I jerked my hand away. J'ai brusquement écarté ma main.
to jerk one's head up relever brusquement la tête
→ I jerked my head up and stared at her.
to jerk sth back [+hand, head] rejeter qch en arrière
→ I cried out and jerked my hand back.
→ The kitten suddenly scratched me on the nose. I jerked my head back, hit the wall, and started bleeding.