He looked up at her, as if startled by the question.

Both looked up, obviously startled by the sound of her voice.

Three hours later she woke up, startled by a sound.

Suddenly a huge bird took off ahead of them, perhaps startled by their approach.

And then he started, as if startled by a flash of light.

He looked slightly startled by her words, then let out a laugh.

Kirk asked, startled by the human quality of the computer's voice.

The approaching man stopped, startled by the call, and then he came on quickly.

She seemed startled by the contact at first, then relaxed.

The driver of the second car turned, startled by the noise.