concern的固定搭配如下：
一、作为名词（名词搭配）：
1、Environmental Concerns: 环境问题
We should address environmental concerns to protect our planet.
2、Health Concerns: 健康问题
The government is raising awareness about health concerns such as obesity and smoking.
3、Safety Concerns: 安全问题
The school addressed safety concerns by installing security cameras.
4、Economic Concerns: 经济问题
The company is facing economic concerns due to the recession.
5、Humanitarian Concerns: 人道主义关切
The organization focuses on humanitarian concerns, providing aid to refugees.
6、National Concerns: 国家问题
National concerns include issues related to security and economic stability.
二、作为动词（动词搭配）：
1、Concern Oneself with (Something): 关心，关注
She concerns herself with social issues and volunteers at local charities.
2、Concern (Someone) about (Something): 使某人担忧
His behavior concerned his parents about his mental health.
3、Be Concerned about (Something/Someone): 担忧，关心
People are increasingly concerned about climate change and its impact on the environment.
4、Raise Concerns: 提出担忧
The employees raised concerns about the working conditions in the factory.
5、Express Concern: 表达担忧
The teacher expressed concerns about the students' lack of interest in the subject.
6、Address Concerns: 解决担忧
The company is working to address customers' concerns regarding product quality.
7、Lay Concerns to Rest: 消除担忧，安抚
The manager tried to lay the employees' concerns to rest by explaining the new policies.
8、Voice Concerns: 表达担忧
The citizens voiced their concerns about the proposed construction project in the town meeting.