Добавил:
Upload Опубликованный материал нарушает ваши авторские права? Сообщите нам.
Вуз: Предмет: Файл:
angl_yaz_metod_17_01_17.doc
Скачиваний:
0
Добавлен:
01.07.2025
Размер:
2.74 Mб
Скачать

6.24. Think of a smart material that could be used in the field of your specialization. Discuss your ideas with a partner.

6.25. Fill in the table with the words from the list. Which of them are derived from other words? Which of them have their own derivatives? What are they?

alloy, brass, brittle, bronze, cast iron, ceramic, corrode, diamond, ductile, durable, fibre, flexible, harden, knot, melt, nylon, opaque, platen, powder, resin, resist, rigid, rod, rust, set, soften, steel, stitch, strong, thermoset, thread, tough, transparent, tube, undergo, weak, wire, withstand

material

property

shape

verb

6.26. Fill in the gaps choosing one of the words in brackets

Plastics

Plastics are usually produced by synthesis from such natural materials as water, air, salt, coal, and natural gas. The technology is simple and cheap. While (1) _____ (solid, cheap, uniform) in finished state, plastics are liquid at some stage of manufacture, and it is easy to form plastics into various shapes. Plastics are different in (2) _____ (hardness, properties, needs), characteristics and (3) _____ (pressure, application, thermosets). Plastics are (4) _____ (reliable, available, thermoplastics), (5) _____ (expensive, cheap, structural), durable. Plastics resist (6) _____ (weight, strength, corrosion). Plastics are machined like (7) _____ (metals, ceramics, carbon).

Their (8) _____ (lightness, high weight, colour), strength, hardness, chemical resistance, (9) _____ (colour, durability, application) make it possible to use plastics in electric and electronic equipment, transportation, agriculture, etc.

The application of plastics is (10) _____ (achieving, satisfying, calling for) the requirements of all industries. There is no industry now where plastics are not used.

6.27. Answer the following questions:

1. What materials are usually used to build bridges?

2. What properties are important for such materials?

6.28. Think of a material used in everyday life and answer the following questions:

  1. What are the properties of this material?

  2. Why is it used this way?

  3. Could it be used somewhere else?

6.29. Design a project where a widespread material is used unusually, like paper for constructing bridges. Describe the advantages and disadvantages of using this material for the purpose. Grammar

Ex. 1. Put the verbs in brackets in Present Perfect.

  1. Hurry up! They _____ (start) the film!

  2. Mary _____ (study) hard this year, so she'll pass her exams.

  3. Oh no! She  _____ (drop) the plate!

  4. The garden is very green. It _____ (rain) a lot this month.

  5. These are my favourite trousers. I _____ (have) them for five years.

  6. Tom's my best friend. I  _____ (know) him for three years.

  7. They _____ (live) in Miami for two years.

  8. Jo has earache. He _____ (have) it since 7 o'clock.

  9. Brad _____ (live) in Chicago since 1998.

Ex. 2. Put the verbs in brackets in Present Perfect.

  1. I _____ (not clean) my football boots.

  2. They _____ (not start) their meal.

  3. I  _____ (not do) my homework.

  4. He _____  (not win)  all his matches this year.

  5. My brother and I _____  (not see) any films this week.              

  6. It's my birthday party today. I  _____ (not invite) many people.

  7. He  _____  (not wash) his hands. They're very dirty.

  8. Mum's really angry. We _____  (not tidy) our room!

  9. I can't play with my friends this evening. I  _____ (not finish) my homework.

  10. I  _____  (not visit) New York for three years.

  11. Where's Alison? We  _____  (not see) her since yesterday.

  12. Dad   _____ (not take) a holiday since last August.

  13. John  _____ (not play) the violin since he was school.

Ex. 3. Put the verbs in brackets in Present Perfect.

  1. I know who your boss is. I (work) for him.

  2. Look! Somebody already (broke) the tree.

  3. Mary (go) to Moskow, but she’ll be back next Monday at the latest.

  4. Andy is in hospital now. He (have) a bad crash.

  5. Jane is crying. She (hurt) her knee.

Ex. 4. Put the verbs in brackets in Past Perfect.

  1. I ... (to have) breakfast before I went to school.

  2. He went to meet his friends after he ... (to do) his homework.

  3. By 8 o’clock the rain ... (to stop).

  4. Alice was late because she ... (to miss) the bus.

  5. She went to the post-office after she ... (to write) the letter.

  6. He ... (to work) at the factory before he entered the college.

  7. He got a bad mark for his test because he ... (to make) a lot of mistakes in it.

  8. I went to bed after I ... (to finish) reading the book.

  9. The child ... (to fall) asleep before the parents came home.

Ex. 5. Make the sentences, using the beginnings and the endings. Translate them.

Example: 1 - c His parents were angry because he hadn’t phoned them for several months. (Його батьки були розсерджені, тому що він не дзвонив їм кілька місяців.)

I.

Соседние файлы в предмете [НЕСОРТИРОВАННОЕ]