He believe that his answer is right.I believe that his answe

Does he believe that his answer is right?
Do you believe that his answer is right?
楼上说的I believe that his answer is right,isn't it?叫做反义疑问句
再问： think suppose beleve 等词开头的句子变一般疑问句时。是否与主句保持一致。不管从句