Definition and Examples of Prepositional Adverbs
https://www.thoughtco.com/prepositional-adverb-1691528Words that can function as prepositional adverbs include: about, above, across, after, along, around, before, behind, below, between, beyond, by, down, in, inside, near, on, opposite, out, outside, over, past, round, since, through, throughout, under, up, …
Adverb Prepositional Phrases - English Grammar 101
https://www.englishgrammar101.com/.../adverb-prepositional-phrasesAn adverb prepositional phrase modifies a verb, adjective, or adverb. It usually tells when, where, how, why, or to what extent ( how many, how much, how long, or how far ), and under what condition. Modifying a verb: We always go \ to the beach \ on the weekends. (Where and when we go.) Modifying an adjective: You look tired \ from all the heat.