How to determine the case?
In Russian only six cases:
Why is it necessary to know how to determine the case? The definition of the case helps to put down the correct ending of the word, therefore, to avoid grammatical errors. How to determine the case of a noun, pronoun, adjective or numeral quickly and accurately?
There are special case questions, with their help and determine the identity of the parts of speech to one or another case.
Nominative: who ?, what? (fish, barrel);
Relative: Whom? What? (fish, barrels);
Dative: to whom ?, what? (fish, barrel);
Accusative: who ?, what? (fish, barrel);
Involute: by whom ?, what? (fish, barrel);
Prepositional: about whom ?, what about? (about fish, about a barrel).
To correctly determine the case, remember the above questions, two for each case. But there is a little trick: instead of twelve, you can memorize only six simple words that will help not only determine the case,but also to remember the case questions.
Definition of a case in different words
How to determine the case with the help of auxiliary words?
There is a fish (who, what) - nominative;
No fish (who, what) - genitive;
I will give a fish (to whom, to what) - dative;
I see fish (who, what) - accusative;
Satisfied with fish (who, what) - creative;
I think about fish (about whom, about what) - prepositional.
For example, consider the sentence: "The fish did not fit into the barrel." There are two nouns in this sentence: fish, a barrel. Substitute auxiliary words: there is (who, what) fish - nominative case; I see (who, what) the barrel - the accusative case.
Substituting the question to the word, you can determine the case of pronouns. Examples: she was not given a ticket. To her (to whom, to what) is the dative case. I think about him all the time. About him (about whom, about what) - prepositional case.
If difficulties arise, then the pronoun can be replaced by a noun appropriate in meaning: all the time I think about my son. About the son (about whom) - prepositional.
When it is already clear how to determine the case of pronouns and nouns, one can consider numerals and adjectives.
How to determine the case of the adjective and numeral? Adjectives and numerals have the same case as the nouns to which they refer.
Big fish is swimming. Big fish (who, what) - nominative case.
I go to the first meeting. The first meeting (of whom, what) is the accusative case.
If the noun in the sentence is omitted, then the case can be determined by substituting the appropriate word:
Goes the most beautiful. Beautiful (girl) - who, what - nominative case.
After the tenth, all will close. The tenth (number) - whom, then - the genitive case.
If you understand the above material well, then the question of how to determine the case of a numeral, adjective, pronoun, or noun will no longer arise.