He turns against his friends when they disagree with him.

She is turning against her friends.

She is turning down the job offer.

She turns down the job offer.

She is turning off the lights before leaving the room.

He turns off the lights before leaving the room.

He turns up late for every meeting.

She is turning up the volume on the radio.

He turns back and walks in the opposite direction.

She is turning back to see if she left her keys at home.