A
noun clause is a subordinate clause that does the work of a noun in a sentence.
Also known as a nominal clause.
It
can be a subject, predicate nominative, direct object,
appositive,
indirect object, or object of the preposition.
Notice that some of these words also introduce adjective and adverbial clauses.
A clause is a noun clause if a pronoun (he, she, it, or they) could be
substituted for it.
