| + + |
1. 100 elements are supposed to exist on the earth.
, 100 .
2. Electronic equipment is known to be in great demand.
, .
3. The development of project appears to be improving.
, .
:
) :
| This value | is said | , |
| is supposed | ||
| is expected | ||
| is assumed | ||
| is reported | ||
| is considered | ||
| is proved | ||
| is found |
b) :
| This value | seems | - |
| happens | ||
| appears | -.. | |
| proves | .. | |
| is sure | ||
| is certain | ||
| is likely | ||
| is unlikely |
I. , .
I
1. Light proves to travel in straight lines. 2. Light in tensity happens to be measurable. This property seems to refer to a restricted number of materials. 4. The property appears to have been mentioned frequently in the past. 5. They are likely to be familiar with this phenomenon. 6. This phenomenon does not appear to have been studied. 7. This reaction was not expected to start at lower temperatures.
II
1. Electronics equipment have been proved to save millions of man machine hours. 2. Electronics devices are known to control the stream of electrons. 3. Experiments with special constructions of semiconductor diodes are reported to have been carried out. 4.This equipment has been proved to do jobs better and more economically than other devices. 5.Vacuum tubes are considered to be indispensable in industrial control. 6. The word magnet comes from the name of the province of Magnesia in Asia, where the mineral seems to have been discovered.
II. .
I
1. We use a thermometer to measure temperature. 2. The only way of getting knowledge is to learn. 3. To study geometry means to train logical thinking. 4. We want this method to be applied at their plant. 5. This method is reported to have been applied at their plant. 6. Lasers are known to have found an application in the printing industry. 7. This type of engine is said to have some advantages. 8. Science is known to have become the main source of the worlds progress. 9. Plastics are material to be widely used in industry. 10.The problem was to make a new plan.
II
1. He is known to have been working on this problem for many years. 2. The law to determine the ratio of stress to strain for elastic bodies is called Hookes law. 3. The energy to be produced by our atomic power stations will be millions kilowatts. 4. The problem to be discussed is connected with the laws of thermodynamics. 5. Cosmic rays have been found to belong to two energy groups, one much more penetrating than the other. 6. The fundamental functions of vacuum tubes are likely to be the cause of their numerous applications. 7. The future is expected to bring a great many uses for semiconductors. 8. The heat to melt the metal cannot be supplied instantaneously by the flame. 9. It is necessary for the two metals to have the same structure.
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| Active | Passive | |
| Indefinite | reading | being read |
| Perfect | Having read | having been read |
( )
in,on,upon,before,after
by,without
+
I. :
being produced, producing, having been produced, having produced; building, having built, being built, having been built; developing, being developed, having developed, having been developed.
II. :
: to ask - asking, being asked, having asked, having been asked.
to do, to leave, to move, to add, to apply.
III. :
)
Maintaining constant temperature and pressure during the test was absolutely necessary. Reading is useful.
b)
The task of the factory was producing corrosion-resistant polymers in far larger quantities. Their aim is finding new ways of utilizing this first-class polymer in light industry.
)
The experimenter suggested purifying the solution by a new method. The researcher took part in improving the properties of the rubber-like substances.
d)
At present scientists take great interest in the methods of turning the light and heat of the sun directly into electricity. A thermometer is an instrument for measuring temperature.
)
By subjecting air to very great pressure and cooling it is possible to transform it to the liquid state. One cannot transform water into steam without heating it. Millions of young men and women join the reserve labour army on leaving school without having worked even a single day. Instead of finishing experiment you should write down the properties of the substances. After presenting the report at the conference the professor began answering the questions. Before increasing the prices the government should take care of the poorest people.
IV. :
I
1. Strengthening metals means reinforcing them with artificial fibres. 2. Our professor likes inviting specialists to take part in his researches. 3. He avoids being invited to take pert in their own researches. 4. Metallurgists are developing new processes by producing metals and alloys that meet the present-day requirements. 5. These pieces of metal cant be used in the process without being hammered into thin sheets. 6. The young scientists began experimenting.
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II
1. Heating the increases the speed of the molecules. 2. Without improving the properties of this alloy we cant use it in the production process. 3. After having improved the properties of this alloy we could use it in the production process. 4. They began erecting this building two months ago. 5. Greeks knew the art of building with cut stones. 6. Visiting the USA colleges made impression on our dean.
| + | |
, : ; , ; , ; , .
1. We all know of their designing a new type of semiconductor radio set.
, .
2. They read of Yablochkovs having found a brilliant solution to the problem of using the electric arc for lighting.
, .
3. Comrade Smirnovs taking part in the development of new cooling system was of great help to us.
, , .
V. , .
1. We know of Newtons having spent more than 20 years of scientific thinking before finaly formulating them on paper. 2. The motion of this body was changed because of its having been acted upon by an external force. 3. Many scientific discoveries proceeded Newtons stating his laws of motion. 4. Newtons having stated his laws of motion is very important for modern science. 5. By studying Newtons laws of motion we learn that they are applied in our daily life as well. 6. Principias having been written in such a short time was due to its authors great previous work. 7. The Principias having been published brought Newton world fame. 8. We knew nothing of this device being broken.
VI. , .
I
1. The worlds first nuclear power station in Obninsk began generating electricity in 1954. 2. In fact converting kinds of fuels into electricity is not economic enough. 3. The idea of utilizing the energy of oceans is not new, but tidal stations are still few. 4. Recently scientists have succeeded in creating new kinds of generators for converting heat directly into light. 5. This machine-tool is capable of running at very high-speeds. 6. They began building houses of stones.
II
1. The students completing the experiment on time was very important. 2. Our aim is improving the results. 3. Electrons escaping begin when the cathode is heated to a high temperature. 4. They have stopped discussing the problem. 5. I remember having been the problem yet. 7. A barometer is an instrument for measuring atmospheric pressure. 8.People began studying higher mathematics in the 17th century. 9. The teacher insisted on our carrying out that experiment in the laboratory.
III
1. Students dont like being asked. 2. Do you like listening to anybody or being listened to? 3. He relied on his paper being discussed tomorrow. 4. He insisted on his device having been tested.
, -ing .
| ( ) | ( ) |
| Testing the motor was necessary.- . | Testing the motor, he saw- , |
VII. , .
1. Measuring the temperature we used these new thermometers. 2. Measuring the temperature will help us to determine the difference of the properties of these materials. 3.Escaping from the cathode, the electrons flow in space. 4. Escaping electrons will not begin till we heat the cathode. 5. Using a strong magnet we direct the particles to the necessary point. 6. Using a magnet is not necessary here. 7. Solving this problem he discovered a very interesting phenomenon. 8. Solving such problem helps us greatly.
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VIII. . . :
1) ;
2)
3) .
1. A thorough mastering of a foreign language will assist you in many branches of work. 2. The designing of that building met all the necessary requirements. 3. The launchings of artificial moon satellites will make it possible to solve a number of problems in the field of space exploration. 4. The studying of higher mathematics starts with the so-called real consideration. 5. The launching of artificial satellites of the earth has been a great achievement of world science.
I, II
| I | II | |
| Non Perfect | increasing | increased |
| Perfect | having increased | |
| Non Perfect | Being increased | |
| Perfect | having been increased |
The boiling water changes into steam.- .
They are applying these methods.- .
Being a good conductor of electricity copper is used in electrical devices.- , .
The problem so explained was easily understood.- , , .
When cooled oxygen liquefies.- , .
:
| , -, -, -, | , |
I. :
having been made, being made, having made, making,;
being lost, having been caught, finding, doing, being broken, built, cut, prepared, having been prepared.
II. :
(. ) to choose, to cut, to know, to finish, to help.
III. I . , , -, -, -, -.
I
1. People beginning to study languages often say that it is difficult to memorize words. 2.The boiling water changes into steam. 3. The water boiling in the vessel changes into steam. 4. We need devices improving the accuracy of measurements. 5. A molecule is a compound consisting of two or more atoms. 6. The boiling solution has neither colour nor odour. 7. The ocean surrounding this land gave birth to wonderful flora and fauna. 8. The engineers constructing the natural gas pipeline came across many difficulties.
. , I .
II
1. The plant being built in our district will produce radio sets. 2. The natural gas pipeline being constructed lately by all European countries is one of the most important projects. 3. The man being sent into outer space is a highly qualified and experienced pilot. 4. The tools being tested once more showed accurate characteristics. 5.The tests being performed by our researches are very important. 6. Depending on the method being used for solving this problem, there exist several types of energy converters. 7. The speed of sound is affected by temperature, being increased in air by about 11 feet per sound for every degree rise in temperature on the Fahrenheit scale.
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IV. I . , I , . I , ; -.
1. Being very light, strong and noncorrosive, aluminum is an ideal construction metal. 2. Having released the energy in the form of radiation, man learned to use it for detecting various defects in metals. 3. When heating a magnet we lessen its magnetism. 4. While analyzing the quality of the alloy the engineer showed its negative properties. 5. Being offered no post in Russia, Kovalevskaya went abroad. 6. Having been insulated the wire may be used as conductor. 7. Being cooled in the air the metal hardened. 8. The metal cooled in the air, having been heated to a definite temperature in the furnace. 9. Having finished the test he put down the results.
V. I. .
1. The assistant preparing the solution does it very carefully. 2. The main thing manufactured in Britain up to the 17th century was woolen cloth. 3. The engineer delivering a report gave many interesting examples. 4. The house being built in this street will be our new hotel. 5. The metal being used in that experiment was titanium. 6. The performing this task is working successfully. 7. The electromagnetic theory being discussed by the scientists describes light as sound waves.
VI. I .
1. They were making this experiment from 11 to 3 p.m. 2. The pace of outer space research is growing rapidly. 3. Scientists are successfully developing quantum generators called lasers. 4. The students were being asked many questions. 5. Large centers are being set up for research in physics of elementary particles. 6. This apparatus is receiving telegrams. 7. Who is running this factory?
VII. I . .
I
1. The student was asking an interesting question when the dean of our faculty came in. 2. The films being shown are of American production. 3. Having been typed the report was handed to the engineer. 4. The house being built in our street will soon be ready. 5. Having typed the report, the typist asked the engineer to see if there were any mistakes. 6. The man producing these parts is our best worker. 7. While delivering the lecture a famous scientist stressed some points in it. 8. Having used the appliance improved by a group of workers of our shop, we mechanized a number of operations. 9. When producing these articles the shop acquired a good reputation. 10. Having been produced these parts were sent to various factories. 11. While moving in space any object does work. 12. The flight of any object moving through the air depends upon the laws of aerodynamics.
II
II .
1. You have to repair the broken parts of that engine. 2. The part broken by you should be repaired at once. 3. We shall use instruments of improved design. 4. The method of work improved by this young worker will increase the output of our plant. 5. The plans proposed did not meet the requirements of our plant. 6. The method used depended upon the material selected. 7. In England the weight of luggage allowed varies with different railways. 8. The techniques applied must be discussed once more. 9. The results obtained are very good. 10. The substance heated changed its properties. 11. The results of the experiment achieved in the lab must be checked once more. 12.The data supplied by the Cosmos sputniks have enabled us to solve many technological problems.
VIII. II :
) ;
)
I
1. When asked, the worker answered that he knew the subject very well. 2. Unless discussed, this new method must be used. 3. Ice melts when heated. 4. The instructions became perfectly understood, if translated. 5. If frozen, water becomes ice. 6. Subjected to high temperature, aluminium loses its strength rapidly. 7. Cooled the solution will be ready. 8. When mounted, the new device will help to mechanize a number of operations.
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II
1. The lecture in physics was followed by a film. 2. The film has been followed by the lecture. 3. In this shop closed at 7 a.m.? 4. This laboratory work has been done successfully. 5. The plan was fulfilled in advance. 6. Transfer machines are considered to be the backbone of automation. 7. A metal is a bright solid that can be forged as has been formulated by M. Lomonosov. 8. We have provided our plants with various safety devices.
IX. II . , :
when, while, unless, if, where, unless, though.
When hot the body emits infra-red radiation. , .
1. While translating the article I did not use the dictionary. 2. Unless wet wood burns well. 3. While in prison and exile V. Kuibyshev studied philosophy, the German language. 4. If applied in construction plastics offer advantages over other materials. 5. Though built the atomic power station required another thorough investigation of its technological parameters. 6. Ice melts if (it is) heated.
X. . , -ed, , , .
I
1. When dissolved in cold water, the acids reacts very slowly. 2. The principal materials affected by magnetism are iron and steel. 3. The increased concentration of the ions of the water increases the effects caused by these ions. 4. Many of the metallic products, used extensively, are not single metals but alloys. 5. The energy lost by the hot water is equal to the energy transferred to the cold water.
II
1. When heated water changes into an invisible gas. 2. When evaporated water forms clouds. 3. Physical properties of water are used to define many physical constants and units. 4. Ice placed in a kettle over a fire expanded a little and melted. 5. Everybody knows that the Sun is the source of all energy stored in fuels.
XI.
1. Being asked to put down his ideas on paper, Newton did it in a very short period of time. 2. An external force applied to a body sets it in motion. 3. Having been published in 1687 the three laws of motion are still the basis for many scientific achievements. 4. Any applied force sets the body in motion. 5. It is known that some early satellites were burned up in flight having been set on wrong orbits. 6. The validity of the new theory is proved by the examples given below.
