Questions & Answers about Я вижу их в парке.
Why is их used in this sentence instead of они, and what role does it play?
In Russian, они is the nominative form meaning “they,” used when “they” is the subject of a sentence. их is the accusative form (identical in form to the genitive) of the 3rd person plural pronoun, meaning “them.” Here, их is the direct object of the verb вижу (“I see them”).
What case is парке in, and why is the preposition в used before it?
Парке is in the prepositional case, which is used after certain prepositions (like в, на) to indicate location (“in,” “on”). The structure в + prepositional case means “in/at.” So в парке literally means “in the park.”
What is the difference between в парк and в парке, and why do we use в парке here?
В парк uses the accusative case after в, meaning “into the park” (motion toward).
В парке uses the prepositional case after в, meaning “in the park” (location).
Since Я вижу их в парке describes where the seeing happens (location), we use в парке.
Can you omit я in Я вижу их в парке, and if so, what changes?