Learn Hardcore Russian: Её улыбка согревает сердце.

Её is a possessive adjective that means her. It modifies the noun улыбка to show ownership, indicating that the smile belongs to her. Note that Её is used in all cases when serving as a possessive modifier for feminine nouns, and it is distinct from ей, which is the dative form of the pronoun.

Why is the verb согревает used, and what does its form tell me about the subject?

Согревает is the third person singular present tense form of the imperfective verb согревать (to warm). It agrees with the subject улыбка, which is singular and feminine. Using the imperfective aspect here implies an ongoing or habitual action rather than a completed event.

What case is сердце in and why does its form look the same as the nominative?

Сердце serves as the direct object of the verb and is in the accusative case. For neuter nouns like сердце, the accusative form is identical to the nominative form. Hence, even though it is functioning as an object, its form remains unchanged.

How does the word order in Её улыбка согревает сердце compare to English constructions?

The sentence follows the standard subject-verb-object (SVO) order, just like its English equivalent “Her smile warms the heart.” While Russian allows for flexible word order due to its case system, this straightforward structure clearly establishes who is doing the action and what is being affected.