Breakdown of Предатель оказался известным актёром.
известный
famous
актёр
actor
оказаться
to turn out to be (perfective)
предатель
traitor
Questions & Answers about Предатель оказался известным актёром.
Why is известным актёром in the Instrumental case?
It follows the verb оказался (turned out). In Russian, verbs that describe taking on a role, being revealed as something, or remaining in a specific state strongly require the Instrumental case for the noun or adjective that follows them.
Could I use the Nominative case here instead, like Предатель оказался известный актёр?
No, that would sound very unnatural. While the present tense of the verb 'to be' connects two Nominative nouns, verbs like оказаться (to turn out), оставаться (to remain), and притворяться (to pretend) act as a bridge to a specific role or manifestation, which strictly demands the Instrumental case.
Is оказался perfective or imperfective?
It is perfective, coming from the infinitive оказаться. The imperfective form is оказываться. The perfective aspect is used here because discovering the traitor's identity is a single, completed realization, rather than an ongoing, repeated process.
Does оказаться always mean 'to turn out to be'?
Not always. When paired with the Instrumental case, it means 'to turn out to be' a certain thing or person. However, if you pair it with a preposition of location (like в or на + Prepositional case), it means 'to end up' or 'to find oneself'. For example, Он оказался в лесу means 'He ended up in the forest'.