I am trying to determine the tense of a certain verb group. This group uses a modal/auxiliary with "be" and the past tense of the action verb. Examples:

> 
> * He may be finished.
> * She must be loved.
> * It can be done.
> 
> 
> 

These can be modified by adding an adverbial preposition.

I can't find help on any tutorial websites, so far.

P.S.: I'm trying to determine if this is something like "present perfect" or "past continuous", etc.