Questions & Answers about Я купил новые брюки.
Why is брюки used in the plural form? Aren’t pants a single item?
In Russian брюки is a “pluralia tantum” noun—just like pants in English. You never say a singular брюко or брюкo. Even when you buy one pair, you treat it grammatically as a plural.
Which case is новые брюки in?
They are in the accusative case because they are the direct object of the verb купил. For inanimate nouns, the accusative plural form is identical to the nominative plural, so брюки remains брюки, and новые stays новые.
Why is the adjective новые and not новый or новых?
Adjectives in Russian must agree with their nouns in gender, number, and case. Here брюки is plural and in the accusative case. For inanimate plurals, the accusative ending for adjectives matches the nominative plural ending -ые (or -ие), so новые is correct. Новый would be masculine singular; новых is the genitive plural form.
Why is there no word for “the” or “a” in this sentence?