Lưu ý: Khi chủ ngữ trong câu chủ động là "I, we, they, he, she" thì khi chuyển sang câu bị động có thể bỏ "by O"
1) The bookshop puts on monthly poetry-reading evenings.
⇒ Monthly poetry-reading evenings are put on by the bookshop
2) Fortunately, the lifeguard rescued the small boy, who was drowning.
⇒ Fortunately, the small boy, who was drowning, was rescued by the lifeguard
3, On the train yesterday, someone stole my ipod from my bag.
⇒ On the train yesterday, my ipod ứa stolen from my bag
4) People often tell me that you look like keira knightley.
⇒ I am often told that you look like keira knightley
5) The tour guide advised us to put on insect repellent before going into the forest.
⇒ We were advised to put on insect repellent before going into the forest by the tour guide