My father is 40 years old.
问题描述：
My father is 40 years old.
My father is 40 years old.
.
虚线是横线
改为特殊问句
答
how old is your father~how是特殊疑问词。所以只能这样问
My father is 40 years old.
My father is 40 years old.
.
虚线是横线
改为特殊问句
how old is your father~how是特殊疑问词。所以只能这样问