Question

这里的should have been done是否为虚拟语气？谢谢

全句为：Without elaborating, she admitted that medical care for the terminally-ill had declined since the law came into effect. She said more should have been done legally to protect people who wanted to die natural deaths.
是否表示“应该已经被做了而没有被做“，谢谢🙏

Answer 1

Without elaborating, she admitted that medical care for the terminally-ill had declined since the law came into effect. She said more should have been done legally to protect people who wanted to die natural deaths.
她说，在法律上应该做更多的工作来保护那些希望自然死亡的人。
should have done本该做，而又没做（情态动词的一种用法）
You should have come earlier.你本该早来的。

Answer 2

没错，就是虚拟语态，意思是，早就该采取更多法措施从法律上保护要求自然死亡的人。

Answer 3

是完成时的虚拟语气，表示过去应该做更多。

Answer 4

还没有被做，应该被做，是与目前情况所相反的一种愿望

Answer 5

ShouId have been done是虚拟语气可译为：本应该做