Moja teczka leży pod biurkiem, bo jest za ciężka na półkę.

My briefcase is lying under the desk, because it is too heavy for the shelf.

Breakdown of Moja teczka leży pod biurkiem, bo jest za ciężka na półkę.

• być: to be
• mój: my
• bo: because
• na: for

Questions & Answers about Moja teczka leży pod biurkiem, bo jest za ciężka na półkę.

Why is it moja teczka and not mój teczka?

Because teczka is a feminine noun in Polish, and the possessive adjective my has to agree with the noun’s gender.

So:

• mój = masculine
• moja = feminine
• moje = neuter

Since teczka is feminine, you say moja teczka.

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What exactly does teczka mean?

Teczka usually means something like:

• briefcase
• folder
• document case

The exact translation depends on context. In this sentence, it is some kind of bag or case that can be placed under a desk or on a shelf.

It is a feminine noun, which is important because other words in the sentence agree with it.

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Why does the sentence use leży instead of just jest?