这句话中的concerns 作什么词性,名词的话两个名词了,动词的话不应该是+ing吗?she was terminated because of concerns her behavior was not appropriate in the workplace.such as updates about each of their children's activities这句也是，update没有+ing而是加了s
问题描述：
这句话中的concerns 作什么词性,名词的话两个名词了,动词的话不应该是+ing吗?
she was terminated because of concerns her behavior was not appropriate in the workplace.
such as updates about each of their children's activities
这句也是，update没有+ing而是加了s
答
这里的concerns做名词,表示担忧,担心,后面的一句话是concern的内容,即担心什么,这个叫同位语从句（和定语从句差不多,但是意义不一样）.
这里的updates也是名词,名词加介词的搭配与原来的动词词组是一个意思.