concerned，concerning这两个词的词义并不相同，用法亦有异。 Concerned是分词形容词，其意为“有关的”（involved）； concerning是由分词转换而成的介词，其意为“关于”（relating to）。请看下面的例句： This agreement will be signed by the parties concerned．此协议将由各有关方面签署。 They called on all departments concerned to take prompt steps to promote the development of light industry．他们要求各有关部门迅速采取措施，促进轻工业发展。 由例句可见，concerned用作形容词解作“有关的”时，是后置定语，大都放在它所修饰的名词之后。但在动词“to be”之后而同样解作“关于”时，则要用be concerned with的形式，如： This book is concerned with English usage．此书是与英语惯用法有关。 值得注意的是，concerned（亦可表示动词之意）也可解作“关心”、“担心”、“挂…念的，担…心”的解，与之搭配的介词为at、about或，用作此意时，concerned也是形容词。例： He was deeply concerned at the news．听到这个消息时，他深为担忧。 We are all concerned about the pollution of the environment here．对这里的环境爱到污染，我们都感到不安。 Parents are naturally concerned for their children's safety．父母自然关心他们儿女的安全。 I am very concerned about her.我非常挂念她。 to concern oneself with public work关心公众事务 We're rather concerned about father's health.我们相当担心父亲的健康。 We are all concerned for [about] her safety.我们大家都担心着她的安全。 下面是concerning的例句： This is a proposal concerning the construction of the new airport．这是关于兴建新机场的一项建议。 Yesterday we wrote him a letter concerning the business arrangement．昨天我们就业务安排问题写了一封信给他。 在个别场合下，concerned with可以和concerning互换使用，原因是从句which are concerned with中的which are 省略了。例如： We had several disputes concerning/（which are）concerned with this matter．关于此事，我们曾争论过数次。 需要注意的是下列语句的区别： They were concerned（worried）about the matter．他们为此事而担忧。 They were concerned（implicated）in the matter．他们参与此事。 They were concerned （connected）with the matter．他们与此事有关。 另外作为特定词组，as far as I am concerned解作in my opinion； as far as sth is concerned解作concerning sth/ talking about sth.例： As far as I'm concerned，this plan is impractical．依我来看，这个计划不切实际。 As far as funding is concerned，some banks have agreed to provide loans．关于资金方面，一些银行同意提供贷款。 词形词义拓展： unconcerned adj.漠然的， 漠不关心的;无关的，不相干的 = indifferent It is quite indifferent to me whether you go or stay.对你的去留我毫不关心。 I am indifferent to their arguments.我对他们的争论毫不关心。