The section of the robot's back he could see at the moment jerked sharply.

The leader's head jerked sharply to look back past the cab.

Polaski's head jerked upward sharply and he looked the sheriff straight in the eyes.

As it did so, its head jerked sharply and seemed to stare straight at him.

He jerked sharply at that, and I dropped my hand, startled.

A moment later his sleeping mind jerked sharply and he was instantly awake.

The water stung, and he jerked sharply at its touch.

Defensively, he turned to face her, then jerked back sharply.

The man threw up his arms oddly, jerked sharply, and fell headlong.

The general jerked sharply in his chair as if shocked.