The children are taken care by the teachers.我觉得of这个时候不应该用了。因为在原句中children是做of的宾语。而改变成被动语态后宾语提前做主语了。teachers做的是状语。也就是被动与态中没有了宾语。所以of的作用就没有了。因为of后面是要衔接宾语的。我是这样认为的。
你可以再问问你们的老师。我解释的对不对。如果不对也请回复我。
The children are taken care of by the teacher
The children are taken care of by the teachers.
the
children
were
taken
good
care
of
by
the
nurse.
还有什么被动句型的,可以直接百度hi我。