Breakdown of Ночью форточка была закрыта, но в комнате всё равно было прохладно.
Questions & Answers about Ночью форточка была закрыта, но в комнате всё равно было прохладно.
Ночью is the instrumental case of ночь.
In Russian, some time expressions use the instrumental without a preposition to mean during a certain part of the day or time period. So:
- утром = in the morning
- днём = during the day / in the daytime
- вечером = in the evening
- ночью = at night / during the night
So Ночью форточка была закрыта means At night, the vent window was closed.
This is a very common pattern, and it is best to learn these as fixed time expressions.
Форточка is a very specific kind of window: a small opening window, often a little top or side section of a larger window used for ventilation.
It is not just any window. A full window is окно, but форточка is the little part you open to let air in.
For many English speakers, there is no perfect everyday one-word translation, so you may see it translated as:
- vent window
- small window pane
- little window flap
- sometimes just window if the context is clear