Questions & Answers about Эта ситуация совершенно новая для меня.
Because ситуация is a feminine noun in the nominative case.
– эта is the feminine singular demonstrative pronoun (“this”).
– это is the neuter singular demonstrative pronoun and wouldn’t agree with a feminine noun.
Adjectives in Russian must agree with the noun they modify in gender, number, and case.
– новая is the nominative singular feminine form of новый.
– новый is masculine, новое is neuter, and новые is plural.
совершенно is an adverb meaning “completely” or “absolutely.” It modifies the adjective новая, intensifying it.
– Word order in Russian is relatively flexible, but adverbs of degree typically precede the adjective they modify: совершенно новая.
для is a preposition that always requires the genitive case.
– меня is the genitive form of я (“I”).
So для меня literally means “for me.”