He'd never seen one before, but knew instantly what they were.

You would have known instantly that he is the King.

I knew instantly it was not the question he wanted to ask.

I looked at myself and knew instantly that they were right.

He and everyone else in the park knew instantly that this was No. 60.

She knew instantly that this was going to be one of those days.

She felt more than saw it, knew instantly that a change had come over him.

Tom knew instantly the direction from which the sound came.

With another actor, I wouldn't know instantly what he was doing.

G-8 knew instantly that the guard did not believe him.