* cách chuyển đổi sang câu bị động:
S1 + V + O
⇒ S2 + tobe + PII
1 - This dish is brought to me by the waiter
(S + V/Vs,es + O ⇒ S + is/am/are + PII)
2 - These postcards are sent to us by our friends
(S + V/Vs,es + O ⇒ S + is/am/are + PII)
3 - They were told this story by their grandmother when they visited her last week
(S + Ved + O ⇒ S + was/were + PII)
4 - This train ticket was ordered to Tim's mother
(S + Ved + O ⇒ S + was/were + PII)
5 - Her ticket was showed to the airline agent by her
(S + Ved + O ⇒ S + was/were + PII)
6 - This cake was baked by Jim yesterday
(S + Ved + O ⇒ S + was/were + PII)
8 - The customer was handed these boxes by the shop assistant
(S + Ved + O ⇒ S + was/were + PII)
9 - The first prize was awarded to the reporter (by the board)
(S + Ved + O ⇒ S + was/were + PII)
11 - Alia was appointed secretary for the meeting
(S + Ved + O ⇒ S + was/were + PII)
12 - Anna will be given a ride to school by Tom tomorrow
(S + will + V-infi + O ⇒ S + will + be + PII)
13 - This room is kept tidy all the time
(S + V/Vs,es + O ⇒ S + is/am/are + PII)
14 - Ann was given some bananas and some flowers
(S + Ved + O ⇒ S + was/were + PII)
15 - The fridge was moved into the living room
(S + Ved + O ⇒ S + was/were + PII)