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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 pr

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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.
prove为什么有时是用主动 有时用被动 比如It has been proven that.her action pr
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.