Syntax

Syntactic actants

Actant 1: whose neck it is
(a) Genitive
(b) Possessive
Он крепко обхватил шею сына. He threw his arms around his son's neck, and hugged him.
Его шея была чёрная от загара. His neck was brown from the sun.
NB When the word шея functions as a subject and does not have a descriptive modifier, the construction шея у + Genitive is often preferred to (a) and (b), above:
Шея у него была чёрная от загара. His neck was brown from the sun.