We reviewed this function in our overview above: The subject complement is a noun following the verb to be or other linking verb. An example should suffice to remind you of the gist of the subject complement. Remember, this function also carries the names predicate noun and predicate nominative.
2. Subject Complements (“Predicate Nouns” or “Predicate Nominatives”)
Again, here’s our model sentence:
The professor, John Smith, is the noun expert, so yesterday he gave the class his views on the importance of learning to write papers clearly, his students feverishly taking notes on all he said.
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