How to Ordinal Numbers Function?
Like Adjectives
пéрвый / пéрвое / пéрвая / пéрвые
1st
What does the construction used for Date Expressions in Russian depend on?
The Type of Question asked
What cases are used for the question “What is the date today”?
the ordinal number of the date
in the nominative case, with neuter ending, followed by the month in the genetive case
Како́е сего́дня число?
What is the date today?
Сего́дня два́дцать пе́рвое сентября́.
Today is the 21st of September
(on) the 31st of August
три́дцать пе́рвого а́вгуста
What construction is used for the question “On What date is X occuring?”
To say ‘on’ a particular date, the whole phrase needs to take the genitive case:
‘до’
until (followed by Genitive)
‘с’…‘до’
From…Until… (all in Genitive)
What case is used for Greetings and Wishes?
Genitive
What case is used to express seasons and parts of the day?
Instrumental, no prepositions used