Learn Hardcore Russian: Информация полезная.

The sentence consists of a subject and a predicate. Информация is a feminine noun in the nominative case acting as the subject, and полезная is an adjective used as a predicate that describes the subject. In Russian, the linking verb (the equivalent of “is”) is commonly omitted in the present tense.

Why is there no verb such as “to be” in this sentence?

In Russian, the present tense of the verb быть (“to be”) is typically left out when stating general facts or qualities. So Информация полезная. is perfectly complete and natural, even though in English you would say “The information is useful.”

How does the adjective полезная agree with the noun информация?

Russian adjectives must agree with the nouns they modify in gender, number, and case. Since информация is feminine, singular, and in the nominative case, the adjective is also in the feminine nominative singular form, which gives us полезная.

Is the word order in Информация полезная. fixed, or can it be changed?

The word order in this simple descriptive sentence is standard, with the subject first and the predicate adjective following. Although Russian allows some flexibility in word order for emphasis or stylistic variation, this subject-predicate structure is most common for clear, straightforward statements.

What case is the noun информация in, and why is that important?

The noun информация is in the nominative case because it functions as the subject of the sentence. Using the nominative case is essential in declarative sentences, as it clearly identifies the subject being described or discussed.

How would you form a negative or a question version of this sentence?

To create a negative sentence, simply insert не before the adjective: Информация не полезная. This means “The information is not useful.” To form a question, you can maintain the same word order and use the appropriate intonation along with a question mark: Информация полезная? This relies on vocal emphasis to indicate that you’re asking a question.