Syntax

Syntactic actants

Actant 1: whose forehead it is
(a) Genitive
(b) Possessive
Пот струился по лбу больного. Sweat streamed down the patient's forehead.
Бросается в глаза её высокий лоб. The first thing you notice about her is her high forehead.
NB When the word лоб functions as a subject and does not have a descriptive modifier, the construction лоб у + Genitive is often preferred to (a) and (b), above:
Лоб у Наташи большой и ясный. Natasha has a high, clear forehead.