问题描述： There is no proof that he killed him.可以把that改为wether吗? 1个回答 分类：英语 2014-10-01 问题解答： 我来补答 不可以的.因为已经是 no proof 了,是确定的,就不能用whether.whether 可以用在 I wonder whether there is any proof that killed him or not. 展开全文阅读
