As we know, some noun phrases can function as adverbials (especially temporal noun phrases). Here is an example taken from Wikipedia:
- James answered this morning.
Can a single noun function as an adverbial? Nouns like "home" or "tomorrow" can function as adverbials, but they are also labelled as adverbs in many dictionaries. So we must find a "pure" noun.
If a noun with plural ending functions as an adverbial, this example can be regarded as a convincing example. (Except some special "plurals", for example "Sundays", which are labelled as adverbs in dictionaries)