prove为什么有时是用主动 有时用被动 比如It has been proven that.her action proves that.
问题描述：
prove为什么有时是用主动 有时用被动 比如It has been proven that.her action proves that.
答
It has been proven that 指某件事被证明是客观真实的.例句：It's been proven that the answer is wrong.事实证明,答案是错误的.此处的It 是形式主语,指代that后面的东西.Her action proves that 指她的行为证明了...