VIII. Определите функцию инфинитива в данном предложении и переведите его на русский язык.

A pencil lies on the table without any tendency to tip over.

IX.Найдите в тексте и выпишите два предложения с инфинитивным оборотом сложное подлежащее. Предложения переведите.

X.Переведите предложения, обращая внимание на сложное дополнение.

1. We know gravity to act on every particle of a body.

2. One knows it to be in a state of equilibrium.

XI.Ответьте письменно на вопрос по тексту.

How can we find the centre of gravity?

XII.Вставьте в предложения данные слова.

1. All common objects have different …

2. The … of … is an imaginary point.

3. A book lying on the table is in a … of …

4. Heavy objects are more … than light ones.

(stable, state, gravity, stability, centre, equilibrium)

ВАРИАНТ3

I. Прочитайте текст и переведите его письменно.

 

CHEMICAL AND ELECTRICAL ENERGY

The invention of the electric cell has opened the way for the use of a continuously flowing current. The electric current from a cell was found to last relatively long. Discharge from a battery or a dry cell results in a steady flow of a current.

As one should know, the electric cell is a device to convert chemical energy into electric energy. Part of this energy being changed into heat, not all the chemical energy of the cell or battery is transformed into electric energy. At any rate, the sum total of the chemical energy is computed to equal the sum total of all the other forms of energy into which it is converted.

Chemical reaction within the cell tends to keep the two battery terminals charged, one with a positive charge and the other with a negative charge. Connecting the two terminals in a closed circuit leads to a steady flow of electric current from one terminal to the other.

What this flow of current was and how it could flow along a wire has long interested scientists. They didn’t know how to explain it. At first they thought it to be a kind of liquid that really flowed along the wire and back to the battery.

Only the modern theory of the composition of matter could give at last the real explanation of the movement of the electric current. The flow of electrons from the zinc plate to the copper plate in the external circuit was found to represent electrical energy. This energy comes from the zinc that is dissolved in the electrolyte.

II.   Определите какую функцию в предложении выполняет глагол to be и переведите предложение на русский язык. .(см. образец выполнения 1)

What this flow of current was has long interested scientists.

III.Найдите в тексте и выпишите одно предложение с глаголом to have. Определите его функцию. Предложение переведите.

IV.Найдите в тексте и выпишите одно предложение с глаголом to do. Определите его функцию. Предложение переведите.

V. Выпишите из первого абзаца одно предложение в страдательном залоге. Определите время сказуемого. Предложение переведите.

VI. Переведите предложения, стоящие в страдательном залоге. Выпишите сказуемое и определите его время. (см. образец выполнения 2).

1) Chemical energy will be converted into electric energy by the electric cell.

2) Some part of this energy was changed into heat.

3) Two battery terminals within the cell are kept charged.

VII. Найдите в тексте и выпишите одно предложение с инфинитивом в функции части сказуемого (после модального глагола). Предложение переведите.

VIII.Определите функцию инфинитива в данном предложении и переведите его на русский язык.

The electric cell is a device to convert chemical energy into electrical one.

IX.Найдите в тексте и выпишите два предложения с инфинитивным оборотом сложное подлежащее. Предложения переведите.

X.Переведите предложения, обращая внимание на сложное дополнение.

1) They thought electric current to be a kind of liquid that flowed along the wire.

2) Scientists found the energy to come from the zinc that was dissolved in the electrolyte.