1. This common phrase is often used in such cases 2. The foundations, the scope and the role of mathematics must be known even by laymen 3. In each country mathematical symbols are translated into peculiar spoken words 4. Basic symbols of mathematics are applied by all specialists 5. The solution of this equation can be easily verified 6. Abstract laws are applied by mathematicians to study the external world of reality 7. Interconnections and interrelations can be represented by a mathematical formula 8. Ambiguity can be avoided by the means of symbolism and mathematical definitions 9. An abundance of unsolved problems is offered by mathematics 10. A very important part of studying mathematics is formed by proving theorems and solving problems 11. The recently published article was discussed at the seminar 12. A mechanical calculator was used in their work 13. The difference between these machines can be easily seen 14. The information is being checked 15. New methods of research have been applied by the researchers 16. The experiment will have been carried out by the end of the week
2. The foundations, the scope and the role of mathematics must be known even by laymen
3. In each country mathematical symbols are translated into peculiar spoken words
4. Basic symbols of mathematics are applied by all specialists
5. The solution of this equation can be easily verified
6. Abstract laws are applied by mathematicians to study the external world of reality
7. Interconnections and interrelations can be represented by a mathematical formula
8. Ambiguity can be avoided by the means of symbolism and mathematical definitions
9. An abundance of unsolved problems is offered by mathematics
10. A very important part of studying mathematics is formed by proving theorems and solving problems
11. The recently published article was discussed at the seminar
12. A mechanical calculator was used in their work
13. The difference between these machines can be easily seen
14. The information is being checked
15. New methods of research have been applied by the researchers
16. The experiment will have been carried out by the end of the week
Olga: Rose! What are you doing here? I have been waiting for you for hours!
Rose: I’m sorry, Olga. I have been trying on these clothes for two hours. And I haven’t decided yet.
Greg: Molly! Call our waiter again!
Molly: I have been trying to call him.
Greg: Molly! We have been sitting here for twenty-five minutes... and I’m not going to wait any more!
Molly: I’m sorry, dear... but he’s again talking to that nice girl.
Greg: Yes, he has been talking to her since we came in.
Molly: Waiter!
Waiter: Yes, ma’am ... Do you want the bill?
Molly: The bill! We haven’t even got the menu yet!
Объяснение:
Present Perfect Continuous:
have been + V+ing
has been + V+ing