Are the sentences correct?
1. Bill saw the girls swim in the pool.
--> The girls were seen to swim in the pool by Bill.
2. Bill saw the girls swimming in the pool.
--> The girls were seen swimming in the pool by Bill.
3. Sam saw the girl bitten by a snake.
--> The girl was seen bitten by a snake by Bill.
To me, the third passive voice sounds strange. But how about:
People saw the girl bitten by a snake.
--> The girl was seen bitten by a snake.
Does it work?
Thanks for your time!!