past tense of deber

Question

for the last part of the notes, it says deber conjugated in indefinitivo does not mean the same thing. Am I right to say that this structure is only for present tense of saying something should have been done? how do we say such meaning in past tense? something should had been done?

Answer

Hola Ashlyn
For the meaning of "should have done something" we also use deber in the conditional + haber + past participle, with the same meaning than the structure explained in the lesson using deber in the indefinido + haber + past participle. We give the link to the other lesson at the end. Have a look here.
Saludos