Question Words

1. Common Question Words:

• Kto? (Who?)
• Co? (What?)
• Gdzie? (Where?)
• Kiedy? (When?)
• Dlaczego? (Why?)
• Jak? (How?)
• Jaki? (What kind of?)
• Który? (Which?)
• Ile? (How much/many?)
• Czyj? (Whose?)

2. Word Order and Pronouns:
The question word is typically the first word. Unlike English, which uses auxiliary verbs for inversion, the standard, neutral word order in Polish is to place the verb immediately after the question word and before the subject (e.g., Co robi Piotr? - What is Piotr doing?). However, Polish has a flexible word order, so this is not a rigid requirement. Additionally, Polish frequently leaves out subject pronouns, so you will often just hear the question word and the verb (e.g., Gdzie idziesz? instead of Gdzie ty idziesz?). When speaking, your voice should fall at the end of the sentence, unlike yes/no questions which go up in pitch.

3. Prepositions Go First:
In English, we often leave prepositions at the end of a sentence ("Who are you going with?"). In Polish, this is strictly forbidden. The preposition must attach directly to the front of the question word. Crucially, the preposition dictates the case of the question word. For example, the preposition z (with) requires the Instrumental case, which is why kto (who) changes to kim in Z kim idziesz? (With whom are you going?).

4. Changing Forms (Cases):
The fundamental rule is that kto is used for people, while co is used for things and concepts. Note that kto and co always take a third-person singular verb in the present tense, even if the expected answer is plural or involves 'you' or 'me' (e.g., Kto tam idzie? - Who is going there?). In the past tense, kto always takes a masculine singular verb (e.g., Kto to zrobił? - Who did it?), and co takes a neuter singular verb (e.g., Co się stało? - What happened?). Words like kto and co change their endings depending on their role in the sentence. Just like prepositions, verbs also dictate the case of the question word. For example, the verb szukać (to look for) requires the Genitive case (Czego szukasz? - What are you looking for?), while widzieć (to see) requires the Accusative case (Kogo widzisz? - Who do you see?). Question words like jaki, który, and czyj decline just like adjectives, changing to match the gender, number, and case of the noun they describe. On the other hand, question words that are adverbs, such as gdzie, kiedy, dlaczego, and jak, are indeclinable and never change their form. Finally, the word ile (how much/many) has unique behavior: it forces the following noun into the Genitive case (e.g., Ile lat? - How many years?). It also has a special form, ilu, used specifically for masculine-personal groups.