Here's a breakdown:
* Predicate Noun: This is a noun that follows a linking verb (like "is," "are," "was," "were," "seems," "becomes") and renames or identifies the subject of the sentence.
* Nominative: This is a grammatical case (like the subject case) that indicates a noun is the subject of a verb.
In essence, a predicate noun is a noun that is in the nominative case because it acts as the subject of the sentence.
Example:
* "My sister is a doctor."
* "Sister" is the subject.
* "Is" is the linking verb.
* "Doctor" is the predicate noun.
Key Points:
* Linking Verbs: The presence of a linking verb is crucial to identify a predicate noun.
* Renaming/Identifying: The predicate noun renames or identifies the subject.
* Nominative Case: The predicate noun is in the nominative case because it functions as the subject.
Therefore, while the terms "predicate noun" and "nominative" have slightly different focuses (one focuses on the function, the other on the case), they ultimately refer to the same grammatical element.