Passive voice

PASSIVE VOICE
FORM:	TO BE + PP
Simple present
S + V (s/es) + O => O + IS/ ARE/ AM + PP + (BY S)
E.g.: John delivers the newspapers every morning.
=> The newspapers are delivered by John every morning.
Present continuous
S + IS/ ARE/ AM + Ving + O => O + IS/ ARE/ AM + BEING + PP + (BY S)
E.g.: He is asking me a lot of questions. => I am being asked a lot of questions.
Present perfect
S + HAVE/ HAS + PP + O => O + HAVE/ HAS + BEEN + PP + (BY S)
E.g.: My mother has made that cake. => That cake has been made by my mother.
Simple past
S + Ved + O => O + WAS/ WERE + PP + (BY S)
E.g.: She wrote this letter. => This letter was written by her.
Past continuous
S + WAS/ WERE + Ving + O => O + WAS/ WERE + BEING + PP + (BY S)
E.g.: She was doing her homework at that time. => Her homework was being done at that time.
Past perfect
S + HAD + PP + O => O + HAD + BEEN + PP + (BY S)
E.g.: They had prepared a dinner before we came. => A dinner had been prepared before we came.
Simple future
S + WILL + Vinf + O => O + WILL + BE + PP + (BY S)
E.g.: The teacher will correct our exercises. => Our exercises will be corrected by the teacher.
Future perfect
S + WILL + HAVE + PP + O => O + WILL + HAVE + BEEN + PP + (BY S)
E.g.: In two years’ time he will have finished the painting.
=> In two years’ time the painting will have been finished.
S + TO BE GOING TO + Vinf + O => O + TO BE GOING TO BE + PP
Modal verbs with passive voice
S + Modal Verbs + Vinf + O => O + Modal Verbs + BE + PP + (BY S)
E.g.: She can answer this question. => This question can be answered.
Other forms
S + HAVE/ HAS + O (person) + Vinf + O (thing) => S + HAVE/ HAS + O (thing) + PP
E.g.: I had him repair my bike yesterday. => I had my bike repaired yesterday.
S + GET + O (person) + TO Vinf + O (thing) => S + GET + O (thing) + PP
E.g.: I get her to make some coffee. => I get some coffee made.
S + MAKE/ LET + O + Vinf => O + TO BE + MADE/ LET + TO Vinf
E.g.: My mother let me go out last night. => I was let to go out.
S1 + V1 + (THAT) + CLAUSE (S2 + V2 + O2)
=> IT TO BE + (V1) PP (THAT) + CLAUSE (S2 + V2 + O2)
=> S2 + TO BE + (V1) PP + TO Vinf (present)
	+ TO HAVE + PP (past)
E.g.: People say that he is a famous singer. 
=> It is said that he is a famous singer.
=> He is said to be a famous singer.
They thought that Mary had gone away.
=> Mary was thought to have gone away.
=> It was thought that Mary had gone away.
Exercise 1: Changes these following sentences into passive voice.
They can’t make tea with cold water.
Somebody has taken some of my books away.
They have to repair the engine of the car.
The teacher is going to tell a story.
Mary is cutting the cake with a sharp knife.
They have provided the victims with food and clothing.
Smoke filled with the room.
Will you invite her to your wedding party?
Is she making the cakes?
Has Tom finished the work?
Must we finish the test before ten?
Why didn’t they help him?
Where do people speak English?
We got Mary to type our paper.
The president had his advisors arrange a press conference.
The terrorists made the hostages lie down.
The teacher gave each of us two exercise books.
They said that the man was still living.
They know that English is an international language.
They reported that the troops were coming.
Exercise 2: Change into active voice
These exercises were done well by them.
This dress must be washed in cold water.
This house was built 100 years ago.
The lessons are being written by the students now.
These animals are fed twice a day.
When was this radio manufactured?
Apples are said to be good for our health.
The operation is going to be performed by French doctor.
What have been done to help the poor in this city?
Is English taught in this school?