Change the sentences into the passive voice. fred will book seats in advance. they left their coats in the cloakroom ten minutes ago. susan bought a programme yesterday.a wonderful curtain covers the stage. the orchestra will begin to play the overture in a minute. their repertoire includes both classics and modern plays. every season the company adds several new productions to its repertoire. we didn't use the opera-glasses at the theatre yesterday evening.

Seats will be booked by fred in advance.their coats were left in the cloakroom ten minutes ago.the programme was bought by susan yesterday.the stage is covered by a wonderful curtain.the overture will start to be played by t he orchestra in a mi­nute.both classics and modern plays are included in t heir repertoire.several new produc­tions are added to the company's repertoire every season.the opera-glasses were not used by us at the theatre yester­day evening.

The seats will be booked by fred in advande. their coats were left by them  in the cloakroom ten minutes ago.a  programme was bought by susan yesterday. the stage is covered with a  wonderful curtain. the overture will be begun to play by the orchestra in a munite.both classics and modern plays are included in their  repertoire.several new produc­tions are added every season by the company  to its repertoire.the  opera-glasses weren't used by us  at the theatre yester­ day evening.

1.if you heat ice, it will melt. - условное предложение 1-го типа,реальные,осуществимые условия, в придаточном предложении глагол ставится в present simple, а в главном предложении употребляется future simple.

2. a) if tim had a computer, he would use the internet. если маловероятно, что тим будет иметь комп.,то тогда это условное предложение 2-го типа, т.е. маловероятные или нереальные условия, относящиеся к настоящему или будущему времени. в придаточном предложении past simple, а в главном предложении should/would + indefinite infinitive (без to). 

b) if tim has a computer, he will use the internet. -  для вполне вероятного события,т.е. как только тим купит комп,он будет пользоваться интернетом, тогда это  условное предложение 1-го типа,реальные,осущесвимые условия, в придаточном предложении глагол ставится в present simple, а в главном предложении употребляется future simple.

3.if you do not put cream  in sun, you will get a sunburn. -  условное предложение 1-го типа,реальные,осущесвимые условия, в придаточном предложении глагол ставится в present simple, а в главном предложении употребляется future simple.

4. if i go to spain, i shall watch a flamenco perfomance. -  условное предложение 1-го типа,реальные,осущесвимые условия, в придаточном предложении глагол ставится в present simple, а в главном предложении употребляется future simple.

5. if you freeze water, it will become ice.-  условное предложение 1-го типа,реальные,осущесвимые условия, в придаточном предложении глагол ставится в present simple, а в главном предложении употребляется future simple.

6. if he had been younger, he would have exercised more. - условное предложение 3-го типа, нереализованные в прошлом, а поэтому совсем невыполнимые. в условных предл. past perfect, а в главном - should/would + perfect infinitive (без to).

7. if i were you, i should see a doctor immediately. -  это условное предложение 2-го типа, т.е. маловероятные или нереальные условия, относящиеся к настоящему или будущему времени. в придаточном предложении past simple, а в главном предложении should/would + indefinite infinitive. глагол to be в придаточном предложении употребляется в форме were со всеми лицами ед.и мн.числаю   

 

1. the house is protected by a marble pavillion.

2. the roof of the house will be painted by the boys.

3. the fence was whitewashed by tom sawyer.

4. she was given three beautiful dishes as a birthday present by her daughters.

5. nick was given a book for his birthday by tom.

6. we are told stories every evening by our mother.

7. you will be shown a new book of pictures by lydia.

8. she was showed the way by a boy.

9. we shall be sent a box of fruit by them.

10. they were followed by five or six small children.

11. in summer the horses are often driven to the fields by the boys.

12. the poles were led into the thickest part of the forest by ivan susanin.

13. the boat was carried away by waves.

14. the translation will be done by us in the evening.

15. the flowers are watered regularly by them.

16. i was promised these books long ago by you.

17. she was given a complete set of walter scott's works by bessie's father.

18. she was brought some beautiful shells from the south by irene's husband.

19. the newspaper reporters were given a long interview by the explorers.

20. you will be taught english by mr. wilson.

21.i was ordered a month's rest from studying by the doctor.