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(причастием, герундием, отглагольным существительным):
1. Growing roses takes a lot of care and attention.
2. Having prepared all the necessary equipment, they began the experiment.
3. Mary will stop for a few days at the seaside before going back home.
4. While translating the text, I looked up many words in the dictionary.
5. I usually help mother by washing the dishes and doing the rooms.
16. Употребите сказуемое в следующих предложениях в Present Perfect Continuous (Progressive). Переведите предложения на русский язык:
Образец: Не has worked at the plant for many years.
He has been working at the plant for many years.
Он работает на этом заводе в течение многих лет.
1. They have lived in Moscow since 1953.
2. We have used this textbook since January.
3.They have travelled all over Europe.
17. Переведите следующие предложения на русский язык, обращая внимание на времена группы Perfect Continuous (Progressive):
1. They had been waiting long before the train arrived.
2.We felt very tired because we had been working for many hours.
18. Замените в следующих предложениях действительный залог страдательным, обращая внимание на времена группы Indefinite (Simple):
Образец: They build many new houses every year.
Many new houses are built every year.
1. He wrote that book last year.
2. She reads English books every day.
19. Замените в следующих предложениях действительный залог страдательным, обращая внимание на времена группы Continuous (Progressive):
Образец: They are building a new house in our street.
A new house is being built in our street.
1. At seven o'clock, when you telephoned, I was reading the newspaper.
2. The students are taking examinations in the next room.
20. Замените в следующих предложениях действительный залог страдательным, обращая внимание на времена группы Perfect:
Образец: They have built a new house in our street.
A new house has been built in our street.
1. She had finished her work by this time yesterday.
2. The students had translated the text before the bell rang.
21. Переведите следующие предложения на русский язык, обращая внимание на употребление глагола should:
1. He should take more physical exercises.
2. He should not waste so much time on unimportant details.
3. You really should go and see a doctor.
22. Переведите текст, составьте 5 вопросов, раскрывающих основное содержание текста:
Changes in Materials Technology
Since the technology of any age is founded upon the materials of the age, the era of new materials will have a profound effect on engineering of the future.
Not only new materials, but related, and equally important, new and improved and less wasteful processes for the shaping, treating and finishing of both traditional and new materials are continuously being developed. It is important that an engineer should be familiar with them. These include casting, injection molding and rotational molding of components of ever increasing size, complexity and accuracy; manufacture of more complex components by powder metallurgy techniques; steel forming and casting processes based on new, larger and more mechanized machines, giving reduced waste and closer tolerances; the avoidance of waste in forging by the use of powder metallurgy or cast pressforms and new finishing processes for metals and plastics, just to name a few. A high proportion of these processes is aimed at the production of complex, accurate shapes with a much smaller number of operations and with far less waste than the traditional methods of metal manufacture.
Joining techniques have developed to unprecedented level of sophistication and are also providing opportunities for economies. It is necessary to mention that these newer techniques allow the manufacture of complicated parts by welding together simpler sub-units requiring little machining; such assemblies can be made from a variety of materials. The methods can also be used effectively
for assembly, allowing savings to be made in both materials and machine utilization.
The brief review of new processes above has indicated that a new materials technology is rapidly emerging, providing new opportunities and challenges for imaginative product design and for more efficient manufacture.
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