The machine that pushes the electrons through the wire is called a generator. The wire from the generator goes to your home and into a control center, which is either a fuse box or a circuit breaker.

The fuse box controls how much electricity you use. If you try4o use too much, you will "blow a fuse", and the electricity from that fuse will be cut off. A circuit breaker works differently from a fuse box. A circuit breaker does not let you use too much electricity. It cuts off the flow before there's an overload.

If you did not have a fuse box or circuit breaker, your electric wires could overheat and start afire!

From the fuse box or circuit breaker, the wires go inside your walls to light switches and sockets. Turning on the light switch lets the electricity flow to the light, and the light goes on. When you put a plug into a socket, electricity comes to the socket. But it doesn't flow into the lamp until the switch is turned on.

III. Translate the text.

Техника безопасности:

Ни в коем случае нельзя одновременно дотрагиваться до бытовых приборов и заземленных предметов (водопроводные трубы, батареи центрального отопления и т. д.). Возможно, что на корпус бытового прибора пробивает электричество. В последнее время все больше и больше приборов имеют заземление. Это делается для обеспечения безопасности потребителей. Такие бытовые приборы имеют трехжильный шнур и вилку с тремя контактами.

IV. Supply somebody, anybody, nobody, (no one, none), something, nothing, everybody,
everywhere nowhere, somewhere, anywhere where required.

1. Good morning...! 2. He never goes by train: he goes... by plane. 3. There is... here. 4. He did … all day yesterday. 5. They want chairs. They have... to sit. 6.... of the pupils will go to school. It is too cold. 7.... is coming to see us. 8. She will tell us... about her holidays.  He will go... to have a little rest. 10. Is... coming to inspect us? 11. Have you... interesting to tell us? 12. Haven't you... to go?

V. Replace the infinitives given in brackets by the Past Indefinite or the Past Continuous.

John (to write) the label when the bell (to ring) and a short man (to enter). A dog (to follow) him.

There (to be) silence while the man (to look) John up and down.

I (to see) the light in your windows as I (to pass).

During the dinner while he (to eat) his piece of cold meat, his aunt (to help) herself to wine.

5. While he (to read) a newspaper she (to sit) studying him, and by the look in her eyes he (to see) that she (to reflect) on something concerning him.

Jim half (to dream) still when he (to come) to the place of his destination.

VI. Choose the correct variant

1. I want to go shopping but if you ______ to come, you

-want, need       -not want, needn't     -don't want, needn't     -do want, needn't

2. If you ______ on this tram it'll take you to the downtown.

- 'll get                - have got                 - got                              -get

3. He ______ to the country tomorrow if the weather is fine.

- go                       -goes                       - 'll go                            -'d go

 4. You'll understand nothing unless you ______ the book yourself.

- read                    -won't read               -don't read                   - 'll read

5. You'll understand this rule after your teacher ______ it to you.

- 'll explain           - explain                    -explains                      - don't explain

Контрольная работа №9

I.   Translate the text.

Kinds of circuits

Circuits can be divided into four classes: series, parallel, combination of serial-parallel, and network.

Series circuits are those having one closed path for the flow of electricity. All the elements, or devices which make up the circuit are connected in tandem, one after the other, so that the end of one is connected to the beginning of the other; or, in other words, the positive terminal of one is connected to the negative terminal of another. If the series circuit is opened anywhere, the current will not flow through the circuit.

A parallel circuit is one divided into two or more branches, each brand carrying part of the current. Another way of saying the same thing is that all the elements or devices are connected so that one half of the terminals are fastened to a common conductor, and the other half are fastened to another common point, or another conductor.

 II. Translate the text.

Перегрузка электрической сети является одной из самых распространенных причин короткого замыкания. Короткое замыкание может произойти и из-за воздействия влаги.