YOU SAID:
The book was placed on the bookshelf, by me.
INTO JAPANESE
この本は私の本棚に置かれました。
BACK INTO ENGLISH
This book was placed on my bookshelf.
INTO JAPANESE
この本は私の本棚に置かれました。
BACK INTO ENGLISH
This book was placed on my bookshelf.
That didn't even make that much sense in English.