10. Translate sentences into Russian.

1. Все во Вселенной сделано из атомов. 2. Ядро э –то центр атома. 3. Ядро состоит из нейтронов и протонов. 4. Электроны вращаются вокруг ядра по орбитам. 5. Электроны удерживаются на своих орбитах силой притяжения к атомам. 6. Протоны несут положительный заряд, а электроны – отрицательный. 7. Противоположные заряды притягиваются. 8. Чтобы оторвать электроны от ядра нужно приложить силу, которая заставляет электроны двигаться от одного атома к другому. 9. Движение электронов в одну сторону называется электрическим током. 10. Сила, которая заставляет электроны двигаться по проводу, называется напряжением. 11. Сила, которая не позволяет электронам двигаться по проводу, называется трением или сопротивлением.

11. Retell this text. Grammar exercises. Прямая и косвенная речь.

1. Преобразуйте следующие повелительные предложения прямой речи в косвенную. Сделайте необходи­мые изменения.

1. "Go home," said the teacher to us. 2. "Buy some meat in the shop," said my mother to me. 3. "Sit down at the table and do your homework," said my mother to me. 4. "Don't forget to clean your teeth," said granny to Helen. 5. "Don't sit up late," said the doctor to Mary. 6. The doctor said to Pete: "Don't go for a walk today." 7. "Don't eat too much ice-cream," said Nick's mother to him. 8. "Explain to me how to solve this problem," said my friend to me. 9. The doctor said to Nick: "Open your mouth and show me your tongue." 10. "Don't be afraid of my dog," said the man to Kate. 11. "Take this book and read it," said the librarian to the boy.

2. Передайте следующие повествова­тельные предложения в косвенную речь.

1. Не said to me: "I want to see you today." 2. She said: "I am free tonight". 3. Mother said to me: "I feel bad today." 4. The pupil said to the teacher: " I can do my homework after dinner." 5. The teacher said to Jack: "You work hard, I know. You are a good boy." 6. The teacher said to the pupils: "Next year we shall have six hours of English a week." 7. The old man said to the girl: "You can sing perfectly. I think you will be a fa­mous singer." 8. My sister said to me: "You look very well, much better than you looked yesterday. I think you have recovered after your illness." 9. My brother said to me: "I am going to become a doctor." 10. My uncle said to us: "I buy several newspapers every day."

3. Передайте следующие специальные вопросы в косвенную речь.

1. I said to Nick: "Where are you going?" 2. I said to him: "How long are you going to stay there?" 3. I said to him: "How long will it take you to get .there?" 4. Pete said to his friends: "When are you Cleaving St. Petersburg?" 5. He said to them: "Who will you see before you leave here?" 6. They said to him: "What time does the train start?" 7. Ann said to Mike: "When did you leave London?" 8. She said to Boris: "When Will you be back home?" 9. Boris said to them: "How can I get to the rail­way station?" 10. Mary asked Tom: "What time will you come here tomorrow?"