"That's really kind of nice — for them to take care of all those kids like that, when they're so young and everything."
1.for是介词,那to take care是不定式做them的什么?for sb. to do sth.?这个结构是nice的同位语?
2.when they're so young and everything是定语从句修饰that,还是时间状语从句?因为宾语从句的连接副词也有when……