5. Назовите номера предложений, в которых сказуемое в Passive Voice. Сравните их перевод с остальными

1) Metals are very important in our life.

2) About two thirds of elements found in the earth are metals.

3) Most elements are found in the earth.

4) Metals consisting of iron and some other elements are called ferrous metals.

5) The most important non-ferrous metals are copper, aluminium, lead and others.

6) They are used much less than ferrous metals.

7) Ferrous metals are much cheaper than non-ferrous metals.

8) Different metals are produced in different ways.

6. Назовите номера предложений, в которых есть Participle в качестве определения. Переведите их

1) Alloys consist of a simple metal combined with some other elements.

2) People combined a simple metal with some other elements to get an alloy.

3) Only aluminium may be used in the form of a simple metal.

4) Of all 100 % metals produced by the world's metallurgical industry during one year the production of ferrous metals is about 94 % (per cent).

5) Metals called ferrous contain iron.

6) People used metals after wood and stone.

7) The plant produced engineering metals for industry.

7. Прочтите текст e еще раз, постарайтесь ответить на вопросы, не заглядывая в текст

1) When did people begin to use metals?

2) Why are metals the most important engineering materials?

3) What three most useful engineering properties do metals combine?

4) What was the first metal produced by people?

5) How will you call metals which are used in industry?

6) What is the most important engineering metal?

7) In what form are engineering metals most often used in industry?

8) What metal is largely used in the form of a simple metal?

Самостоятельная работа студентов

8. Проанализируйте следующие предложения с Participle II и переведите их на русский язык

1) Metals have served man to create new machines.

2) The first definition of metals was given by M.V. Lomonosov.

3) Metals have found wide application because of their properties.

4) There are some classifications of metals based on their properties and composition.

5) An alloy is a simple metal combined with some other elements.

6) Some metals are called refractory metals.

7) Metals are found in the form of ores.

8) There are many methods used to separate metals from ore.

9) Impurities are separated and removed as slag.

10) About two thirds of all elements found in the earth are metals.

11) Cast iron is produced in cupolas.

12) Ore is a metal combined with some impurities.

13) Metals used in industry are called engineering metals.

9. Прочтите самостоятельно дополнительный текст по металлам и передайте его содержание на русском языке Текст а

There are many superstitions (суеверий) about iron. The Romans (римляне) believed, if you drew (рисовать, проводить) three circles in the air around anyone and three on the ground with a bit (кусочек) of iron, that person would be bewitched (заколдован). It is interesting to note that wedding rings (обручальные кольца) in Ancient Rome were made of iron.

We find a lot of superstitions among the Creeks and the Egyptians. But we do not have to go back to Roman days for curious superstitions and beliefs (поверий). We can find them nowadays (today). There is still a superstition among some people to-day about horseshoes (подковы). They believe that horseshoes bring good luck or bad luck. Though people were superstitions about iron it turned out (оказалось) to be a much better metal for making tools than bronze. And so the Bronze Age gave ways to the Age of Iron.