Breakdown of shusaisha wa mou shuugoubasho ni tsuita you da.
Questions & Answers about shusaisha wa mou shuugoubasho ni tsuita you da.
は marks 主催者 as the topic of the sentence.
So the sentence is talking about the organizer, and then saying something about them: that they apparently have already arrived at the meeting place.
A rough breakdown is:
- 主催者は = as for the organizer / the organizer
- rest of sentence = apparently has already arrived at the meeting place
If you changed は to が, the nuance would shift a bit. が would sound more like identifying the organizer specifically as the one who seems to have arrived.
もう here means already.
So it adds the idea that the arrival has happened sooner than expected, or that by now the organizer has arrived.
Examples of the nuance:
- もう着いた = already arrived
- まだ着いていない = has not arrived yet
In this sentence, もう naturally goes with 着いた to mean has already arrived.
