1. Answer the following questions:

1. Is radio a means of communication? 2. How is this communication carried out? 3. What do we call this kind of communication? 4. When were radio waves forecasted theoretically? 5. Arc radio waves similar to those of light? 6. What velocity do radio waves travel with? 7. What does the word «radio» mean? 8. Are the transmitting and receiving stations connected by any electrical wires? 9. What other names for «radio» do you know? 10. Is the word «radio» of French origin? 11. What does the word «radio» mean in Latin? 12. What is «radius»? 13. What energy does radio use? 14. What frequency does radio operate on? 15. Where is radio used? 16. What is electronics? 17. Are radio and electronics connected?

III. Define the meanings of the suffixes in the following words and translate these words:

radio - radiation - radioactive - radioactivity; theory - theoretical - theoretician - theoretically;

practice - practical - practically; to mean - meaning — meant — means — by means of — by no means - by all means — meaningful — meaningless;

to apply — application — applying — applied — applicable; wire --wireless.

IV. Give three basic forms of the verbs and translate them:

to be, to move, to apply, to liberate, to raise, to mean, to come, to add, to surround, to obtain, to make, to send, to have, to use.

V. Translate into Russian paying attention to Participle II:

1. The method applied by this scientist is of great interest for us.2. The applied method was described in the «Journal of Applied Physics». 3. He is often asked to make reports about his experiments. 4. The Information received was of importance. 5. She was asked to demonstrate this device to the students in the laboratory. 6. Radio devices will be used for various purposes. 7. Radio waves were forecasted theoretically. 8. The results received varied with the material used.

VI. Make the following sentences interrogative and give the answers:

1. Radio is used in many branches of life. 2. Radio and electronics are connected. 3. Different radio devices and radio equipment will be applied, for this purpose. 4. The first radio sending and receiving sets were called wireless sets.

VII. Ask special questions using the interrogative words in brackets:

1. Radio is a method of communication between distant points. (What?) 2. Radio waves were forecasted theoretically. (What waves? What?) 3. Wireless transmission was called radio because radio stations emanate waves like beams of light in all radial directions. (Why?) 4. Radio is widely used in all the spheres of life. (Where? What?)

VIII. Write the following sentences in the Passive Voice:

1. We shall apply radio devices for various purposes. 2. Radio uses an electrical energy to transmit sounds. 3. We called it radio.

Participle II (Причастие прошедшего времени страдательного залога) Written translated asked

Написанный переведенный спрошенный

Время	Утвердительна	Отрицательная	Вопросительная
Настоявшее время Present	He is asked to help them English is spoken in this country	He is not asked to help them. English is not spoken in this country.	Is he asked to help them? Is English spoken in this country?
Прошедшее время Past	He was sent there. They were sent there.	He was not sent there. They were not sent there.	Was he sent there? Were they sent there?
Будущее время Future	They will be met at the station.	They will not be met at the station.	Will they be met at the station?