child 的復(fù)數(shù)是 children
它們的所有格名詞是 child's 和 children's
例：
one child, two children
the child's mother has come to pick him up from school
the children's toys are strewn about in the playgound
另外, 單詞 Childs 是人名, 比如
Jonathan Childs is our math teacher.