2. Провести этот опыт- значит получить новые данные.

1. To make this experiment one should obtain new data.

2. To make this experiment means to obtain new data.

3. Определить состав этого вещества очень важно для нас.

1. To determine the composition of this substance we always use this reaction.

2. To determine the composition of this substance is of great importance for us.

4. Чтобы пользоваться этим методом, нужно иметь необходимое оборудование.

1. To apply this method one should have the necessary equipment.

2. To apply this method was absolutely necessary.

Ex.2. Translate the following sentences paying attention to the infinitive:

А) 1. To operate new automatic lines became possible thanks to computers. To operate new automatic lines workers have to get special training. The new automatic line is to operate at numerous plants. The automatic line to operate at the plant will be installed in some months. The task of the computers is to operate the whole line properly.

2.To transform water into steam one must heat it. One cannot transform water into steam without heating it. The water to be transformed into steam must be heated. The function of the device is to transform water into steam. To transform water into steam is not a complex process.

В) 1. Our wish is to help you.2. To help him was impossible. 3. Who can lend me a pencil? 4. To decide is to act. 5. I have come here to talk to you. 6. It’s the only thing to do.7. We have a lot of problems to solve. 8. The lab assistant came to be instructed by the professor. 9. To perform operations computer must accept data. 10. To add and to subtract means to perform mathematical operations. 11. I like to ask questions but I don’t like to be asked. 12. To do the programm for a computer is the main duty of a programmer. 13. The experiments to be carried out will be very important. 14. Lomonosov was the first among peasants to receive higher education in Russia. 15. Some western experts consider that it is practically impossible to protect big cities from pollution. 16. To design, construct and operate a laser system is a great technological achievement. 17. These laboratory works may be done tomorrow. 18. To determine the distance between these two points will be very difficult for the students. 19. Lasers to be placed on Earth satellites will transform solar radiation into laser beams. 20. She was too inattentive to notice the mistake. 21. Nature has many secrets to be discovered yet. 22. He is very forgetful, but he doesn’t like to be reminded of his duties. 23. The heavier the load to be lifted the greater the amount of work to be done. 24. Will you be given any new magazines on Monday? 25. The Curies were the first to discover radium.

Ex. 3. Make up the sentences, matching the suggested parts:

The essential point of these talks The purpose of this experiment The fundemental point of this approach The lack of valid data Low level of accuracy

Is Was makes it made it

to achieve the results. to minimize all complications. to further improve the situation in this region. to obtain as many data as possible. to use all the latest data. impossible to foresee. hard to predict correctly.