Theoretical grammar is the study of essential components of any human language. Here are some examples to help with understanding this concept.
Universal grammar (UG) (noun): a linguistic theory attributed to Noam Chomsky that proposes that the ability to learn grammar is built into the human brain from birth, regardless of language.
According to this "universal grammar theory," every language follows some of the same rules. Every language has a way of asking a question or making a negative statement. Furthermore, every language has a way of indicating gender or whether something happened in the past or in the present.
If the basic grammar laws for all languages are the same, a child only needs to follow the specific set of rules that his peers follow in order to understand and produce their native language. In other words, his environment determines which language he will use, but he is born with the tools necessary to effectively learn any language.
Chomsky did not believe that simply being exposed to a language was sufficient for a young child to become proficient at understanding and producing it. He thought that humans are born with the ability to learn languages. Chomsky's theory holds that the basic structures of language are already encoded in the human brain at birth.
According to the theory of universal grammar, if humans are raised in normal circumstances. Then they will always create language with specific properties.
Distinguishing between nouns and verbs, or function words and content words.
The key mystery is how speakers learn about their language's restrictions, because expressions that violate those restrictions are not present in the input and are marked as such.