[Grammar] SAng By or sung by, Got by or Gotten by

[nezmon]

I still confused in the structure of this sentence

If we want to say.. the song was sang/Verb 1 or sung/verb III by ......
it was threw or thrown by her

Please explain the correct structure of it

 

[oppo]

the song was sung by ...
It was thrown by her.

The passive voice is used in the two sentences. The passive voice is made up of "Be+Done+(by...)", namely the link verb "be" plus the past participle of a transitive verb.