1. Mike can run very fast. 2. Kate cannot speak English. 3. Can your brother help me with mathematics? 4. Will you be able to do this work tomorrow? 5. Yesterday I could not see him because I was too busy. 6. Could you swim when you were 6 years old? 7. His sister can cook very well. 8. I think that he will not be able to solve this task. 9. Will we be able to go to New York next year? 10. Where can I buy bread here? 11. Could your grandmother dance when she was young? 12. Could you help me? 13. He cannot answer your question. 14. Nobody could help me. 15. Tomorrow I will be free and I will be able to help you. 16. He has been able to swim since childhood.
Exercise 2. , may, might, to be allowed to.
1. May I go to the post-office with Mike? 2. Dont give the vase to the child: he may break it. 3. May we take notes with a pencil? 4. If you have done your homework you may go for a walk. 5. May I invite Nick to our house? 6. It stopped raining, and mother told us that we might go out. 7. She might come home at 10 p.m. yesterday. 8. I think that I will not be allowed to go to the country. 9. Were you allowed to go to the river when you were a child? 10. You will be allowed to go for a walk when you do your homework. 11. He is not allowed to swim in this river. 12. I thought that I might watch TV. 13. Doctor said that I would be allowed to swim in a couple of days. 14. May I come in? 15. You might be more attentive.
Exercise 3. , must, have to, be to.
1. Her English is very poor, she must study very hard. 2. Her English is very good; she must be studying very hard. 3. Her English has considerably improved; she must have studied hard during her vacation. 4. She must have been studying English these five years. Her English is rather fluent. 5. He had to sit up late with his work. 6. Mother has to cook dinner after work. 7. She will have to do it once over again. 8. Well have to speak to him about it. 9. The plane was not to take off at night as the weather was too bad. 10. The plane was to have taken off at night, but the weather was too bad. 11. The order came that we were not to leave the village before dawn. 12. We were not to have left the village before dawn, but by the time the order came we were two miles away from it. 13. Why are you late? You were to have come an hour ago.
Exercise 4. 5 .
1. You can speak English fluently. 2. They must study the material thoroughly. 3. He is to bring these papers. 4. They will be allowed to come later. 5. You had to do this work in time.
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