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Partitive Genitive.

346.

Words denoting a Part are followed by the Genitive of the Whole to which the part belongs.

a. Partitive words, followed by the genitive, are -

1. Nouns or Pronouns (cf. also 3 below): -

2. Numerals, Comparatives, Superlatives, and Pronominal words like alius, alter, nullus, etc.: -

NOTE 1: In classic prose neuter adjectives (not pronominal) seldom take a partitive genitive, except multum, tantum, quantum, and similar words.

NOTE 2: The genitive of adjectives of the third declension is rarely used partitively: nihil novi (genitive) , nothing new; but, nihil memorabile (nominative) , nothing worth nuntion (not nihil memorábilis).

4. Adverbs, especially those of Quantity and of Place: -

b. The poets and later writers often use the partitive genitive after adjectives, instead of a noun in its proper case: -

c. Cardinal numerals (except mília) regularly take the Ablative with e (ex) or de instead of the Partitive Genitive. So also quidam, a certain one commonly, and other words occasionally: -

d. Uterque, both (properly each) and quisque, each, with Nouns are regularly used as adjectives in agreement, but with Pronouns take a partitive genitive: -

e. Numbers and words of quantity including the whole of any thing take a case in agreement, and not the partitive genitive. So also words denoting a part when only that part is thought of: -