9. Transform the following sentences with the Objective Infinitive Complex into complex sentences according to the model :

Model: I knew the message to be urgent. – I knew that the message was urgent.

1. We suppose his discovery to be accidental. 2. They thought him to be eminent scholar. 3. We expected the partners to agree on a number of issues. 4. He knew the work to be under way. 5. We assume these errors to be of no importance. 6. We consider him to be a real genius. 7. He wishes the work to be done at once. 8. We’d like everybody to take part in this research. 9. Experiments proved carbon to occur in many compounds. 10. We expect this substance to catch fire if slightly heated. 11. We know this young scientist to study the activity of volcanoes. 12. Geologists believe those hot springs to be very rich in mineral salts. 14. They expect him to become a real scientist.

10. Translate into Ukrainian the following sentences with the Objective Infinitive Complex:

1. We know this substance to contain traces of sulphur. 2. We believe an atom to contain three kinds of particles. 3. We know the discovery of radium to have been made by M. Curie in 1910. 4. M. Curie found natural pitchblend to be several times more active than purified uranium oxide. 5. In the course of the experiment they saw bubbles begin to form in the vessel. 6. We know this scientist to have made an important discovery in chemistry. 7. They discovered ground water to contain a great deal of impurities. 8. We’d like them to know the results. 9. We know red phosphorus to be a more stable form than white phosphorus. 10. The engineer made his assistant check the results many times. 11. The results of this experiment have shown the above compound to contain some unknown element. 12. We saw the temperature of the solution fall rapidly. 13. The experiments proved free chlorine to be present in the vapour of chromic chloride at 355 degrees. 14. The experiments proved the speed of a chemical action to be altered by a catalytic agent. 15. The experiments proved the speed of a chemical action to be altered by a catalytic agent, the condition of equilibrium being unchanged. 16. We assume the reaction to be due to the formation of a colourless oxidation product. 17. The investigation of the properties of silicon proved it to play an important part in the inorganic world. 18. One finds the melting point of sulphur to be raised by pressure.

11. Paraphrase the following sentences replacing the Subjective Infinitive Complex by

subordinate clauses

Model: Oil is known to be lighter than water. - It is known that oil is lighter than water.

a) 1. She is said to be a good lecturer. 2. The students are expected to know these physical laws. 3. The research is believed to be completed next month. 4. He was said to be working on some new problem. 5. This rule is seen to be followed in many examples. 6. Hydrogen is known to be the lightest of the elements. 8. The research group is believed to complete the work next month. 9. The group is believed to complete the research next year. 10. These elements are known to have been found recently. 11. Our graduates are supposed to work at many different chemical enterprises of the country. 12. Our Institute is considered to be the best in the town. 13. This student is known to translate special articles on ecology. 14. All the details of the plan are supposed to have been explained to you. 15. The lecture was said to be interesting.

b) 1. He proved to be an experienced ecologist. 2. He seems to have worked at Georgetown University in Washington according to the Program of the Ukrainian-American scientific exchange. 3. This engineer appears to have presented some interesting idea. 4. They seem to have some difficulties in making the experiment. 5. She seems to know the problem well. 6. He appears to be much interested in the subject. 7. The man appears to know practically all European languages. 8. He happened to be there when the first geological expedition arrived. 9. He proved to be a brilliant student. 10. I happened to be out when he rang me up.

c) 1. We are sure to take part in this research. 2. The conference is certain to be held in October. 3. She is certain to win the contest. 4. He is unlikely to come back so early. 5. The application of this device in our experiment is certain to give better results. 6. This is unlikely to be achieved. 7. The weather is likely to change.