The term 'show' can function as an adverbial in certain contexts, particularly when discussing events or actions taking place in January. An adverbial typically adds information about how, when, where, or to what extent something happens.
In the phrase 'the show in January', 'show' acts as a noun, referring to an event or exhibition. If we look for the adverbial element, it could be implied in the context. For example, if someone were to say, 'We will showcase our new products at the show in January,' here, 'showcase' is a verb that informs us about how the products will be presented. The adverbial structure in this case provides temporal information - that the showcasing will occur in January.
Therefore, while 'show' does not inherently serve as an adverb, understanding its placement within a sentence helps illuminate the relationship between time and action, demonstrating when an event is taking place.