2.

The sister is good. The father and the good brother. The good mother and the little sister. The great brother. My brother is little. My little brother. My mother and my good sister. My father and my mother. My good mother and my little sister.

3.
Declension of the definite Article.

Masculine.
Singular.Plural.
Nom.o,theos
Gen.do,of thedos
Dat.ao,to theaos
Acc.o,theos
Abl.do,from the. dos.
Feminine.
Singular.Plural.
Nom.a,theas
Gen.da,of thedas
Dat.á,to theás
Acc.a,theas
Abl.da,from the.das.

Declension of the indefinite Article.

Masculine.Feminine.
Nom.um,auma
Gen.de um,of ade uma
Dat.á um,to aá uma
Acc.um,auma
Abl.de um,from a de uma.

4.
Vocabulary.