Question

Identify the noun clause in the sentence below and define its function.

Whoever is tallest should put the books away.

Answer 1

The answer to your question would be that the noun clause in the sentence above would be the following one: Whoever is tallest. What is more, the function of this clause is to be the subject of the sentence.

A noun clause is a dependent clause that acts as a noun. Therefore, they can act as subjects, direct objects, indirect objects, predicative nominatives, or objects of a preposition.

Answer 2

Noun clause is a dependent clause that acts as a noun in a sentence.  In the given sentence above, the "Whoever is tallest" is the noun clause.  It contains the subject "whoever" and the verb "is".  The clause functions as the SUBJECT of the sentence.