The nominative case is a grammatical case for a noun, which generally marks the subject of a verb, as opposed to its object or other verb arguments.(Basically, it is a noun that is doing something, usually joined (such as in Latin) with the accusative case.)
Linguistic characteristics
The nominative case is the usual, natural form (more technically, the "least marked") of certain parts of speech, such as nouns, adjectives, pronouns and less frequently numerals and participles, and sometimes does not indicate any special relationship with other parts of speech. Therefore, in some languages the nominative case is unmarked, that is, the form or stem, with no inflection; alternatively, it may said to be marked by a zero morpheme. Moreover, in most languages with a nominative case, the nominative form is the lemma; that is, it is the one used to cite a word, to list it as a dictionary entry, etc.
Nominative cases are found in German, Latin, Icelandic, Old English, Polish, and Russian, among other languages. English still retains some nominative pronouns, as opposed to the accusative case or oblique case: "I" (accusative, "me"), "we" (accusative, "us"), "he" (accusative, "him"), "she" (accusative, "her") and "they" (accusative, "them"). An archaic usage is the singular second-person pronoun "thou" (accusative "thee"). A special case is the word "you": Originally "ye" was its nominative form and "you" the accusative, but over time "you" has come to be used for the nominative as well.
The term "nominative case" is most properly used in the discussion of nominative-accusative languages, such as Latin, Greek, and most modern Western European languages.
In active-stative languages there is a case sometimes called nominative which is the "most" marked case, and is used for the subject of a transitive verb or a voluntary subject of an intransitive verb, but not for an involuntary subject of an intransitive verb; since such languages are a relatively new field of study, there is no standard name for this case.
ubjective Case
Some writers of English employ the term subjective case instead of nominative, in order to draw attention to the differences between the "standard" generic nominative and the way it is used in English.
Generally, when the term subjective case is used, the accusative and dative are collectively labelled as the objective case. This is possible in English because the two have merged; there are no surviving examples where the accusative and the dative are distinct in form, though their functions are still distinct. The genitive case is then usually called the "possessive" form and often is not considered as a noun case per se; English is then said to have two cases, the subjective and the objective. This view is an oversimplification, but it is didactically useful.
External links
* [http://www.russianlessons.net/grammar/nouns_nominative.php Nominative Case In Russian]
* [http://www.russianresources.info/links.aspx/grammar/nouns/nom Resources around the Internet for the Nominative Case in Russian]