All that should be done has already been done.是什么从句,

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Allthatshouldbedonehasalreadybeendone.是什么从句,Allthatshouldbedonehasalreadybeendone.是什么从句,Allthatshoul

All that should be done has already been done.是什么从句,
All that should be done has already been done.是什么从句,

All that should be done has already been done.是什么从句,
您好,这是一个复合句,包括主句和从句(that should be done 为定语从句),整个复合句的主语为all (所有的事).
2)all that =what
改成what 时是主语从句.

主语从句,all是先行词,that引导后面的should be done修饰前面的all构成主语从句,has already been done是谓语。