"It will take 7 years for you to become a good doctor" is correct but I would like to know if this would be also correct " It will take 7 years to becoming a good doctor" .
I don't think so because "to" is not a preposition we can't say "it will take 7 years to a good doctor"it doesn't mean anything so using a gerund seems not correct to me in that case.
Am I right?
