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).
The accusative is the second most common case after the nominative. Here are its main triggers.
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.
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.
The accusative appears in several common time constructions:
Beyond в/на for direction, several other prepositions take the accusative:
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.
In the plural, the animate/inanimate split applies to all genders: animate plural accusative = genitive plural, inanimate plural accusative = nominative plural.
The table below shows how nouns change in the accusative. Notice how masculine depends on animacy, feminine always changes, and neuter stays put.
| Type | Nominative | Accusative Singular | Accusative Plural |
|---|---|---|---|
| Masc. inanimate (hard) | стол (table) | стол | столы |
| Masc. animate (hard) | брат (brother) | брата | братьев |
| Masc. inanimate (soft) | словарь (dictionary) | словарь | словари |
| Masc. animate (soft) | учитель (teacher) | учителя | учителей |
| Feminine (-а) | книга (book) | книгу | книги |
| Feminine (-я) | неделя (week) | неделю | недели |
| Feminine animate (-а) | сестра (sister) | сестру | сестёр |
| Neuter (-о) | окно (window) | окно | окна |
| Neuter (-е) | море (sea) | море | моря |
The pattern to remember: Masculine inanimate singular doesn't change. Masculine animate singular borrows from the genitive. Feminine singular always gets -у/-ю. Neuter singular never changes. In the plural, animate nouns of any gender borrow from the genitive plural; inanimate nouns borrow from the nominative plural.
Personal pronouns in the accusative are identical to their genitive forms. 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. |
Real accusative usage across direct objects, direction, and time. Watch how animate and inanimate nouns behave differently.
The accusative has fewer forms than the genitive, but the animate/inanimate rule creates its own category of mistakes.
"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.
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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