passive voice

[Nicholas]

Is it right to say:
"She was loved by John."
"The sound was heard by one boy."

[Rusty]

Is it right to say:
"She was loved by John."
"The sound was heard by one boy."

These sentences are in the passive voice and are correct. You will find the passive voice in books and formal writing, but the active voice is much more common in speech: John loved her. One boy heard the sound.