Relacionar Columnas Brown’s MLU stagesVersión en línea Test yourself on Brown’s research on morphological acquisition by matching pairs of morphemes with the month age of mastery. por Som Person 1 Regular past 2 Irregular past 3 Present progressive 4 Possessive ‘s’ 5 Regular third person 6 Regular plural 27-33 19-28 28-50 26-48 26-40 25-46 1 Early II 2 Early III 3 Late III 4 Early I 5 Late II 6 Late I 27-28 33-34 28-30 12-22 22-26 31-32