"You knew?" said Harry. "You knew I'm a –– a wizard?"
"Knew!" shrieked Aunt Petunia suddenly. "Knew! Of course we knew! How could you not be, my dratted sister being what she was? Oh, she got a letter just like that and disappeared off to that –– that school –– and came home every vacation with her pockets full of frog spawn, turning teacups into rats. I was the only one who saw her for what she was –– a freak! But for my mother and father, oh no, it was Lily this and Lily that, they were proud of having a witch in the family!"
She stopped to draw a deep breath and then went ranting on. It seemed she had been wanting to say all this for years.
-- Harry Potter and the Sorcerer's Stone by J.K. Rowling
Is the phrase this construction of OALD: go on doing something –– to continue an activity without stoppingHe said nothing but just went on working?