Erzhumanova А. and Elubai А. 2019. English Indefinite Aspect: Development in Diachrony and Synchrony. Bulletin of L.N. Gumilyov Eurasian National University. PHILOLOGY Series. 128, 3 (Sep. 2019), 83–91. DOI:https://doi.org/10.32523/2616-678X-2019-128-3-83-91.