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.

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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.

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 指她的行为证明了某件事的真假.此时prove作主动,应该不难理解.

基本上大部分动词都可以既做主动,又做被动。
做主动时表示 ···被证明了
做主动时表示····证明了···

prove表证明、证实,一般都是用主动,prove sth to sb, prove to be, sth/sb prove that···,但要注意用到it作形式主语时,it is proved that···是固用句型,表“结果是···证明是···”