do + Genitive

For most destinations that are enclosed spaces or specific people, you will use do, which always takes the genitive case. While do is the default for buildings, keep in mind there are common exceptions that take na (like na basen or na siłownię).

1. Movement to Places:
It is the default for most buildings, cities, and countries. Unlike English, which uses 'to' for direction and 'into' for entry, do handles both.

• Idę do sklepu — I am going to (or into) the shop.
• Jadę do Krakowa — I am going to Krakow.

Important Nuances: While do is the standard for countries, note that the Council for the Polish Language (RJP) strongly recommended in 2022 using do Ukrainy (to Ukraine) out of empathy and respect for how it is perceived, noting that the traditional na is a historical relic rather than a sign of questioning sovereignty. For countries such as Belarus, Lithuania, Latvia, Slovakia, and Hungary, using do (do Białorusi, do Litwy, do Łotwy, do Słowacji, do Węgier) is now acceptable, but the traditional na + accusative (na Białoruś, na Litwę, na Łotwę, na Słowację, na Węgry) remains correct and widely used. Meanwhile, specific functional buildings still require na, such as the post office (na pocztę), the train station (na dworzec), the airport (na lotnisko), and the university (na uniwersytet).

Note on Islands: While many islands use na, large island nations or states typically use do (e.g., do Japonii, do Irlandii, do Wielkiej Brytanii), with conventional combinations using na, such as Cuba, Cyprus, or the Philippines (na Kubę, na Cypr, na Filipiny).

2. Movement to People:
When going to see someone (like a doctor or a relative), use do.

• Idę do lekarza — I am going to the doctor.

3. Communication Verbs:
In Polish, you direct your communication 'to' someone using do. This is crucial for verbs like calling, speaking, or writing.

• Dzwonię do mamy — I am calling my mom.
• Mówię do ciebie — I am speaking to you.
• Piszę do brata — I am writing to my brother.

4. Purpose, Function, and Addition:
Use do to describe what an object is 'for' or when adding something to a mixture. It is often used to create everyday compound nouns.

• Klucze do domu — Keys for the house.
• Szczoteczka do zębów — Toothbrush (literally: brush for teeth).
• Dodać mleko do herbaty — To add milk to tea.

5. Readiness and Entitlement:
Do is used to express being ready for something or having a right to it.

• Gotowy do pracy — Ready for work.
• Prawo do urlopu — Right to a vacation.

6. Belonging and Comparison:
Do is also commonly used to express belonging or similarity.

• Należeć do klubu — To belong to a club.
• Podobny do ojca — Similar to (one's) father.

7. Time, Quantity, and Distance:
It can mean 'until', 'up to', or indicate distance.

• Do widzenia — Goodbye (literally: until seeing).
• Od rana do wieczora — From morning until evening.
• Mamy 10 kilometrów do Warszawy — We have 10 kilometers to Warsaw.

8. Case Endings:
Remember that the noun must change to the genitive:

• Masculine: usually -u or -a (do domu, do szpitala).
• Feminine: usually -y or -i (do szkoły, do Gdyni).
• Neuter: usually -a (do kina).