looked back
She looked back.
He looked back.
El anciano se paró de repente y miró hacia atrás.
The old man suddenly stopped and looked behind him.
Él nunca más miró hacia atrás.
He never looked back again.
Tom nunca miró hacia atrás.
Tom never looked back.
Él miró hacia atrás y me sonrió.
He looked back and smiled at me.
Él se volteó y miró hacia atrás.
He turned around and looked back.