Grammar: 1. The Objective Infinitive Construction. 2. The use of much. Text: Laser Light. Lesson 23

laser [Teizo] brief [bri;f] intense jm'tens] monochromatic ['тэпэкгои- 'msetik]

coherent [kou'hioront] incandescent [ ,inkaen'desnt] uncoordinated ['Anko'oxhneit- id]

chromatic [kra'maetik]

spontaneously [spon'teinjosli] directionality [di₇rek J9-

'naeliti]

merely ['miali] illuminate [Tlju:mineit] surface ['sa:fis] amplifier ['aemphfaio] image [Tmids] diamond ['daiamand]

Ex. 1. Pronounce the following words:

Ex. 2. Read the following word combinations:

uncoordinated waves; more or less; excited atoms; in technology and physics; ordinary light; internal structure; small areas of any material; incandescent lamp; the probing

of materials; a wide range of materials; well-being of people; coherent light sources.

№ 1

№ 2

№ 3

1. I want him to translate the article tomorrow.

2. I expect the students to pass their exams well.

3. We knew them to have finished their work.

4. I want this experiment to be carried out

today.

1. I see him leave the Institute every day at 5 p. m.

2. I saw him leave home.

3. She hears him speak in the room with the teacher.

1. He makes them clean the laboratory benches when they finish working.

2. Heating caused the body to expand.

Study and remember the following charts:

Ex. 3* Change the following sentences as in the models:

M o d e 1 I: We expect that they will solve this problem very soon.

We expect them to solve this problem very soon.

1. The scientists know that this phenomenon is important.

2. They suppose that she will take part in this work. 3. We consider that he knows the subject well. 4. Chemists know that isotopes find wide application both in industry and agriculture. 5. They expect the reaction will go to comple­tion. 6. We think that he will help us in this work. 7. We consider that mercuric ions are colourless. 8. I want that he will leave for Leningrad tomorrow.

Model II: I thought that he had returned.

I thought him to have returned.

1. We knew that the delegation had arrived. 2. They learned that he had carried out the experiment by the end of the week. 3. They expected that he had passed his last exam well.

Ex. 4. Form words of the same root using the prefixes “in-”, “im-”_p “dis-”, “un-”:

direct, different, dependent, visible, possible, advantage, pure, coordinated, definite.

Ex. 5. Translate the following sentences paying attention to the mean­ings of “much”:

1. This acid is much stronger than that you used before.

2. This reaction depends much on the surrounding air. 3.There is much iron in the Urals. 4. He works much in the labo­ratory. 5. He likes his work very much. 6. They had to work with the solution containing as much as 95% of organic solvents. 7. There is much glassware in our laboratory.

Ex. 6. Remember the following words of the same root:

strong—strength—to strengthen long—length—to lengthen wide—width—to widen

*Ex. 7. Translate the following sentences:

Note: to light — освещать light — свет

light — светлый; легкий

1. Light weight metals are required in the manufacture of aircraft equipment. 2. Silver halides darken when ex­posed to white light. 3. The production of light is the secon­dary phenomenon in those cases in which the energy of ac­tivation is large. 4. Aluminium is a light metal which ex­hibits a silvery luster. 5. The first electric power station built in this region lighted the houses and industrial enter­prises. 6. The amount of light radiated by an atomic bomb is so great that one could hardly imagine it. 7. The labora­tory is lighted very badly, there should be much more light. 8. All light metals are widely used in all the branches of industry.