这是be型虚拟语气;如
:____,I'll marry him all the same.A.Was he rich or poor B.Whether rich or poor C.Werehe rich or poor D.Be he rich or poor (2004年第42题)的参考答案为D
be 放在句首做让步状语,这里做插入语.
又如:Be he friend or foe,the law regards him as a crirninal.不管他是朋友还是敌人,法律把他看作是一个罪犯.