Profession, role, and predicate instrumental
After быть in past/future and after verbs of becoming or working as, Russian commonly uses instrumental for the role or state.
- Nominative predicates remain possible in some identificational and stylistic environments, but instrumental is the core learner target for temporary roles, change, and predicates after past/future быть.
- Time contrast: Я студе́нт now; Я был студе́нтом last year. The case contrast is constructional, not simply 'person versus object'.
| Construction | Example | Contrast |
|---|---|---|
| present identification | Он врач. | nominative with zero copula |
| past role | Он был врачо́м. | instrumental predicate |
| become | Она́ ста́ла учи́телем. | new role |
| work as | А́нна рабо́тает перево́дчиком. | profession/function |
| serve as | Э́то явля́ется причи́ной. | formal predicate relation |
Mini-check
1. Change to past: Она́ врач. 2. Build: Anna became a teacher.
Apply this next
- Retrieve the rule without looking, then continue to the next lesson.