The Russian accusative case.
The accusative is the case of direct objects - it marks the thing that receives the action. You need it for every transitive verb, for expressing direction, and for most time expressions. Its one big twist: masculine nouns change differently depending on whether they're alive or not.
The accusative answers кого? что? (whom? what?). It marks the direct object - whatever the verb acts on. Я читаю книгу = "I'm reading a book" (книга → книгу). Я вижу брата = "I see my brother" (брат → брата). It also handles direction (в школу - to school) and time (в среду - on Wednesday).
When to use the accusative case
The accusative is the second most common case after the nominative. Here are its main triggers.
1. Direct objects
Any time a verb acts on something - reading a book, seeing a person, buying bread - the thing being acted on goes into the accusative. This is by far the most common use.
- Я читаю книгу. - I'm reading a book.
- Он видит собаку. - He sees a dog.
- Мы купили хлеб. - We bought bread.
- Она любит музыку. - She loves music.
2. Direction with в and на
When в (in/to) and на (on/to) express direction (motion toward), the destination takes the accusative. Compare with the prepositional case, which marks static location.
- Я иду в школу. - I'm going to school. (accusative = direction)
- Я в школе. - I'm at school. (prepositional = location)
- Он едет на работу. - He's going to work.
- Мы летим в Москву. - We're flying to Moscow.
3. Time expressions
The accusative appears in several common time constructions:
- Days of the week with в: в среду (on Wednesday), в пятницу (on Friday)
- Duration: весь день (all day), всю ночь (all night), каждый день (every day)
- "Ago" constructions: неделю назад (a week ago), час назад (an hour ago)
4. After certain prepositions
Beyond в/на for direction, several other prepositions take the accusative:
- за - for, behind (motion): за стол (behind the table), спасибо за помощь (thanks for the help)
- через - through, in (time): через час (in an hour), через дорогу (across the road)
- про - about (colloquial): про книгу (about the book)
The animate vs. inanimate split
This is the accusative's signature rule, and it confuses every learner at first. The key insight: for masculine nouns, whether something is alive determines the ending.
- Inanimate masculine: no change, the word stays exactly as it is. Я вижу стол. (I see the table.)
- Animate masculine: add -а or -я. Я вижу брата. (I see the brother.) брат → брата.
- Feminine: always changes, regardless of animacy. -а → -у, -я → -ю.
- Neuter: always stays the same, regardless of animacy.
In the plural, living things and objects split for all genders: living things take a special ending (я вижу студентов - I see the students, сестёр - sisters), objects keep their plain plural form (я вижу столы - I see the tables).
Accusative noun endings
The table below shows how nouns change in the accusative. Notice how masculine depends on animacy, feminine always changes, and neuter stays put.
| Gender | Singular | Plural | Example |
|---|---|---|---|
| Masculine inanimate | No change, the word stays exactly as it is. | Plain plural ending -ы or -и. | стол (table) → стол / столы |
| Masculine animate | Adds -а or -я. | Adds -ов or -ей for living beings. | студент (student) → студента / студентов |
| Feminine | -а turns into -у, and -я turns into -ю. | Plain plural -ы or -и for things; a special ending for living beings. | книга (book) → книгу / книги |
| Neuter | No change. | Plain plural -а or -я. | окно (window) → окно / окна |
The pattern to remember: Masculine inanimate singular doesn't change. Masculine animate singular adds -а/-я. Feminine singular always gets -у/-ю. Neuter singular never changes. In the plural, living things of any gender take a special ending (студентов, сестёр); objects keep their plain plural form (столы, книги).
Pronoun forms in the accusative
Personal pronouns have their own accusative forms, and there are only seven to learn. After prepositions, third-person pronouns gain a н- prefix.
| Nominative | Accusative | After preposition | Example |
|---|---|---|---|
| я (I) | меня | меня | Он видит меня. - He sees me. |
| ты (you) | тебя | тебя | Я жду тебя. - I'm waiting for you. |
| он (he) | его | него | Я вижу его. / Я смотрю на него. |
| она (she) | её | неё | Я знаю её. / Я смотрю на неё. |
| мы (we) | нас | нас | Они ждут нас. - They're waiting for us. |
| вы (you pl.) | вас | вас | Я вижу вас. - I see you. |
| они (they) | их | них | Я знаю их. / Я смотрю на них. |
Example sentences
Real accusative usage across direct objects, direction, and time. Watch how animate and inanimate nouns behave differently.
Common pitfalls
The accusative has only a handful of endings, but the animate/inanimate rule creates its own category of mistakes.
- Forgetting the animate rule. "Я вижу брат" is wrong - animate masculine nouns must change. The correct form is "Я вижу брата." This is especially tricky because inanimate masculines don't change, so learners develop a habit of leaving masculine nouns alone.
- Confusing direction and location. "Я иду в школу" (acc. - I'm going TO school) vs. "Я в школе" (prep. - I'm AT school). Same preposition в, different case, different meaning. If you use the wrong case, you'll say "I'm going at school" or "I'm in school" when you mean "to school."
- Plural living things take a special ending. In the plural, living things of ALL genders change: "Я вижу студентов" (I see the students), "Я вижу сестёр" (I see the sisters). This catches learners who mastered the singular rules but forgot the plural extends the pattern.
- Adjective agreement. Adjectives must agree with their noun in case. "Я читаю интересную книгу" - the adjective интересная also changes to accusative (интересную). Learners often change the noun but forget the adjective.
"What are you reading?" - the word "what" is accusative. The question word что (what) is already in the accusative in questions like Что ты читаешь? (What are you reading?). The nominative and accusative of что happen to look the same, but grammatically it's accusative - it's the direct object of "reading."
Compare with the animate question word кого (whom): Кого ты видишь? (Whom do you see?). Here the accusative is visible - кто (who, nominative) becomes кого (whom, accusative), following the animate pattern. Russian preserves the who/whom distinction that English is gradually losing.
This is a useful diagnostic: if you can replace the question word with "whom" rather than "who," you're dealing with the accusative case.
Slova teaches every word with its case forms built in.
You don't just learn "книга" - you see книгу in "Я читаю книгу," and you know why it changed. Every accusative form, in context, from day one.
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