v.t./i.動詞 (及物/不及物)有關係的I’m concerned about your attitude
v.t./i.動詞 (及物/不及物)涉及;關係到The decision they made concerned our future
v.t./i.動詞 (及物/不及物)擔心;掛念Her speech is concerned about children's violence at schools
v.t./i.動詞 (及物/不及物)擔心的I'm concerned about my children's future
adj.形容詞擔心的Another concerned citizen donated some money for the poor dog
adj.形容詞有關的;相關的All those concerned should report to the office
v.t./i.動詞 (及物/不及物)使自己參與He concerned himself with helping the poor
adj.形容詞關懷的A concerned citizen reported the incident to the police.
prep.介系詞關於The report is concerned with the effects of pollution.