Hi Maluues,
tracing back the German sentence you probably had in mind, I'd say the sentence should be rewritten, as in:
He is educated in teaching us well.
OR
He has (professional) qualifications in teaching us well.
So you may think of another example to discuss the past/perfect problem.
Regarding your question about adverbs:
Either can be used.
(mind the spelling of 'w
hether'; wether is an animal
)
I would be very pleased if you could help me. can I say this?
Yes, you can.
