Go on, keep on plus at plus object plus infinitive

Dear friends, a textbook says,"Other verbs can be followed by different prepositions + object + to-infinitive. For example:
at + object + to-infinitive (go on [= to criticise continually], keep on [= to talk about something many
times], scream, shout, yell)
I cant think of examples with scream, yell, shout. He shouted at me to open the door. But could you please provide the examples of (go on, keep on) used in this pattern.