Editing Romanian grammar (section)

===Indefinite article===
The Romanian indefinite article, unlike the definite article, is placed before the noun, and has likewise derived from [[Latin language|Latin]]:

{| class="wikitable"
! rowspan=2 |
! colspan=2 | Masculine
! colspan=2 | Feminine
|-
! Singular || Plural || Singular || Plural
|-
! Nominative<br />Accusative
| Lat. acc. ''ūnum''<br /> → Rom. ''un''
| Lat. ''nescio quid''<br /> → Rom. ''niște''
| Lat. acc. ''ūnam''<br /> → Rom. ''o''
| Lat. ''nescio quid''<br /> → Rom. ''niște''
|-
! Genitive<br />Dative
| Lat. dat. ''ūnī'', infl. by ''cui''<ref name="Herman">Herman (2000), p. 68.</ref><br /> → Rom. ''unui''
| Lat. gen. ''ūnōrum''<br /> → Rom. ''unor''
| Lat. gen./dat. ''ūnae'', infl. by ''cui''<br /> → Rom. ''unei''
| Lat. gen. ''ūnōrum'' (gender distinction lost)<br /> → Rom. ''unor''
|}

(The Latin phrase ''nescio quid'' means "I don't know what".)

Nouns in the vocative case cannot be determined by an indefinite article.

Examples of indefinite article usage:

*Masculine:
**nominative/accusative: singular ''un copil'' (a child) – plural ''niște copii'' ([some] children);
**genitive/dative: singular ''unui copil'' (of/to a child) – plural ''unor copii'' (of/to [some] children);
*Neuter:
**nominative/accusative: singular ''un loc'' (a place) – plural ''niște locuri'' ([some] places);
**genitive/dative: singular ''unui loc'' (of/to a place) – plural ''unor locuri'' (of/to [some] places);
*Feminine:
**nominative/accusative: singular ''o masă'' (a table) – plural ''niște mese'' ([some] tables);
**genitive/dative: singular ''unei mese'' (of/to a table) – plural ''unor mese'' (of/to [some] tables);