1. concern
（1）n.所关心的人或事；担心，挂念
His greatest concern is the future of his daughter.
The report expressed the public’s concerne about/for the nuclear waste.
（2）v.与……有关；涉及；使……担忧
The lecture concerned the environmental protection.
What concerns us is that so many children in the area have dropped out of school.
concerned a.关心的(about),与……有关的(with)
He is never concerned about what is going on with his family and friends.
拓展：
have no concern for毫不关心
be concerned about/for 关心
as/so far as …is concerned 就……而言
concerning prep.关于;有关
