为什么用动词原形?The order ____ the prisoner be set free arrived too

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为什么用动词原形?
The order ____ the prisoner be set free arrived too late.为什么填that?题中从句为什么用动词原形be?

that引导的是同位语从句.
从句是个完整的句子不缺成分.
原句其实是The order that the prison should be set free arrived too late.句中的should省略了,主句中有order suggestion 等表示建议的词,从句应用虚拟,即加should do ,should 可省略.

为什么用动词原形?The order ____ the prisoner be set free arrived too To forgive is to set a prisoner free and discover that the p I suggest that the game be cancelled.句中从句部分的be动词为什么用原形表示?用is 这里为什么直接用动词原形 be Set free the devil inside a set of keys 后面be动词用啥 A set of keys ( )(be) on the floor the police had to set him free in the ____ of evidence that 填be动词：the washing machine ______ out of order Fear can hold you prisoner ,hope can set you free! Fear can hold you prisoner ,hope can set you free. fear can hold you prisoner.hope can set you free . The man was set free ____evidence