Student or Learner
I have 2 questions about "to keep on doing something":
1-Is "on" necessary? I regularly hear this phrase without it
2- Do we ever use the present continuous with it? eg: "Why are you keeping on saying this? "
I would rather say "Why do you keep on saying this?" am I right?
1 Not really
2 This example doesn't work, but you could come up with a working example. The present simple is more common, though.