Breakdown of fuku wa datsuijo ni aru.
Questions & Answers about fuku wa datsuijo ni aru.
は marks 服 as the topic of the sentence.
So the sentence is not just saying that clothes exist somewhere. It is more like:
- As for the clothes, they are in the changing room
- The clothes are in the changing room
In Japanese, は often sets up what you are talking about, and then the rest of the sentence says something about that topic.
Both are possible in some contexts, but they feel different.
服は脱衣所にある。
As for the clothes, they are in the changing room.
This sounds like the clothes are already known in the conversation, or you are contrasting them with something else.服が脱衣所にある。
There are clothes in the changing room. / The clothes are in the changing room.
This puts more focus on 服 itself, as new or important information.
A simple way to think about it:
- は = topic / “as for...”
- が = subject in a more focused or identifying way
