Learn Hardcore Russian: Бабушка всегда рассказывает удивительные истории. - Grandmother always tells amazing stories.

Бабушка translates to grandmother. In this sentence, it is the subject, appearing in the nominative case and carrying out the action described by the verb.

How is the verb рассказывает formed, and why does it have the ending -ет?

Рассказывает is the third person singular form of the verb рассказывать in the present tense. The ending -ет is used to agree with the singular subject (Бабушка) in the third person. This reflects the standard conjugation pattern in Russian for such verbs.

Why is the adjective удивительные in the plural form, and how does it agree with истории?

The adjective удивительные is in the plural form because it modifies истории, which means stories and is plural. In Russian, adjectives must agree with the nouns they describe in number, gender, and case. Here, since истории is a feminine noun in the plural (with its accusative form identical to its nominative for inanimate objects), the adjective takes the plural ending -ые.

What role does the adverb всегда play, and can its position in the sentence be changed?

Всегда means always and functions as an adverb of frequency modifying the verb рассказывает. While Russian word order is flexible, placing всегда before the verb is typical and emphasizes the habitual nature of the action. If moved nearer to the subject or even to the end of the sentence, the meaning would remain similar, though the emphasis might subtly shift.

Which cases are demonstrated in this sentence, particularly with истории, and what does that tell us about noun–adjective agreement in Russian?

Бабушка is in the nominative case as the subject, while истории—although serving as the object of the verb—is in the accusative case. For inanimate feminine nouns (and plural forms in many cases), the accusative is identical to the nominative. Therefore, both истории and the adjective удивительные appear in forms that agree in number and case, following standard Russian agreement rules.