Определите инфинитивы в каждом предложении и их ФУНКЦИИ 1. То design, construct and operate a laser system is a great technological achievement.
2. To protect the water resources, forests and atmosphere several laws were passed in Russia in the 1970's.
3. A very interesting problem is to produce a practically limitless source'of energy.
4. There are projects to use lasers for long distance communication.
5. Automation makes it possible to obtain and develop new sources of energy.
6. To combine laser and thermonuclear reaction is a very interesting problem for the scientists in many countries.
7. To conduct physical experiments with laser beams Russian physicists have developed large laser installations.
8. Some Western experts consider that it is practically impossible to protect big cities from pollution.
9. Lasers to be placed on Earth satellites will transform solar radiation into laser beams.
10. A special design bureau in St. Petersburg was the first in the world to develop production of superlong escalators.
11. To put some projects with lasers in operation great technological difficulties must be overcome.
12. One of the ways to make planes as economical as possible is to lighten the aircraft by using new composite materials.
13. Signals to be measured must be strong enough.
1 - They have published her new book recently.
The new book has been published recently by them.
2 - The town council has just opened our local museum.
Our local museum has just been opened by the town council.
3 - Their house looks very neat after they have painted it.
Their house has been painted by them.
4 - The room looks nice. Somebody has cleaned it.
The room has been cleaned by somebody.
5 - My dress is clean. Someone has washed it.
My drees has been washed by someone.
6 - Dinner is ready and hot. Someone has just cooked it.
The dinner has just been cooked by someone.
7 - They have opened a new theatre in the city.
A new theatre has been opened in the city by them.
8 - There are no letters on the table. Somebody has posted them.
The letters have been posted by somebody.
1. haven’t seen him
2. did you pay
3. lost. have you seen them
4. have you last seen
5. has just left
6. was
7. came; left
8. served
9. have you voted
10. did you like
11. hasn’t written
12. have you seen; have seen
13. have you ever tried; have tried; found; started
14. have you read; haven’t; escaped
15. have read
16. have just seen
17. had to; liked
18. has made
19. happened
20. brought
21. have just received; haven’t paid; gave
22. have phoned; got no answer
23. has been empty; has just bought it
24. haven’t saved
25. has been living; decided
26. haven’t seen
27. was
28. has painted
29. have prepared; has booked; has phoned
30. have never met; heard
31. has been out
32. have been
за такие задания следует давать явно больше пяти