Translate and memorize the following words. Grammar: The Subjunctive Mood

UNIT III POLYMERS

Grammar: The Subjunctive Mood.

The use of weather.

Text: The Nature of Polymeric Materials

precipitate	protein	adhesive
isolate	cellulose	corrosion
govern	glycerol	superior
desire	starch	cheap
repair	resin	expensive
compete	rubber	viscometer
supply	moisture	fragility
alcohol	fur	durability
involve	wool	resistance

2. Define the parts of speech. Translate these words and their derivatives:

polymer – polymeric – polymerization – polymerize; moisture – moisturize; during – durable – durability; resistance – resistant – resist; fragility – fragile; isolate – isolation.

3. Form the words with “-proof ”(-непроницаемый/ -стойкий) and translate them:

Model: water – waterproof

air, dust, moisture, light, damp, fume, gas, heat, time, tear, vapour, wear.

4. Translate the following word combinations:

material needs, man-made polymers, long-life durability, until very recently, principal products, a large scale.

5. Find the pairs of synonyms and remember them:

to provided, due to, lately, to supply, because of, recently, artificial, a lot of, man-made, many, to learn, for example, to find out, for instance, various, different.

6. Find the pairs of antonyms and remember them:

natural, long, artificial, shortly, involve, appear, modern, evolve, heavy, disappear, оld, light, cheap, expensive.

Study and remember the following charts:

1.It would beinteresting to see our new laboratory. 2. He would comeif he were free. 3. He could takepart in this work, if he were not so busy. 4. He might answerthis question if you help him.

1. It is important that he should take partin our research. 2. It is unlikely that this experiment should beinteresting. 3. He suggests that this new method should be used. 4. Read attentively lest you should make mistakes.

7. Make up sentences according to the models:

Model I: In your placeI should take part in the discussion today.

to attend his lecture

to find out the composition of the mixture

to follow this method

not to pay attention to his words

Model II: It is necessary that you should examine this substance.

he to solve the question

we tobe present

she to send for him they

they to detect the particles

Model III: He proposed that they should take their examination soon.

suggest	he	not to translate this article
demand	she	to discuss the problem
insist	we	to use reliable means
propose	they	to work out a new method

8. Open the brackets choosing the correct verb forms:

1. It is necessary that this substance (should, shall) be analysed under suitable conditions. 2., If they used these materials, the cost of production (would be, will be) much cheaper. 3. Everybody (should, shall) know that Soviet scientists developed methods of obtaining strong and cheap glass fibre. 4. If you (use, used) such fibres, the material will be very durable. 5. Had they known about this new dis­covery earlier, they (would apply, would have applied) this method in their investigation. 6. Decrease the temperature lest the solution {would, should) evaporate. 7. Were I in your place, I (should, would) investigate the properties of these synthetic materials before using them. 8. The professor insisted that I (should, shall) take part in this work. 9. Ii is desirable a chemist (should, will) know the structure of a polymer. 10. Unless synthetic polymers possessed such valuable properties, they (will, would) not be so important for industry.

9. Open the brackets using the correct verb forms:

1. It is important that this new invention (to be used) for peaceful purposes. 2. It is necessary that the solution (to be heated) to a high temperature. 3. They suggested that this chart (to be learned). 4. The scientist insists that this new technique (to be applied).

10. Translate the following sentences according to the model:

Model: Nobody knew at that time whether a chain reaction was possible at all.

В то время никто не знал, возможна ли цепная реакция вообще.

1. The scientists wanted to find out whether these new substances could be produced on a large scale. 2. The question could then be raised as to whether the reaction rate was enough. 3. He wanted to reveal whether these compounds had been known in the ancient times. 4. Sometimes it is difficult to say whether a given substance is a mixture or a chemical compound.

11. Translate the following sentences into Russian:

Note: to make – делать, производить

to make up – составлять

to make for – cnoсобствовать

to make use – использовать

1. Inorganic chemistry is the study of those substances which make up the dead material of the universe. 2. The chemical industry makes use of isotope instruments to su­pervise a number of chemical processes. 3. Any process in which oxygen is made to combine with a given substance is called oxidation. 4. Free hydrogen, if it could normally exist is made up of diatomic molecules H: H. 5. Heating makesfor the acceleration of the particles.

12. Open the brackets choosing the suitable verb:

1. They (made up/made) this solution evaporate by raising the temperature. 2. These crucibles are (made up/made) from iron and porcelain. 3. Everyone knows that a molecule of water is (made/made up) of two atoms of hydrogen and one of oxygen. 4. High pressure (made/made up) the analyst stop carrying out that experiment. 5. In the presence of sufficiently powerful oxidizing agents, most substances can be oxidized, and (are made/made up) to serve as reducing agents. 6. A brief study of this method should be (made use of/ made).

Дата добавления: 2014-10-31