We were being watched by no one. This is because nobody is the subject of the sentence in the active voice, and us is the object.
Answer:
In passive sentence constructions, the direct object (the objective or goal) is in the subject position. Active structure puts the actor in the subject position. To find the actor of a sentence, look for the action word – the verb – and figure out who did it. Sometimes, you may need to add an actor to the sentence
