be concerned about 中的concerned是什么词性?形容词还是动词的过去分词?

be concerned about造句 be concerned about 中文 英语中concern 和 be concerned about 有什么区别? 英语中concern 和 be concerned about 有什么区别? 英语翻译用(be concerned about) 用be concerned about造句 用 be concerned about 造句 用户be concerned about 造句 be concerned about与be concerned with 区别如题 be concerned about的concerned是形容词吗?还是被动 关于be concerned abouthe is always concerned about.is always concerned about his family. 英语翻译必须用：be concerned about be concerned about concern aboutbe concerned about 和 concern about 的区别! be concered for be concerned about 不同在哪里为什么可以说concerned about his illness? concern about 和be concerned about意思相同吗 be concerned about和concern about的区别 类似be concerned about的be+ved+介词 sb concern sth sb be concerned with sth sb be concerned about sb