W domu wkładam kopię i oryginał do dużej koperty.

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Breakdown of W domu wkładam kopię i oryginał do dużej koperty.

• duży: big
• i: and
• w: at

Questions & Answers about W domu wkładam kopię i oryginał do dużej koperty.

Why is it w domu and not w dom?

Because w means in/at here and expresses a location, not movement. After w in this meaning, Polish uses the locative case.

• dom = base form
• w domu = in/at home / in the house

If there were movement into the house, you would normally use a different structure, for example do domu = to the house / into the house.

So:

• w domu = location
• do domu = direction toward home

What case is domu?

It is the locative singular of dom.

The locative is often used after certain prepositions, especially when talking about a place:

• w domu = in the house / at home
• o domu = about the house

In this sentence, w domu tells us where the action happens.

Why is it kopię and not kopia?