Questions & Answers about Если в комнате жарко, открой окно.
In Russian, a comma is normally used to separate the if-clause from the main clause.
- Если в комнате жарко, открой окно.
- literally: If in the room it is hot, open the window.
So the comma works much like English If it’s hot in the room, open the window.
If the order changes, the comma is still usually needed:
- Открой окно, если в комнате жарко.
В комнате means in the room.
Here, в means in, and because it shows location, комната goes into the prepositional case:
- комната → nominative
- в комнате → prepositional
This is a very common pattern:
- в доме = in the house
- в школе = in the school
- в комнате = in the room