Russian Genitive vs Accusative: Which Case Do You Need?
Distinguish Russian object forms, possession and negation.
RU001 · RU · A1 / A2 / B1 · cases
The question
When do Russian nouns take the genitive instead of the accusative?
The accusative commonly marks a direct object: Я читаю книгу (I am reading a book). The genitive commonly appears after нет: У меня нет книги (I do not have a book).
Animacy also matters: for many masculine singular and plural animate nouns, the accusative has the same form as the genitive. For an inanimate masculine noun, the accusative often matches the nominative.
Compare
| Function | Russian | Meaning |
|---|---|---|
| Direct object | Я вижу стол. | I see a table. |
| Negated existence | Здесь нет стола. | There is no table here. |
Common mistake
Negation does not automatically require the genitive: accusative objects also occur under negation, depending on construction and meaning.
Animacy changes the shape of some accusatives
| Noun | Direct-object sentence | What to notice |
|---|---|---|
| стол (table) | Я вижу стол. (I see a table.) | Inanimate masculine singular: accusative = nominative |
| студент (student) | Я вижу студента. (I see a student.) | Animate masculine singular: accusative = genitive |
| книга (book) | Я читаю книгу. (I am reading a book.) | Feminine -а changes to -у in the accusative |
Quantity and possession offer other useful genitive contexts: стакан воды means a glass of water. The preposition без also takes genitive: без сахара (without sugar). By contrast, many verbs of seeing, reading and buying take accusative direct objects.
Common mistake
Do not identify a noun's case from its ending alone. Студента may be a genitive form or an accusative animate direct object: the sentence determines the function.
Remember
Choose cases by syntax and meaning, and always account for animacy.