Predicate Adjectives Stay Nominative
In Polish, when an adjective describes a subject using a linking verb like być (to be), it remains in the nominative case. This is a common point of confusion because predicate nouns usually require the instrumental case.
How It Works
While Polish often uses the instrumental case for predicate nouns to define identity, adjectives follow a different rule. In modern Polish, a lone adjective acting as a predicate stays in the nominative to describe a quality, state, or characteristic.
1. The Standard Rule
Whether a state is permanent (like height) or temporary (like being tired), the adjective agrees with the subject in gender and number but stays in the nominative case.
- Jestem głodny. (I am hungry - Masculine Nom.)
- Ona jest inteligentna. (She is intelligent - Feminine Nom.)
2. The Infinitive Exception
When the verb być is used in its infinitive form (to be) or as a participle (being), the adjective often switches to the instrumental case.
- Dobrze jest być miłym. (It is good to be kind.)
- Będąc zmęczonym, poszedłem spać. (Being tired, I went to sleep.)
3. Adjectives with Nouns
If the adjective is part of a noun phrase (Adjective + Noun), the entire phrase usually moves to the instrumental.
- On jest dobrym lekarzem. (He is a good doctor.)
Examples (5)
- Mój brat jest bardzo silny.
My brother is very strong.
Word by Word: My brother is very strong.
The adjective 'silny' (strong) is in the nominative case because it is a lone predicate adjective describing the subject.
- Czy jesteś już gotowa?
Are you ready yet?
Word by Word: Whether (you) are already ready?
Even for temporary states like being 'ready' (gotowa), Polish uses the nominative case.
- To jest bardzo ciekawe.
This is very interesting.
Word by Word: This is very interesting.
In 'to jest' constructions, adjectives always remain in the nominative.
- Niełatwo jest być odważnym.
It is not easy to be brave.
Word by Word: Not-easy is to be brave.
Here, 'odważnym' is in the instrumental because it follows the infinitive 'być'.
- Ona została sławną aktorką.
She became a famous actress.
Word by Word: She became famous actress.
The adjective 'sławną' is instrumental here because it modifies the noun 'aktorką', and predicate nouns after 'zostać' take the instrumental.
Common Mistakes
Using the instrumental for a lone adjective.
On jest wysokim.On jest wysoki.Learners often over-apply the rule for nouns (On jest lekarzem) to adjectives. Lone adjectives should stay nominative.
Using the instrumental after 'To jest'.
To jest dobrym pomysłem.To jest dobry pomysł.The 'To jest' construction always requires the nominative for both nouns and adjectives.
How It Connects
Learn This First
Learn Instrumental Predicate Nouns, Adjective Agreement, Instrumental Case before Predicate Adjectives Stay Nominative.
- Instrumental Predicate Nouns
Learn Instrumental Predicate Nouns first because Predicate Adjectives Stay Nominative uses or contrasts that pattern.
Level 1 - Adjective Agreement
Learn Adjective Agreement first because Predicate Adjectives Stay Nominative uses or contrasts that pattern.
Level 1 - Instrumental Case
Instrumental Case explains the case meaning and function needed for Predicate Adjectives Stay Nominative.
Level 2
Related Patterns
- Nominative Adjective Agreement
Predicate adjectives must still agree with the subject in gender and number, even though they stay in the nominative case.
Level 2 - toIdentity Sentences with to
The 'to' construction is an alternative way to link subjects and predicates, which always uses the nominative.
Level 1 - Instrumental Adjective Agreement
Explains the endings used when an adjective DOES need to be instrumental (e.g., after an infinitive or modifying a noun).
Level 2 - byćThe Verb Być
The primary verb used in these predicate constructions.
Level 1
Practice Predicate Adjectives Stay Nominative in Bubblegum
Poppy, your AI tutor, writes Polish lessons at your level. Tap any grammar point in a lesson to see its full explanation.
