Jimmy s clothes are everywhere! everywhere是adv,而beV後不是只能放n或adj嗎?

Verb-to-be can act as a linking verb or an intransitive verb in a sentence.

1. as linking verb, the structure is:
Subject + verb-to-be + Subject Complement.
~ where subject complement must be either a noun (predicate nominative) or an adjective (predicate adjective).

2. as intransitive verb, the structure is:
Subject + verb-to-be + adverbial complement
~ where adverbial complement must be either an adverb or a prepositional phrase.

Jimmy's clothes are everywhere.
(this sentence belongs to the above structure #2, telling the location of the subject)

Jimmy's clothes are everywhere (n.). ←← 華文譯：吉米的衣服到處都是。)
# everywhere. ad. 副詞：1.到處，處處；無論何處 2.完完全全，徹頭徹尾。// n. 名詞：1.每個地方，所有地方，四面八方[S] 2.無限空間[the S]。