Predicate adjectives in English grammar are adjectives and adjective phrases that perform the grammatical function of subject complement. Subject complements are words, phrases, and clauses that follow a copular, or linking, verb and refer back to modify, describe, or complete the grammatical subject of the clause.
Predicate adjective is a grammatical function.
The grammatical form that can function as the predicate adjective in English grammar is the adjective phrase.
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