In Greek we are familiar with several ways the verb may be modified in time, manner and place already.
1) One may use a participle in an adverbial manner (After leaving the store, he went home;
2) The articular infinitive is also used in an adverbial manner (before Phillip called you, I saw you....;).
3) Many prepositional phrases have an adverbial verb modifying function and indeed some adverbs actually became more prepositional in their function and are classed as “adverbial prepositions” (i.e. e@cw outside). Indeed, some words are classified as both improper preposition and adverb and some are marked by the –qen ending (o]pi
4) As in English where an adjective can be converted into an adverb by changing the ending (articulate/articulately) so in Greek using the genitive plural form an adverb may be form shifting the –wn ending to an –wj (e.g. kalw?n [good] becomes kalw?j [well].
5) There are explicit adverbs which help develop the meaning of the verb in time, manner, and location.