have been done 和 to be done

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have been done 和 to be done
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have been done 和 to be done
have been done 和 to be done

have been done 和 to be done
have been done 是现在完成时的被动语态 to be done 只表被动

have been done 是完成式 译为 已经被完成 to be done 是动词不定式 可译为 要被完成 (但它还没被完成)