This sentence is a command, it has no subject and it cannot be changed to a passive sentence.
let the door be shut
The door was being knocked at by some body.
Yes, "is addressed" is in the passive voice.
Can it be changed into passive voice?
"They were surprised by a knock at the door." is passive voice.
To change a sentence into passive the sentence must be active. 'Shut the door please' is not an active sentence, it is an imperative sentence, it has no subject. You could write something like this - You are asked to shut the door - but this is a bit awkward.
This sentence is a command, it has no subject and it cannot be changed to a passive sentence.
let the door be shut
The active voice sentence "Who is knocking at the door?" can be changed to passive voice as "By whom is the door being knocked?" In the passive voice sentence, the subject of the active voice sentence ("who") becomes the object of the preposition "by," and the verb "knocking" is changed to "being knocked," with the helping verb "is" moved to the appropriate position.
The door was being knocked at by some body.
This
language you use when you are writing or talking. no it is passive
The passive voice of ''what do you do'' is "what is done by you?"
"Your name is not known by me." is passive voice.
Passive voice
Yes, "is addressed" is in the passive voice.