My friend is nine years old变一般疑问句,特殊疑问句和否定句,划线niMy friend is nine years old变一般疑问句,特殊疑问句和否定句,划线nine years old

问题描述:

My friend is nine years old变一般疑问句,特殊疑问句和否定句,划线ni
My friend is nine years old变一般疑问句,特殊疑问句和否定句,划线nine years old

Is your friend nine years old?;How old is your friend?;My friend is not nine years old.