Dave, who at first blew hot and cold at the idea, eventually agreed to take on the task.
I bumped into this very interesting phrasal verb. Is it frequently used by natives, please? Its meaning is "take the responsability", right?
(not a professional teacher) The OED lists around 18 meanings for "take on", but this one seems best here:
"To undertake; to begin to handle or deal with, to ‘tackle’." One of the citations for this definition is " I had taken on a task, and I was bound to see it through."
So you could say that it implies accepting the responsibility of finsihing whatever task or assignment you've "taken on".
Thanks a lot.
Is it frequently used by natives, please?
Speaking only for NZ English, I would say "very much so". A google search would suggest the same of other Englishes. It is a very common, everyday sort of expression, particularly in the working environment.