5. State the tense-forms of the verbs in the following sentences and translate them

1. I have just turned the radio on. 2. Have you listened to the news? 3. He understood the text after he had read it again. 4. I have read this book three times.

5. He has never been to the Carpathians. 6. He has seen this film. 7. Have you ever been to New York? 8. He had finished his work by 5 o'clock yesterday. 9. The technician will have recorded the data before you come. 10. I have not seen him since he graduated from the University. 11. We shall have completed our experiments by the end of the week. 12. My friend had prepared his report before we spoke to you. 13. Electronics has made a rapid progress. 14. He had published his article by the end of the month. 15. We've played lots of matches this season, but we haven't won any. 16. She has spent a great deal of time in the Far East. 17. They'll have finished their work by lunchtime. 18. Have you read anything interesting lately? 19. They've probably forgotten the time. 20. They have accepted the scientist's suggestion. 21. We had been conducting this experiment for two hours before you came. 22. When she arrived, I had been waiting for two and a half hours, 23. It has been raining since two o'clock.

6. Translate the following sentences paying attention to the predicates in the Perfect Passive:

1. This theory has been used for analyzing the experimental data. 2. In my opinion this result has not been proved by anybody. 3. The apparatus used in our research has been described recently. 4. We must compare our data with those that have been obtained by other investigators. 5. Many difficulties had been overcome before the researcher succeeded in his work. 6. After the new device had been tested it was installed in our laboratory. 7. The construction of this television centre will have been completed by the end of the next year. 8. Progress has been achieved in developing all branches of science and engineering. 9. Many different devices have been created in order to improve the performance of communications. 10. The information has been based on the data received from a computer. 11. Much research has been carried out

in order to establish the causes of this phenomenon. 12. This question has already been discussed at the conference. 13. By the end of the year a large variety of semiconductor devices will have been produced. 14. This equipment had been repaired before you came. 15. This text has just been translated. 16. Mendeleyev's periodic law has been accepted as a universal law of nature.

7. Compare the use of the Past Simple and the Present Perfect in the following sentences, translate them

1. I have written several letters today. I wrote several letters yesterday. 2. They have made a new experiment this week. They made a new expe­riment last week. 3. She has been to the theatre this month. She went to the theatre last month. 4. Have you ever been to London? Yes, I've been there once. I went there in 1980. 5. Have you ever seen "Hamlet"? Yes, I've seen "Hamlet" several times. I saw it at our theatre three years ago and at Moscow theatres in 1975 and 1980. 6. He has graduated from Moscow University. He graduated from Moscow University in 1978. 7. He has seen this film. He saw this film yesterday. 8. He has improved his device; you may use it. He improved his device a week ago. 9. He prepared his report ahead of time. Have you prepared your report? 10. The results of this research were published long ago. My friend has already published the results of his discovery.