Используя диалог из упражнения 1, составьте монолог о машинах и механизмах. Постарайтесь употребить следующие фразы:
• This theme is significant because …
• I’d like to pay attention to … because …
• It is important to know that …
• It is interesting to know that …
• You should note that …
• You shouldn’t mix …
• That means that …
• The definition of ... is the following …
Диалог
The lesson is devoted to the machines and mechanisms.
Teacher: Professor Robinson (Prof. Robinson).
in the bicycle. Note that the name of the working body indicates that
this part helps a person to perform the work for which the machine was
created to.
The purpose of the engine is to transform one form of energy into
another. In a car, motorcycle, tractor, energy of fuel is converted into
heat and then into mechanical motion. The engines of the vacuum
cleaner, washing machine turn the electrical energy into mechanical.
All engines, including electric motors, are heated during operation. This
means that part of the energy is converted into heat.
Student 2: But, Prof. Robinson, a bicycle does not have any engine.
Why is it called a machine?
Prof. Robinson: Good question! You see, the person performs the
role of the engine and spends his energy. That is why, it is a machine.
Student 2: Now, it’s clear for me. Thank you!
Prof. Robinson: Good! Now, let’s sum up. Machines are devices that
perform useful work for a person and at the same time turn one kind of
energy into another. The main parts of each machine are the working
body, engine, and mechanism. Mechanism is a device for converting one
kind of motion into another.
Thank you for attention. Revise the material “Machines and Mecha-
nisms” and be ready for the next lesson!
2. Hockey is played in the winter period.
3. Mushrooms are collected in the fall.
4. Many houses were burnt during the Great fire in London.
5. Its new book (up to the end) next year. (проверьте, так ли все написано!)
6. Flowers are sold in shop and on streets.
7. St. Petersburg was founded in 1703.
8. Bread (is eaten) every day. (глагола не было. Поставила свой! Проверьте по учебнику!)
9. The letter was received yesterday.
10. A nickname will be sent to Moscow next week.
11. I was asked at a lesson yesterday.
12. I was given library last Friday. (проверьте так ли написано предложение!)
13. Many houses are built in our city every year.
14. This work will be done tomorrow.
15. This text was translated at a lesson.
16. These trees were planted in the fall of last year.
17. Many interesting games are always played at our lesson PT.
18. This bone will be given to my dog tomorrow.
19. We were invited in consent last Saturday.
20. New (to find) a downtime again. (поверьте предложение!)
21. Rome wasn't built in day.
Jetlag happens when you go (4) ..to.. a country where the time is very different. For example, you might leave London (5) ...at.. midday amd fly (6) ..to.. Los Angeles. The flight takes about eleven hours, so when you arrive (7) .at... Los Angeles airpot, your body thinks you're there (8) ..at.. 3 pm local time. So, (10) at midnight Los Angeles time, your body (which still thinks it's (11) .in... London) says it's 8 am. It takes a few days for your body clock to change.