Lily’s and Linda’s fathers are doctors.
为什么father加s呢,and连接两个并列成分,所以Lily’s和Linda’s都是接father,应该是Lily’s father and Linda’s father,所以这里的fathers应该用单数father啊,不然就变成了Lily’s fathers and Linda’s fathers了,因为并列成分都是修饰father啊。
Lily’s and Linda’s fathers = Lily’s father and Linda’s father