首先我们来看下be concerned with和be concerned about的大致意思：
be concerned with：词性为动词短语，表示对某事物或某人感到关切、担心、兴趣等，并进行相关的行动
be concerned about：词性为动词短语，表示对某事或某人感到焦虑、忧虑或关切，并可能采取相应的行动
通过下面的表格我们了解下be concerned with和be concerned about的含义、发音和用法
接下来让我们看下be concerned with和be concerned about的用法区别：
1.用法和含义：be concerned with强调对事物的关注和涉及，be concerned about强调对事情的担心和忧虑
例子：
- He has always been concerned with environmental protection issues.
(他一直关注着环境保护问题。)
- She is concerned about the safety of her child.
(她担心孩子的安全。)
2.语法结构：be concerned with后面接名词、短语或动名词，be concerned about后面接名词、代词、动词不定式或从句
例子：
- This project is concerned with a lot of technical issues.
(这个项目涉及到很多技术问题。)
- We are all concerned about your future.
(我们都很关心你的未来。)
3.语气和态度：be concerned with表示较为客观和正式的态度，be concerned about表示更加主观和个人的态度
例子：
- The government should be concerned with educational issues.
(政府应该关注教育问题。)
- Why are you so concerned about his decision?
(你为什么这么担心他的决定？)
4.使用场景：be concerned with常用于正式场合，如学术、专业等；be concerned about常用于日常口语和书面语中
例子：
- This research project is concerned with many complex issues.
(这个研究课题涉及到许多复杂的问题。)
- I am very concerned about your safety.
(我很担心你会受伤。)