2005 Vauxhall Corsa NO ACCELERATION

I LEFT ON CAR LIGHTS FOR ABOUT TEN MINUTES, WENT TO START CAR IT MADE FUNNY CLICKY SOUND,I ASSUMED IT WAS BATTERIE OR STARTER MOTOR, SO BUMPSTARTED THE CAR, IT STARTED BUT HAS NOTHING FROM ACCELERATOR , IT MAKES A VERY SLIGHT SOUND WHEN I PRESS PEDAL BUT THATS ALL,I TURNED OFF ENGINE AND STARTED CAR WITH KEY, IT STARTED FINE BUT DONT REV.
PLEASE HELP,