which man is our English teacher?
对OVER THERE 提问要看情况的,如果是对地点提问当然用"WHERE",但是此句的意思为"在那的那个男人是我们的英语老师",主语是"THE MAN","OVER THRER是用来修饰"THE MAN"的,因此提问应是"哪个人是我们的英语老师",故用"WHICH"