Russian grammar uses a case system where nouns, pronouns, and adjectives change their endings based on their grammatical function. There are six cases in Russian, each serving specific purposes in sentence structure. Let's examine how the word 'student' changes in each case.
Let's examine the first two cases. The Nominative case is the basic form used for the subject of a sentence. The Genitive case shows possession, negation, and quantity. It's used with many prepositions like 'from', 'of', and 'at someone's place'.
The Dative case indicates the indirect object - who receives the action. It's also used for age and with certain prepositions. The Accusative case marks the direct object of an action, shows direction, and indicates time duration. These cases are essential for expressing who does what to whom.
The Instrumental case shows the tool or means by which an action is performed, and indicates accompaniment. The Prepositional case is unique because it's always used with prepositions. It primarily shows location and the topic of discussion. These final two cases complete the Russian case system.
To summarize: Russian uses six cases to express grammatical relationships. Each case serves specific functions from showing the subject to indicating possession and objects. Understanding how cases work with prepositions is crucial for expressing location, direction, and means of action in Russian.