UPOR, Rose A. When It Makes Little or No Difference: The Influence of Instruction on the Acquisition of the English Past Tense among Tanzanian Learners. Papers in Education and Development, [S. l.], n. 32, 2018. Disponível em: http://196.44.161.124/index.php/ped/article/view/1473. Acesso em: 7 apr. 2026.