1.concern的基本意思是“与…有关”,指人〔物,事物〕之间的联系与影响,引申可指“关心”“关切”“使担忧”“使烦恼”。
2.concern作“与…有关”解时是及物动词,接名词、代词或名词从句作宾语。可用于被动结构。
3.concern作“担心”“挂念”解时,主语一般是人,常与介词about, for或over连用。
4.concern常与指人的反身代词连用,表示“关心,关注”，其后常接介词about, in或with。
5.concern后可接由that, where或how等关系代词引导的从句。
6.concern的过去分词concerned在句中常作后置定语。

concern about〔over〕(v.+prep.)
使关心 give one's attention to
▲concern oneself about〔over〕 sb/sth/wh-clause
She is always concerning herself about him.她一直在关心他。
Don't concern yourself about this matter.别为这个问题担心。
There is no need for you to concern yourself about where I was last night.你没必要关心我昨晚在哪儿。
It's a waste of time to concern yourself over other people's troubles.为别人的麻烦事操心,纯粹是浪费时间。
◇ 常用于be ～ed结构
Why are you so concerned about the boy's safety?为何你如此担心那孩子的安全?
He is concerned about her illness.他担心她的病情。
The leader was much concerned over the plight of the refugees.那位领导人对难民的悲惨境况很担忧。

concern for(v.+prep.)
使为…担心 worry about (sth/sb)
▲concern for sb/sth
He said he had concerned for me very much last night.他说他昨晚好担心我。
We all concerned for her safety.我们都很担心她的安全。

concern in(v.+prep.)
参与 take part in (sth)
▲be concerned in sth
He was concerned in the crime.他与犯罪有牵连。
More than one person has been concerned in this affair.不止一个人卷入了此事。
The law firm was concerned in the building contract.这个法律事务所参与了这项建筑合同的签订。

concern with(v.+prep.)
1.与…有关 have relation to
▲be concerned with sb/sth
The book is concerned with political economics.这本书研究的是政治经济学。
The film is concerned with unemployment.这部影片是有关失业问题的。
Electronics is also concerned with controls.电子学也与控制技术有关。
We could not prove he was concerned with the crime, so we had to release him.我们无法证明他与此罪行有关,因此不得不释放了他。
2.关心 interest oneself in
▲concern oneself with sb/sth
A good doctor should always concern himself with his patients.一个好的医生应当时时刻刻关心着他的病人。
Don't concern yourself with matters that are not your business.不要为与你无关的事操心。
You have to concern yourself with this matter.你得管管这事。
She concerned herself with the problem of illiteracy.她关心文盲问题。

as concerns
关于,涉及 affect
▲as concerns sb/sth
As concerns him,I have nothing to say.关于他,我没有什么可说的。

so〔as〕 far as...be concerned
就…来说,就…而论 concerning for that matter
This arrangement is quite satisfactory, so far as I am concerned.就我来说,这样的安排很好。
As far as we ourselves are concerned, we are safe and sound.至于我们自身,则安然无恙。

用作及物动词
▲S+～+n./pron.
These problems concern all of us.这些问题与我们所有的人都有关系。
It doesn't concern me at all.此事与我毫不相干。
The principal issues in dispute concern the duration of the future treaty.有争议的主要问题牵涉到将来条约的期限。
This is a great event that concerns the future of our company.这是关系到我们公司前途的大事。
The second question concerns our method of work.第二个问题牵涉到我们的工作方法。
◇ 用于be ～ed结构
We are firm where our principles are concerned.在涉及原则问题时我们是坚定不移的。
▲S+～+wh-clause
In short, the style concerns not what a writer says but how he says.简言之,风格不是跟作者说什么有关,而是跟如何说有关。
其他
The police are anxious to interview everyone concerned in last night's accident.警察急于会见与昨晚事故有关的每个人。
We shall have to consult with the other countries concerned.我们得和其他有关的国家商议。
All such problems concerning the well-being be placed on our agenda.所有这类关系到群众生活的问题都应该提到我们的日程上来。

be concerned about, care for
参见care条。

［同义词］ n. anxiety, business, concernment, worry
［词源］＜拉丁语concernere(涉及)

Their main concern is that they are not receiving enough money.他们最忧虑的是他们一直没有得到足够的钱。
What is his main concerns as a teacher?身为教师,他对什么最感兴趣?
Their little shop is no longer a paying concern.他们的小店已赚不到钱了。
I haven't concern in the business.我在这企业中没有股份。

concern, affair, business, matter, thing
参见affair条。
concern, care
参见care条。