回答
2022-12-04 00:06:25
未設定
This is not a piece of advice to you I'm talking to myself for my practice of writing skills.
There were no chairs (to sit on) in the room. = no chairs to sit on were in the room.
I suppose 'sit on' might be phrasaral verb and 'in the room' is prepositional phrase.
:sit on: Collins dictionary.
https://www.collinsdictionary.com/dictionary/english/sit-on
:sit on: weblio dictionary.
https://ejje.weblio.jp/content/sit+on