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3.22 State whether ing-forms are gerunds, verbal nouns or participles.

  1. During the last hundred years many new methods of observing cells have been discussed.

  2. After Newton’s discovering the law of universal gravitation many people became interested in mathematics.

  3. In losing an electron, a neutral lead atom becomes positively charged.

  4. Hybridization, used in conjunction with selection, presents the greatest possibilities for improvement of plants by breeding at the present time.

  5. The fact having been established, the chemists began investigations in search of methods of extracting sugar from beets.

  6. In other air breathing forms the organs of respiration are tracheas, ramifying tubes which open on the surface, their finest branches extending in all parts of the body.

  7. After cotton flowers open, a period of 45 to 70 days passes before the balls open, with the length of time being determined by the variety, temperature, humidity.

  8. In most biology text-books the entire living world is divided into two groups: ”plants” and “animals”. The microorganisms are somewhat arbitrary divided between the two groups, the protozoa being classified as animals and the algae and fungi as plants.

  9. Mastering a foreign language thoroughly is not easy.

3.23 Read the sentences, explain the use of the Gerund and translate them into Russian.

1. Dogs are very good at guiding people apart from catching and guarding things.

2. By measuring the blood pressure of the animals and the people the scientists came to their conclusion that if you stroke a dog or a cat and talk to it, the blood pressure of the animal and the person will go down.

3. Farm life is work in the field and caring for livestock.

4. A common mistake in feeding cats is feeding primarily a single food item such as fish, meat, liver or kidney. It results in the cat's becoming addicted to the food and refusing to eat anything else.

5. When you have skin problems in your dog, take it to the vet and allow him to determine the cause by using careful case histories and modern diagnostic measures before deciding on a course of treatment. It may be necessary to do blood tests, allergy tests or skin biopsies for achieving a complete diagnoses. Bandages or a protective collar which prevents the dog from licking the affected areas of the skin may be applied.

6. My aunt's favourite cow instead of producing milk spent all her time in kicking at anything – hens, pigs, even birds in the sky.

7. If the mammal becomes too hot, it cools itself by sleeking down its hair, sweating, panting or moving to a cool place.

8. Rainforests clean the air by absorbing carbon dioxide and giving out oxygen. The destruction of the rainforests is bringing about changes in the climate, air pollution, flooding, drought and famine.

9. There are several ways to help improve the situation. Firstly, we should encourage recycling because it is the production of new materials which causes the most damage. Secondly, driving an environmentally-friendly car is also important. Furthermore, joining an organization which plants trees or cleans up beaches would be proof that you are really concerned about the environment. Lastly, supporting groups such as Greenpeace would help to ensure that our planet will be clean and safe for future generations.