- •Unit 5. Covalent Bonds
- •1. Fill in the table:
- •3. Read the dialogue and learn how to speak about your past activities. Put the verb in brackets into the Past Continuous. Pay attention to the terms of electricity.
- •4. Put in the missing words, using the words from the table above:
- •5. Put all possible questions to the following statements.
- •6. Put the verb in brackets into the Past Continuous:
- •7. Form nouns from the following verbs using the suffix ‘-ment’ and translate them:
- •8. Choose the appropriate English equivalents.
- •9. Translate the text. Use a dictionary if necessary. To each sentence put different type of question in Present Continuous.
- •10. Read and Translate word-combinations starting from the first component:
- •11. Match the following word-combinations with their translation:
- •12. Match the following sentences with their translation:
- •13. Choose as many words as you can of Ex.1 and form sensible sentences.
- •Specialist Reading.
- •14. Read the text ‘Covalent Bonds’ only once. How much can you remember? Answer these questions without additional reading.
- •If you failed try to answer these questions again after doing the exercises given below the text.
- •15. Read the text again and complete the sentences with the correct ending.
- •16. Study the text and translate the following:
- •17. Match the terms in Table a with their definitions in Table b.
- •Speaking.
- •18. Summarize the text ‘Covalent Bonds’ in 150 words.
- •19. In pairs ask and answer text-based questions.
- •20. Divide into 2 groups. Group 1 translates Extract a and group 2 – extract b of the text “Semiconductors” with a dictionary in writing.
7. Form nouns from the following verbs using the suffix ‘-ment’ and translate them:
For example: to develop - развивать; development - развитие
to employ – использовать; …
to equip – оборудовать; …
to improve – улучшать; …
to move – двигаться; …
to place – помещать; …
to require – требовать; …
to treat – обрабатывать; …
8. Choose the appropriate English equivalents.
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Они заряжали … - a. They are charging…; b. They were charging…; c. They will be charging… .
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Это происходило … - a. This is taking place…; b. This was taking place…; c. This will be taking place… .
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Вода текла … - a. The water was flowing…; b. The water will be flowing…; c.The water is flowing… .
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Ток проходил … - a. The current will be passing…; b. The current is passing; c. The current was passing… .
9. Translate the text. Use a dictionary if necessary. To each sentence put different type of question in Present Continuous.
The students of the Technical University were carrying out an experiment with a multimeter in the lab last week. They were checking a mains socket in the wall and they were following all the safety instructions. Paul was using two probes that time. While he was inserting them into two terminals of the socket, his groupmate Alex was turning the function selector switch to the VAC (voltage alternating current) range. The needle was indicating the pressure of electricity, i.e. the voltage in the mains. It was 220 volts. Next time they are planning to measure the current in a table lamp.
10. Read and Translate word-combinations starting from the first component:
1.
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electronic |
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construction |
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mathematical |
equipment |
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production |
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testing |
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2.
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alternating |
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periodic |
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physical |
quantity (величина) |
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pulsating |
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vector |
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3.
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integrated |
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quantity (количество) |
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large |
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4.
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mathematical |
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table |
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periodical |
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5.
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crystal |
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lattice |
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point (точечная) |
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6.
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valence |
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electrons |
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free |
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11. Match the following word-combinations with their translation:
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a) special equipment |
1) внешняя оболочка |
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b) a solid piece of pure silicon |
2) ковалентные связи |
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c) crystal lattice |
3) кристаллическая решётка |
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d) covalent bonds |
4) твёрдый кусок чистого кремния |
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e) outer shell |
5) внутренняя оболочка |
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f) inner shell |
6) специальное оборудование |