Common Mistakes : Concern

verb

.BAD: As far as I concern, the cost of the repair is not my responsibility
.GOOD: As far as I’m concerned, the cost of the repair is not my responsibility

: as far as sb/sth is concerned
.As far as my parents are concerned, I’m free to come whenever I like
.As far as the law is concerned, you are innocent until proven guilty
.As far as your grammar is concerned, you seem to be having a problem with tenses

.BAD: You should concern more about your health
.GOOD: You should be more concerned about your health

.BAD: There are far more serious things to concern about
.GOOD: There are far more serious things to be concerned about

: ( be concerned about sth (= be worried or anxious
The government is becoming increasingly concerned about the rising level of unemployment
.The manager is naturally very concerned about the recent spate of injuries

.BAD: The first chapter is concerned about the disposal of nuclear waste
.GOOD: The first chapter is concerned with the disposal of nuclear waste
.GOOD: The first chapter concerns the disposal of nuclear waste

be concerned with sth OR concern sth = (of a book, film, essay etc) be about a particular subject
.The article is concerned with recent developments in primary education

.BAD: Some dentists are more concerned in earning money than doing a good job
.GOOD: Some dentists are more concerned with earning money than doing a good job

: be concerned with (doing ) sth = be interested in
.We should be more concerned with re-educating criminals than punishing them