take care of 被动语态 中of 是否去掉我看到有的资料没有of 如果加了by短语呢？

被动语态中短语动词不能拆，故of 不能去掉

不能去掉，被动只改谓语动词形式
He is being taken good care of.
他正在被很好地照顾着
take care of 是固定短语，加by短语之后，也不能去掉of啊。
He takes care of the child.
The child is taken care of by him.
去了of成了take care，（注意，小心，保重等意思）

不能去掉,如
We should take care of the children.
The children should be taken care of.

不去