In which sentence is the underlined word or group of words a predicate nominative?

Question

Polio is a contagious disease that has mostly been eradicated.

Jonas Edward Salk became famous for developing a polio vaccine.

In the 1940s, polio was widespread.

Answer 1

The underlined word or group of words is a predicate nominative in the sentence:

"In the 1940s, polio was widespread."

In this case, "widespread" acts as a predicate nominative, renaming or providing more information about the subject "polio."

(Note: "widespread" is an adjective here. A correct example with a predicate nominative would require a noun, like "Polio was a widespread illness.")

If we were to note a true predicate nominative from your provided sentences, none exemplify that accurately, as they all contain adjectives or additional information rather than direct noun equivalents. If you have a specific structure in mind for a true predicate nominative, please share!