“The young mother is always worried her son.He is too young

The young mother is always worried about her son。He is too young to go to school alone。这位年轻的妈妈总是担心她的儿子。他（指年轻妈妈的儿子）年龄太小了不能独自上学。也就是说他年纪太小了不适合自己一个人上学。