Вспомните образование страдательного залога

to be (в нужном времени) + 3-я форма глагола.

Exercise 4. Преобразуйте следующие предложения действительного залога в страдательный. For example: People widely use computers. - Computers are widely used by people.

1. This file keeps a lot of information. 2. He looks for the reliable data. 3. It processes the given results. 4. PC uses the keyboard. 5. The computer stored all the data. 6. The engineer adjusted a new program. 7. The device will execute a set of instructions 8. It'll perform a given task.

Exercise 5. Раскройте скобки и выберите глагол в требуемом залоге: действительном или страдательном.

1. Electronic devices_____ (use; are used) in scientific research.

2. Before the invention of the transistor its function______ (performed; was performed) by vacuum tubes.

3. The reliability of electronic systems ______ (connect; is connected) with the number of discrete components.

4. Semiconductor integrated circuits ______(helped; were helped) to increase reliability of devices.

5. New types of integrated circuits ____(have developed; have been developed) lately.

Exercise 6. Переведите предложения, содержащие Participle II.

1. The results obtained are of particular importance for our research.

2. When written in a symbolic language programs require the translation into the machine language.

3. Key-to-disk devices used as data recording stations can correct data before it will be stored on a magnetic disk.

4. A PC is a small computer based on a microprocessor.

5. The time required for the computer to locate and transfer data to and from the storage medium is called access time.

6. When properly programmed computers don't make computational errors.

7. As contrasted with the analyst, the computer system architect designs computers for many different applications.

8. Data recorded in the form of magnetized dots can be arranged in a certain way.

9. When keyed the data are held in a small memory called buffer.

10. Improved methods of obtaining three-dimensional television pictures have been worked on the basis of holography.

Exercise 7. Назовите три формы следующих неправильных глаголов.

To be; to have; to mean; to learn; to become; to bring; to know; to think; to but; to pay; to take; to do; to begin; to give; to make; to keep; to get; to read; to show.