Alves MG, Machado FC da S, Nespoli JB. A proposal for teaching the perfect aspect associated with the past tense to Brazilian learners of English as an additional language. TheESP [Internet]. 2025 Jun. 27 [cited 2025 Dec. 5];46(1):754-70. Available from: https://revistas.pucsp.br/index.php/esp/article/view/64439