Yes,he does.He is a math teacher. 怎么问?
问题描述：
Yes,he does.He is a math teacher. 怎么问?
答
Is he a math teacher？
答
这两句是不能放在一起的,Yes,he does.这句答语跟He is a math teacher.没什么关系.在答语中有does,那在提问中也必须有does(即:用does提问,回答时才会用does。
答
is he a teacher?
答
Does he teach in the school?
答
Does he teach math（他教数学吗?）
答
Does he work as a math teacher?
回答用does，提问也应该用does。