Nouns ending in i, y, o, u as well as those ending in l, m, r, s and z are with few exceptions all masculine.

Those ending in ão, are both masculine and feminine.

13.
Formation of the Plural.

Nouns ending in a, e, i, y, o, u and ãa form their plural by adding an s to the singular. As:

Examples.

As rosas são mais bellas que as tulipas. Os rios correm[55] por terras despovoadas[56]. As arvores são muito frondosas[57]. As villas são ornadas[58] de duas igrejas. Eu não vi os pentes[59]. Os habitantes[60] destas comarcas[61] são Indios[62]. Elles tem maçãas. Novos reis, novas leis. Deixei os bahús nos coches. Os ribeiros[63], algumas lagôas[64] e mesmo certos rios ficão em secco[65].

14.

These houses please me more than those edifices[66]. The villages[67] and towns in this district[68] are not very numerous[69]. The oxen[70], cows, goats, sheep[71] and cats[72] are domestic animals. There are[73] many wild boars[74], deer[75] and hares[76] in these forests[77]. The cranes[78] and storks[79] are birds of passage[80]. The huts[81] are made[82] of the trunks of trees[83].

15.