12. вспомните образование страдательного залога — to be (в нужном времени) + 3-я форма глагола. а. найдите пять случаев употребления страдательного залога в тексте 1 и четыре случая — в тексте 2. переведи-те предложения. б. преобразуйте следующие предложения действительно¬го залога в страдательный по образцу: people widely use electronic devices-electronic devices are widely used by people. 1. electronic devices control the work of power stations. 2. they calculate the trajectories of spaceships. 3. people dis¬cover new phenomena of nature due to electronic devices. 4. scientists designed a variety of tubes for specialized functions. 5. american scientists invented the transistor in 1948. 6. inte¬ grated circuits greatly reduced the size of devices. 7. new types of integrated circuits increased packing density. 8. electronics has extended man's intellectual power. 9. scientists are looking for new ways for the improvement of integrated circuits tech¬ nology. 10. jack kilby developed the concept of integrating de¬ vice and built the first 1с in 1958.
1. The work of power stations is controled by electronic devices.
2. The trajectories of spaceships are calculated by them.
3. New phenomena of nature are discovered by people due to electronic devices.
4. A variety of tubes for specialized functions were designed by scientists.
5. The transistor was invented by American scientists in 1948.
6. The size of devices was greatly reduced due to integrated circuits.
7. Packing density was increased due to new types of integrated circuits.
8. Man's intellectual power has been extended due to electronics.
9. New ways for the improvement of integrated circuits technology are being looked for by scientists.
10. The concept of integrating device was developed by Jack Kilby and the first IС was built in 1958.