His father is (forty-two ) years old .《用how old 就画线部分提问》

问题描述:

His father is (forty-two ) years old .《用how old 就画线部分提问》

How old is his father?

How old is his father?
方法:先变为一般疑问句:Is his father forty-two years old?
再把划线部分去掉
然后重新排序,把How old 提到最前面:How old is his father?

How old is his father

How old does his father ?