Exercise 1. Translate the text in a written form.
The first automatic computers of the 1940’s were not reliable. The equipment of which they were made had not been accurate and reliable. The programmer for the problem usually had to program the check by doing the same operation in another way. For example, in multiplication A times B he used the equipment differently from B times A, and so both operations might be programmed, and then the computer was given an instruction to compare the results. If a difference in results was more than a tolerance, the machine was stopped, and the operator in charge of the computer and the mathematician in charge of the program consulted on how to get rid of the error. Those days had gone long ago. Now computers can operate with extraordinary reliability, with as many as a billion or ten billion operations between errors. Automatic checking of different kinds is built into the machine. Exercise 2. Put IN, AT, ON. 1. Can you wake me … 6.30? 2. I usually go skiing … February. 3. Can we meet … lunchtime … Tuesday? 4. I saw her … 1998. 5. I’m never hungry early … the morning.
Put IN, BY, FOR. 6. They waited … a minute or two and then went away. 7. I lived in Poland …. six years. 8. Can you come to me … a day? 9. I must find some money … he end of September. 10. My grandpa will be 60 … two months.
Put IN, AT, ON 11. Their house is down … the bottom of the hill. 12. “Where’s Kate?” “… the kitchen”. 13.The cat likes to sleep … the roof of the car. 14. Don’t leave your keys … your car when you get out. 15. We had really a bad meal …. the restaurant last night.
Put UP, DOWN, OFF, PAST 16. Can you take your coat … . It’s rather hot in here. 17. He can’t go …. the stairs. He’s ill. 18. Yesterday he fell … his bike and hurt himself greatly. 19. Go … the museum to get to Lisa’s home. 20. I like this fresh air, but we are to go …. the mountain. Грамматический комментарий. Настоящие времена в сравнении. Настоящее простое время. ( Present Simple Tense) 1. употребляется:
He speaks French well.
Don’t talk so loudly, I hear you well. Образование настоящего простого времени.
My son plays the piano. I play the piano.
Does he play the piano? Do I play the piano?
He does not play I do not play Настоящее длительное время ( Present Continuous Tense) 1. употребляется:
He is reading a book. 2. Образование настоящего длительного времени:
Is he reading a book?
He is not reading a book.
Настоящее совершенное время ( Present Perfect Tense) 1. употребляется
I have opened the window. 2. Образование настоящего совершенного времени:
He has worked. They have gone to Brazil.
Has he worked? Have they gone to Brazil?
He has not worked. They have not gone to Brazil.
Будущие времена в сравнении. Будущее простое время. ( Future Simple Tense) 1. употребляется:
Но! НЕ УПОТРЕБЛЯЕТСЯ В ПРИДАТОЧНЫХ ПРЕДЛОЖЕНИЯХ УСЛОВИЯ И ВРЕМЕНИ! He will give me the book tomorrow. If he gives me a book, I will read it with pleasure. Образование будущего простого времени.
Will he give me the book?
He will not give me the book.
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