I am not a teacher.Dear Teachers
I am confused with the difference in meaning and usage of "concern" and " be concerned"
We are concerned (concern) to learn from the XXX that the service rendered by our ground staff in Taipei fell short of your expectation whilst checking in for flight XXX on 6XXX and we are sincerely sorry for all the frustration and inconvenience you were caused on this occasion. We learn from our record that your travel agent has arranged your booking .................. must apologise for any poor impression created by the staff concerned (concerned staff)
I understand the 1st "concerned in the above paragraph is acted like a "adj" but wouldnt it be ok to just put a verb "concern" there?
No because concerned is the complement of the verb are and refers (or links) to the subject we.
The 2nd word in red, can the word "concerned" be put at the front of staff? if not, when should it be put after the verb and when should it be put before the verb?
No because concerned would modify staff (in concerned staff) - meaning the staff are concerned. The staff concerned means the staff involved.
Student or Learner