VII. Discuss the following questions with your partner.

1. What’s the title of the topic?

2. What information does the text contain?

3. How many groups are building materials divided into?

4. What principle is this classification based on?

(appearance, function, size).

5. Speak about main building materials.

6. What are binding materials?

7. Do you think secondary materials are important? Why?

8. What is a general classification of materials?

9. What natural materials do you know?

10. Tell us about artificial building materials.

11. What is a new trend in engineering?

12. What materials do prevail in modern construction?

13. How are the properties of building materials classified?

14. What physical properties of materials do you remember?

15. What can you say about mechanical properties of materials?

16. What are chemical properties of materials?

17. What’s the role of building materials in our life?

18. Make a conclusion about building materials.

VIII. Choose a topic about 3 groups of materials, general classification, properties or application. Act the dialogue with your partner.

IX. Sum up the topic Building Materials.

Unit III

Phonetics: Compare the words and their meanings.

Grammar: Perfect Active and Passive verb forms.

Text: Plastics.

Topic: My speciality.

Exercises.

1. Read the following words and translate them into Russian:

plastics plastic plastering;

wall well will;

plan plane plain;

resin rubber;

hotel hostel;

offer off;

colour column;

synthetic scientific;

date data;

theme them;

retain restore;

property produce;

modify mould;

by buy;

form from.

2. Say, translate and memorize the following words.

Plastics, resin, resulting, initial, flexible, production, petroleum, alloying, polymer, replace, durability, reason, undergo, laminate, wonder, deformation, conclusion, condition, insulating, extremely, covering, subjected.

III. Work in pairs. Compare the sentences and translate them into Russian.

1. He came by car yesterday.

2. They didn’t go to Kiev last year.

3. I knew him in 2000.

4. They were learning the new English words when I came into the room.

5. We shall finish the work tomorrow.

6. The experiment was completed two days ago.

7. Her plans are changed every day.

1.He has just come by car.

2.They have never been to Kiev.

3.I have known him since 2000.

4.They had already learnt the new English words when I came into the room.

5.We shall have finished the work tomorrow by 5 o’clock.

6.The experiment had been completed by the end of last month.

7.Her plans have been already changed.