21. Переведите предложения с субъектным инфинитивным оборотом. Отразите в переводе значение, передаваемое формой инфинитива

1. Iron is considered to be the most useful of metals.

2. We аre said to live in the age of atomic energy.

3. He is supposed to have studied well.

4. Volta is known to have invented the first electrical battery.

5. They are assumed to have explained the plan to you long ago.

6. The plan in expected to have been explained to you long ago.

7. The results are supposed to have been used in many experiments.

8. Coal is considered to have been formed in the earth thousands of years ago.

9. He is supposed to be working at this report.

10. These students are said to be translating the text in the 1ibrary.

11. The results were known to be used in many experiments.

12. The experiments are supposed to be made by him in the lab.

13. Cathode ray tubes were known to be employed to compare frequencies.

Информация V Особый случай субъектного инфинитивного оборота

I. Несколько глаголов употребляются с субъектным инфинитивным оборотом в действительном залоге:

to seem – казатьcя

to appear – казатьcя

to prove – оказываться

to turn out – оказываться

to happen – случаться

This substance seems to possess useful properties. – Кажется, (что) это вещество обладает полезными свойствами. Не happened to be ill at that time. – Случилось, что он был болен в то время.

II. Субъектный инфинитивный оборот употребляется со словосочетаниями (глагол-связка to be + прилагательное).

to be likely – вероятно, возможно

to be unlikely – маловероятно

to be certain – несомненно, безусловно,

to be sure – конечно, наверняка.

Water is likely to be present on Mars. – Возможно, что на Марсе есть вода.

22. Найдите предложения с субъектным инфинитивным оборотом. Укажите признаки, помогающие его определить

1. We expect him to come tomorrow with his sister.

2. Yablochkov is known to be the inventor of the electric candle.

3. The new rocket is reported to go into operation next year.

4. The helium atom was found to have two electrons.

5. He observed the stars appear in the sky.

6. We know the ohm to be the standard unit of resistance.

7. The plant is sure to receive new machines.

8. The delegation is likely to come tomorrow.

9. The soil proved to be rich in minerals.

10. Lightning was proved to be a discharge of electricity.

23. Укажите на особенности субъектного инфинитивного оборота, в следующих предложениях. Переведите

1. This material is sure to help you in your work.

2. His experiment is certain to be successful.

3. The students are sure to know that law.

4. He is likely to pass all the exams.

5. They are unlikely to change their plan.

Обзорные упражнения Инфинитив

Запомните случаи, в которых инфинитив употребляется без частицы "to":

• после модальных глаголов;

• после глаголов to let и to make;

• в сложном дополнении после глаголов восприятия: (to see, to hear, to feel, etc.);

• после выражений: I would rather...

You had better...