1 DEFINITIONS NOMINAL CLAUSE IS JUST AS NOUN PHRASES MAY OCCUR AS SU...

2.1 Definitions

Nominal clause is just as noun phrases may occur as subject, object, of

adjective) It depends on [what happens next]... (The Oxford Dictionary of

English Grammar, Sylvia Chalker and Edmund Weiner)

A noun complement, appositive, and prepositional complement, so every

Nominal clause may occur in some or all of these roles. But the occurrence of

nominal clauses is limited by the fact that they are normally abstract such as

they refer to events, facts, states, ideas, etc‖, (Randolph Quirk Sidney

Greenbaum. 314, 315)

The clause is doing the same work as the noun, so it is called a noun clause

(L.G.Alexander, Longman English Grammar. 1992:13)

Nominal clauses, other than nominal relative clauses, tend to be abstract in

meaning. A nominal clause can be a subject, object, or complement in sentence

structure. It can be a subject, predicate nominative, direct object, appositive,

indirect object, or object of the preposition. Some words that introduce noun

clauses are that, whether, who, why, whom, what, how, when, whoever, where,

and whomever. Notice that some of these words also introduce adjective and

adverbial clauses. To check whether a clause is a noun clause, try substituting

the appropriate pronoun (he, she, it, or they).

Ex: I know who said that. (I know it.)

Whoever said it is wrong. (He is wrong.)

Sometimes a noun clause is used without the introductory word.

Nominal clauses function as nouns and may be replaced with a pronoun. Like a

noun, a nominal clause names a person, place, thing, or idea. A nominal clause

may function in a sentence as a subject, subjective complement, appositive,

object of preposition, direct object or indirect object.

(https://traloihay.net)

A nominal clause (noun clause) functions like a noun or noun phrase. It is a

group of words containing a subject and a finite verb of its own and contains one

of the following: that | if | whether. Noun clauses answer questions like

―who(m)?‖ or ―what?‖ For example: I wondered whether the homework was

necessary. (https://traloihay.net)

In conclusion, nominal clause is a subordinate clause that functions as noun

phrase.