Breakdown of Czy znasz numer do szefa?
czy
[question particle]
znać
to know (someone or something)
szef
boss (m)
do
to
numer
number
Questions & Answers about Czy znasz numer do szefa?
Why use znasz here instead of a form of wiedzieć?
Znać is used when you "know" a noun—meaning you are acquainted with a person, place, or a specific thing like a phone number. Wiedzieć is used for knowing facts, usually followed by a connecting word like "that," "what," or "where" (for example, "I know what his number is"). Because the object of the sentence is simply the noun numer (number), we use a form of znać.
Since znasz requires the Accusative case, why hasn't the word numer changed its ending?
Numer is in the Accusative case here! It is a masculine inanimate noun (a non-living masculine thing). In Polish, masculine inanimate nouns look exactly the same in the Accusative case as they do in their basic dictionary form (the Nominative case).
Why do we say do szefa ("to the boss") instead of translating "the boss's number"?
When talking about phone numbers, Polish naturally uses the preposition do (to) plus the person you are calling. You are literally asking for "the number to the boss." The preposition do always forces the noun that follows it into the Genitive case, which is why szef changes to szefa.
Do I always have to use czy to ask this kind of question?
No, you can easily drop czy in spoken or casual Polish. You can simply say Znasz numer do szefa? as long as you use a rising, questioning tone of voice at the end of the sentence.
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