Questions & Answers about W grudniu kupujemy prezenty i pieczemy ciastka z cynamonem.
Because after the preposition w meaning in, Polish uses the locative case for months.
The basic form is grudzień = December.
After w, it changes to grudniu:
- grudzień → w grudniu
So w grudniu means in December.
This is very common with months:
- w styczniu = in January
- w lutym = in February
- w maju = in May
So the learner should think: w + month = locative form.
Here w means in.
So:
- w grudniu = in December
Be careful, because w can also mean inside / at / in, depending on context. But with months, it is usually just in.