I mean, after you've concentrated on me for the next half hour.

I could not concentrate for more than a second or two at a time.

Concentrate on the game, if only for a little while.

She looked away from him and concentrated on her food for a while.

I had trouble concentrating for the rest of the day.

The best way to get through it is to concentrate on something else, at least for me.

If technology continues on its current course, your car will do the concentrating for you.

He had to concentrate for the good of the ship.

He took a step closer to me and seemed to concentrate for just a moment.

He seemed to concentrate for a moment, then shook his head.