Questions & Answers about Пожарный спасает ребёнка.
Because ребёнка is the direct object of the verb спасает.
- ребёнок = nominative singular, used for the subject
- ребёнка = accusative singular
For animate masculine nouns in Russian, the accusative singular usually looks like the genitive singular. So:
- ребёнок → subject: Ребёнок спит. = The child is sleeping.
- ребёнка → object: Пожарный спасает ребёнка. = The firefighter is saving the child.
This is a very common pattern in Russian.
- Пожарный is in the nominative case because it is the subject.
- ребёнка is in the accusative case because it is the direct object.
So the structure is:
- Пожарный = who is doing the action
- спасает = the action
- ребёнка = who is receiving the action