 = it is quiet, so ... is nice/good
A learner can think of this as setting the scene and then saying something about it.
If you used 그 서점이, it would sound more like you are specifically identifying that bookstore as the subject in contrast to something else.