III. Compare the functions and the meanings of the words in bold. Give the Russian equivalents of the sentences.

1. а) On that day the radiotelegraphy was converted from abstract theoretical problem into a real fact. b) Computers are devices that are capable of very rapid and accurate calculations.

2. a) Those transceivers relay information to each other via radio signals. b) The first solar battery operated with semiconductor crystals similar to those used in transistors.

3. a) We know that light waves pass through glass more easily than heat waves. b) The antenna for the receiver is constructed in the same manner as that for the transmitter.

4. a) Since that time Maxwell wrote a great number of works which were the results of his experiments and calculations. b) The atoms and molecules that make up all forms of matter are constant thermal motion.

IV. Give the Russian equivalents of the following sentences.

1. These devices are more reliable than those designed in our laboratory. 2. A wide area network (WAN) is a network that connects computers over a large geographical area. 3. The robots became so intelligent that they revolted. 4. Natural rubber is of higher quality than that produced artificially. 5. These factors taken together ensure high production efficiency. 6. This scientific discovery was the result of six years research. 7. Current research in information processing deals with programs that enable a computer to understand written or spoken information. 8.  Organizations that have large amounts of printed information are working to transfer their information into databases.

Признаки распознавания функций и значений after

1 подчинительный coюз after + придаточное предложение (C+CК) = после того, как After the new device had been tested it was installed in our laboratory. I found the message after he had left.

2 предлог after + существительное /местоимение/ герундий = после They left the laboratory after finishing the experiment.

3 наречие after . (конец предложения) = потом, затем In 1948 Bardeen and Brattain invented the point-contact transistor and Shockley invented the junction transistor shortly after.

V. Define the functions and meanings of the multifunctional word after. Name its features as a subordinating conjunction. Model these sentences.

1. After the x the x xed in the x for a x.

2. After the x x did the x the x xed the x in the x.

3. The x xed the x after the x had done the x of x.

4. The x x did the x after seven.

VI. Define the functions and meanings of the multifunctional word after. Name its features as a subordinating conjunction of the complex sentence.

1. A year after the failure of the experiment they were ready to repeat it. 2. After the positive charge reached a certain value, placing a greater positive charge on the plate had no further effect. 3. After another stage of amplification the current is strong enough to operate the powerful loud speaker. 4. Users can access and search the information using the Web, either for free or after paying a fee. 5. In 1968 Niklaus Wirth, a professor in Zürich, Switzerland, created Pascal, which he named after 17th-century French philosopher and mathematician Blaise Pascal. 6. But after the programs are completed, they are stored on relatively inexpensive media such as CD-ROMs that can be easily copied. 7. Release the product for use or for sale after it has passed all its tests and has been verified to meet all its requirements.