Перепишите следующие предложения, определите в каждом из них видо-временную форму и залог глагола-сказуемого. Переведите предложения.1. Different alloying elements are also used in production of steels. Различные легилирующие элементы также используются в производстве стали. 2. Hardening agents prevent dislocations in the iron atom crystal lattice. 3. More efficient production methods were devised in the 17th century. 4. Such method as basic oxygen steelmaking lowered the cost of production steels. 5. Higher concentrations of carbon or lower temperatures will produce cementite

Nature is all around us. We see it every day. It’s the sunset, the sunrise, the song of birds, the blooming оf flowers, the wind that blows, etc. These signs are an integral part of our lives. On the one hand we cherish these natural blessings, on the other hand – we don’t appreciate fully their importance. Thus, our future generations can be cut from these treasures. They might see less of natural wonders, because the humanity gradually destroys forests and kills some species of animals. It all happens due to industrial revolution and the growing number of chemical plants. Humans are the only species on our planet that consciously manipulate the environment. Unfortunately, we are poor leaders in this hierarchy, if we can’t increase the awareness of ecology.

Упр. 1.

1. I go to bed at ten o'clock every day. 2. I went to bed at ten o'clock yesterday. 3. My brother washes his face every morning. 4. Yesterday he washed his face at a quarter past seven. 5. I do not have history lessons every day. 6. We did not rest yesterday. 7. My brother did not drink cof­fee yesterday. 8. My mother always takes a bus to get to work, but yesterday she did not take a bus. Yesterday she walked to her office. 9. Do you talk to the members of your family every day? - Yes, I do. But yesterday I did not talk to them: I was very busy yesterday. 10. Did you come home at six o'clock yesterday? - - No, I didn’t. Yes­terday I came home from school at half past eight. I was very tired. I had dinner with my family. After dinner I was very thirsty. I drunk two cups of tea. Then I rested. 11. Does your sister go to school every day? - - Yes, she does.

Упр. 2.

1. My friend knows English very well. 2. Who did ring you up an hour ago? 3. He lived on the third floor. 4. Did it take you long to find his house yesterday? 5. When are your lessons over on Monday? (обычно) 6. I had dinner with my fam­ily yesterday. 7. Her friends were ready at five o'clock. 8. One of her brothers made a tour of Europe last summer. 9. Queen Elizabeth II was born in 1926. She became Queen of England in 1952. 10. Do you always get up at seven o'clock? — No, sometimes I get up at half past seven.