I. Translate Into Russian. Explain the use of the infinitive forms alter the modal verb can (could) (§ 20, p. 486).
1. The book can’t be interesting to the boy. it’s much too difficult. 2. Ann is very obedient to her parents. She can’t have done anything against her father’s will. I’m sure.
3. Can the boy’s ambition still be to become a pilot? He’s short-sighted and will never be admitted to a flying school. 4.1 know he is very careful. He couldn’t have mixed up the figures. 5. Can he have done the translation without making a single mistake? Somebody must have helped him, he’s still rather inexperienced in this kind of work. 6. Can he still remember me? We’ve been out of touch for years.
II. Practise aloud. л
1. It can’t be true. 2. They can’t have left. 3. He couldn’t have lost the key. 4. Can it be that late?
III. Use the modal verb can (could) with the necessary form of the Infinitive instead of the Italicized parts of the sentences.
Models: 1. It’s impossible for Comrade Zotov to know what’s wrong with me.
Comrade Zotov can’t (couldn’t) know what’s wrong with me.
2. I'm sure that Comrade Petrov did not see to the matter himself. He was engaged at the confe rence the whole day.
Comrade Petrov can’t have seen to the matter himself; he was engaged at the conference the whole day.
1. I'm quite sure that your friend was not kept at the office. Something unexpected must have happened to him. 2. I doubt whether he’s persuaded her to give up her hobby. 1 tried to do so myself several times but couldn’t. 3. Is it possible that Dr Ivanov is still attending to your father? I heard that he’d retired and a new doctor had taken over. 4. / don’t believe she’s impatient with children. I’ve often heard people praise her for being so nice to her pupils. 5. It’s hardly possible that they are still making preparations for the experiment. The preparatory work must have been under way for a fortnight already. 6. I don’t believe that the work is still under way. They started it a week ago and promised to get through it in two days. 7.1 don’t believe he took oper the job. He is quite unskilled in this field. 8. I don’t believe Peter has declined