Вправа 3. Замість підрядних речень використайте Participle I. 1. When you speak English, pay attention to the order of words. 2.Be careful when you are crossing a street. 3.When you are leaving the room, don't forget to switch off the light. 4. When you begin to work with the dictionary, don't forget my instructions. 5. When they were travelling in Central Africa, the explorers met many wild animals. 6. When you are copying English texts, pay attention to the articles. 7. You must have much practice when you are learning to speak a foreign language.

1. Кремний используется для изготовления чипсов. 2. Эйнштейн представил свою теорию относительности в 1905 году.

3. Ученые проводят исследования во всех областях науки.

4. Наша компания купила компьютеры и принтеры.

5. О свойствах этих систем говорили.

6. Результаты эксперимента будут опубликованы через месяц.

7. Время операции сократилось.

8. Этот карманный компьютер сделан в Японии.

9. Две статьи были написаны этим ученым в году.

10. Мы используем этот прибор для измерения давления.

11. Это устройство только что было протестировано.

12. В этом районе строится новый стадион.

13. Текст был переведен к 17 час. вчера.

14. Электроприборы широко используются в промышленности и дома.

15. Этот робот уже использовался в промышленных целях.

Объяснение:

Health plays a very important role in our life. Nowadays, many people think that good health is above wealth and an each man needs in healthy body, but others disagree with them.

In my opinion, health is the key to a happy life. In the first place, a healthy person full of energy and positive. He enjoys life and share this joy with others. Second, health prolongs life and helps in old age to be active as in youth. Finally, a healthy body can lead people to a healthy mind and a bright and interesting life.

Nevertheless, some people believe that health insurance is a waste of time and efforts. They consider that a healthy lifestyle and proper nutrition is expensive and does not brings any result.

I completely disagree with this opinion. Easy to be healthy, because it is necessary to follow a few simple rules. Moreover, health is cheap and available for everyone.

In conclusion, I am strongly convinced that in every human life health is a very important thing. All people must take care of their health, because it is easier to take care of our health that to recover it. We should not forget that the first wealth is health.