Knowing something about substitution frames in a language helps you to learn about the kinds of grammatical categories that exist in that language.

Question

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Substitution frames involve replacing words or phrases in a sentence with others to test which replacements are grammatically acceptable. This process helps identify the grammatical categories (such as noun, verb, adjective) that exist in a language, as only words of the same category can typically be substituted for each other without rendering the sentence ungrammatical.

Knowing Something About Substitution Frames in a Language Helps You