Read and translate - раздел Образование, ВРЕМЕНА ГРУППЫ INDEFINITE ACTIVE
Better Metals Are Vital To Technological Progress
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BETTER METALS ARE VITAL TO TECHNOLOGICAL PROGRESS
Since the earliest days the preparation of metals for mechanical use was vital to the advance of civilization.
Gold, silver and copper were the first to be used by a primitive man, as they were found free in nature. Today we know more than sixty-five metals available in large enough quantities to be used in industry.
Metals are mostly solids at ordinary temperatures and possess comparatively high melting points with the exception of mercury. They are for the most part1 good conductors of heat and electricity, and silver is the best in this respect2 They can be drawn into fine wires and hammered into thin sheets.
As to3 their chemical properties the first point to be mentioned is that they vary widely in degree of chemical activity: some are enormously active and others are inert. The Earth contains a large number of metals useful to man. Of all metals to be utilized in industry iron remains by far4 the most important. Modem industry needs considerable quantities of this metal either hi the form of iron or steel.
To get the desirable characteristics in metals or to improve them the art to mix metals and other substances began to develop. The first alloys that were formed in this way were sometimes stronger, tougher, harder and more elastic than the metals of which they were composed. To estimate nowadays how many alloys there exist in the modem world is difficult because their numbers increase daily.
To serve special uses modem metals and alloys must be lighter yet stronger, more corrosion-resistant, more suitable for automated fabrication yet less expensive than those available before.
Scientists are developing new processes and improving old ones in order to produce metals and alloys that will meet the present-day requirements. One of the most interesting purposes is, for instance5 to make metals stronger, in other words, to strengthen them by reinforcing them with fibres.
Today transportation, communication, farming, construction and manufacturing all depend on the availability of suitable metals and alloys.
Notes on the Text
1. for the most part — большей частью
2. in this respect — в этом отношении
3. as to — что касается
4. by far — несомненно
5. for instance — например
1. Answer the questions:
1. Since what time was the preparation of metals vital to the advance of civilization?
2. What metals did a primitive man use?
3. Why did he use gold, silver and copper?
4. How many metals do we know today?
5. Do metals have low or high melting points?
6. Are they good conductors of heat and electricity?
7. Which metal is the best conductor?
8. Does the Earth contain a large number of metals?
9. What is the most important metal?
10. How are alloys formed?
11. What properties do they possess?
12. How are metals strengthened now?
13. What depends on the availability of suitable metals and alloys?
Все темы данного раздела:
Past Indefinite
Стандартные глаголы образуют формы в Past Indefinit путем прибавления к инфинитиву ( без частицы to ) суффикса –ed (d) для всех лиц единственного и множественного числа. Например:
To ask –
Write sentences from these words. Put the verb in the right form
(arrive or arrives etc.).
1 (always / early / Sue / arrive) Sue always arrives early.
2 (basketball / I / play / often) I..............................................
Put the verb in the correct form - positive, negative or question.
1 We went to the cinema but the film wasn't very good. We didn't enjoy it. (enjoy)
2 Tim.......................................some new clothes yesterday - two shirt
Learn the vocabulary.
Invention – изобретение
Vacuum tube – вакуумная трубка, электронная лампа
Device – прибор, устройство
Record player – проигрыватель
Power – мощно
Electronics in the home
Electronics began at the start of the twentieth century with the invention of the vacuum tube. The first devices for everyday use were radios, followed by televisions, record players, and tape reco
Translate the definitions.
Anodeis an electrode for the collection of electrons.
Cathode (in electron tubes) is the electrode from which emission takes place.
Diode
Translate
1. while operating; 2. while charging; 3. while forming; 4. while producing; 5. while creating; 6. while insulating; 7. while adding; 8. while increasing; 9. while decreasing
Learn the
Lesson 2
ВРЕМЕНА ГРУППЫ CONTINUOUS ACTIVE and PASSIVE
Глаголы в формах Continuous употребляются, когда требуется подчеркнуть, что действие продолжается, продолжалось или будет продолжаться в то вр
Write questions from these words. Use is or are and put the words in order.
1 (working / Paul / today?) Is Paul working today?
2 (what / doing / the children?) What are the children doing?
3 (you / listening / to me?)........
Put the verb into the past continuous or past simple.
1 A: What were you doing (you/do) when the phone rang (ring)?
B: I was watching (watch) television.
2 A: Was Jane busy when you went to see he
Words to Be Learnt
available a — имеющийся
considerable a — значительный
copper n — медь
desirable a — нужный
difficult a — трудный
either... or …—либо..., либо
e
PYROELECTRIC SENSOR CONSTRUCTION
Pyroelectric infra-red sensors consist of a ceramic element, an alumina substrate and a circuit with field effect transistor (FET) and strong resistance, a window material.
To attain excel
ФУНКЦИИ И ПЕРЕВОД СЛОВА ONE (ONES)
One, стоящее перед личной формой глагола, является формальным подлежащим и указывает на то, что данное предложение является неопределенно-личным. В этом случае на русский язык one не переводится, а
Усилительное (для выделения отдельных членов предложения).
It is Popov who indented the radio. - Радио изобрел не кто иной, как Попов.
Exercises:
1. Put in it is (it's) or is it.
Complete the sentences. Choose from the boxes.
It’s
easy
dangerous
nice
impossible
interesting
difficult
to
work in t
Classifying Materials
There are many ways of classifying materials. The one we shall use here is based on the ability of a material to conduct electricity. It is known that conduction takes place as a re
The Simplest Atom
The simplest atom is that of the element hydrogen and it consists merely of a single proton in a nucleus and a single electron in orbit around it. The helium atom is the next simple
ВРЕМЕНА ГРУППЫ PERFECT ACTIVE И PASSIVE
Глаголы в формах Perfect указывают, что действие закончено или закончится к определенному моменту времени в настоящем, прошедшем или будущем.
Глаголы в формах Perfect обычн
The Future Perfect Continuous Tense
shall + have been + Participle I
will
Future Perfect Continuous выражает длительное будущее действие, которое начнется ранее другого будущего действия или момента и будет еще сов
Read the situations and complete the sentences.
1 The rain started two hours ago. It's still raining now. It ...has been raining... for two hours.
2 We started waiting for the bus 20 minutes ago. We're still waiting now.
We....
Read the situations and make sentences from the words in brackets.
1 I was very tired when I arrived home.
(I / work / hard all day) I had been working hard all day.
2 The two boys came into the house. They had a football and they were both very
Put the verb into the correct form, will be (do)ing or will have (done).
1 Don't phone me between 7 and 8. ...We'll be haying... (we/have) dinner then.
2 Phone me after 8 o'clock........................................(we/finish) dinner by then.
3 Tomo
Complete the sentences with a verb from the list.
break buy decide forget go go invite see not/see take tell
1 Can I have this newspaper?' 'Yes, I've finished. with it.'
2 I........................................
Write questions with yet.
1 Your friend has got a new job. Perhaps she has started it. You ask her: Have you started your new job yet?
3 Your friend must write a letter
Put in gone or been.
1 Bill is on holiday at the moment. He's …gone..to Spain.
2 Where's Jill?' 'She's not here. I think she's.................................to the bank.'
3 Hello, Sue. Where have yo
MARIE CURIE AND THE DISCOVERY OF RADIUM
Marie Curie was born in Warsaw on 7 November, 1867. Her father was a teacher of science and mathematics in a school in the town, and from him little Maria Sklodowska — which was her
Modal Verbs (МОДАЛЬНЫЕ ГЛАГОЛЫ)
Глаголы can, may, must являются модальными глаголами; они не обозначают действия, а выражают отношение к нему, т. е. возможность, вероятность или необходимость совершения действия.
Модальные глаголы и их эквиваленты
Для образования отрицательной формы после модального глагола ставится отрицательная частица not.
Примечание: Отрицание not с глаголом сап пишется слитно: cannot.
Для образования
Модальные глаголы и их эквиваленты
Present Indefinite
Past Indefinite
Future Indefinite
COMPOUNDS AND ELEMENTS
All the substances which occur in nature consist of one or more basic elements; a substance containing more than one element is known as a compound. An element is a substance that can neither be de
Exercises
1. Переведите предложения на русский язык, обращая внимание на различные способы выражения долженствования:
1. In scientific work we must measure in units of the metri
Translate
1. Who can translate this sentence? 2. You can go to Leningrad by train or by airplane. 3. Could you speak English a year ago? 4. I hope they will be able to reach the village before it is dark. 5
Fill in the gaps
1. Nina is ill. She ... stay in bed. 2. Drivers ... stop when they see the red light. 3. Betty asked: "... I open the window?" 4. Betty asked her father: "... I go to the concert ton
Страдательный залог
to be + Participle II
Страдательный залог показывает, что подлежащее пассивно, т. е. оно подвергается воздействию со стороны другого лица или предмета.
Страдательн
Особенности перевода подлежащего.
Подлежащее английского предложения при сказуемом в страдательном залоге может переводиться на русский язык существительным (или местоимением) в именительном падеже и во всех косвенных падежах:
Correct these sentences.
1. {This house built} 100 years ago. …This house was built…
2. Football plays in most countries of the world. …………………………
3. Why did the letter send to the wrong address? ………………………
Read and translate
LONDON'S UNDERGROUND
Bands were playing and the gentlemen in hats were preparing to make speeches about their great achievement. They made the first underground railway tr
Future-in-the-Past (Будущее в прошедшем)
В русском языке мы употребляем будущее время глагола, не задумываясь о том, в каком времени ведется повествование в целом, употребляется ли будущее время в главном или придаточном предложении, и да
Revision Exercises
I. Оборот there + to be
1.There were several empty seats in the bus when I got into it. 2. There is a great number of goods that can be transported by air.
Существительные, имеющие разные значения в форме ед. и мн. числа
custom – обычай
damage – повреждение
pain – боль
people – люди
quarter – четверть
work – работа
customs – таможня
damages – убытки
pains – стара
Артикль (The Article)
Сравнительная таблица употребления артиклей с существительными в единственном числе
A, an (неопределенный)
The (определенный)
Имя прилагательное (The Adjective)
Прилагательные
Положительная степень
Сравнительная степень
Превосходная степень
Односложные и некоторые дву-
Местоимение (The Pronoun)
Ли-цо
Личные
Притяжательные
Возвратнно-усилитель-ные
Имени-тельный падеж
Объект-ный падеж
Глагол (The Verb)
Спряжение глагола to ask (действительный залог)
Время
Indefinite (факты, повторяющиеся действия)
Continuous (действия, происходящие в то
Предлоги, обозначающие время
In -
в, через
in May, in 1980, in summer
in two hours, in three days
Запомните:
in the morning — утром
in the afternoon — днем
in the eve
Суффиксы
Суффиксы
Словообразование
1. существительных
-ance (-ence)
-er (-or)
-ing
-t(ion)
-ism
-ist
-(i) ty
-ness
-ment
Приставки
Приставки
Словообразование
un-
in- (im-, il-, ir-) re-
dis-
mis-
necessary — unnecessary
correct — incorrect (pol
Названия некоторых стран, национальностей и языков
Страна
Национальность
Язык
Belgium
Бельгия
the Belgians бельгийцы
French фра
List of abbreviations
А.С. = (a.c.) = alternating current = переменный ток
a.f. = audio frequency = звуковая частота
A.F.C. = automatic frequency control = автоматическая подстройка час
Supplementary Reading
CONTROL SYSTEM
Computers have revolutionized manufacturing. They have given manufacturing engineers control over events in the factory. With this information, processes can
FROM DICTIONARIES OF ELECTRONICS
A TRIODE is an electron tube with three electrodes namely a cathode, control grid and anode. This was the first amplifying tube and was invented by Lee de Forest in 1905 when he pla
THE TWO SEMICONDUCTOR MATERIALS
The two semiconductor materials used in the manufacture of semiconductor devices, such as diodes and transistors, are germanium and silicon. Both these materials fall into group IV
SEMICONDUCTORS
Semiconductors are solids whose resistivity lies between those : of electrical conductors and insulators. Semiconductors are used in computers, in radio and TV receivers,
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