the child whose mother has left him is crying loudly.为什么不用who
问题描述：
the child whose mother has left him is crying loudly.为什么不用who
答
因为用whose引导定语从句,并且whose在从句中作定语,而who在从句中不能作定语,只能作主语或宾语,所以不能用who,这句话的意思是：他妈妈已经离开他的那个男孩正在大声哭.