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Case grammar is a linguistic theory that analyzes sentence structure based on the relationship between a verb and a set of semantic cases. These cases describe the deep structure of sentences, indicating the roles of different components in relation to the verb.1

In English grammar, nouns are discussed in terms of case, which describes their function within a sentence. While English nouns do not change form based on case, other languages do. Common cases include the nominative (subject of a verb), accusative (direct object), and genitive (possessive). Many languages, like Uralic languages, use case suffixes or postpositions to show word function.23456

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