Here's a breakdown:
* Linking verb: A verb that connects the subject to a word or phrase that renames or describes it. Common linking verbs include "be" (am, is, are, was, were, been, being), seem, become, appear, feel, look, smell, taste, sound.
* Predicate nominative: A noun or pronoun that follows a linking verb and renames the subject.
Example:
* My sister (subject) is (linking verb) a doctor. (predicate nominative)
In this sentence, "doctor" renames the subject "my sister."
Let me know if you'd like more examples or have any other questions!