動詞 concern:

1. have to do with or be relevant to
   同義詞：refer, pertain, relate, concern, come to, bear on, touch, touch on
2. be on the mind of
   同義詞：concern, interest, occupy, worry

形容詞 concerned:

1. feeling or showing worry or solicitude
2. involved in or affected by or having a claim to or share in
   同義詞：interested
3. in relation (or in regard) to; especially as in the phrases
4. culpably involved
   同義詞：implicated

1. The results reflect the greatest credit upon all concerned.
   這些成績帶給所有有關人員最大的榮譽。
2. He was concerned in the crime.
   他與那起罪案有牽連。
3. Concerned parents held a meeting.
   憂心忡忡的家長們開了一次會。
4. Where money is concerned, I always try to be very careful.
   在有關錢的問題上，我總是盡量小心謹慎。
5. We are all concerned about his health.
   我們都非常關心他的健康。
6. Please don't be concerned about me.
   請不要為我擔心。

con.cerned

adj.（形容詞）
Interested and involved:
對…有興趣和有關的：
例句：
sent a memorandum to those concerned.
發(fā)一份文件給相關人員

Anxious; troubled:
擔憂；焦慮的：
例句：
the concerned parents of youthful offenders.
少年犯他們憂心的父母