6. Complete the questions then practice in pairs. 1. French and British inventors invented Concorde in 1962. When did French and British inventors invent Concorde? 2. They spent £1.5 billion on developing Concorde/ How much ? 3. In 1976 British Airways and Air France introduced their first passenger plane.
196
When ? 4. Flying at twice the speed of sound means that flying time is reduced by half. What ? 5. Twenty planes have been built up present day. How many ?
Making negatives
7. Correct the sentences. Listen to and check your answer. 1. Astana is the capital of China. Astana isn‘t the capital of China. Astana is the capital of Kazakhstan. 2. Concorde, the world‘s slowest plane. 3. German and American inventors dreamed of having a supersonic plane.. 4. It was tested for over 7,000 hours, which makes it the most tested plane in history.. 5. Each plane is produced at cost of £55 million, which makes them very cheap! .
2. There are 8 columns in the periodic table. In each column, elements are arranged by the same properties, such as the same orbital arrangement of electrons.
3. Mendeleev predicted properties of yet undiscovered (missing) elements and left empty spaces for them in the table.
4. There are natural groupings between the elements that are closely related to each other.
5. In order to understand better these natural groupings, chemists have tried to fit the elements into a single plan.
6. John Ncwlands made one of the first attempts to fit the relationships among the elements by suggesting the Law of Octaves.
1.We do not always call different ports following the instructions.
2. When his ship does not enter some ports, he usually has a lot of work to do.
3.The student on duty does not always report to the teacher at the beginning of the lesson.
4.When he is not around the world, he usually has a good time.
5.It is not very difficult to communicate with a person who speaks a different language than you.
6.In spring, summer and autumn, he does not sail on a passenger liner. In winter, he does not teach navigation at the naval school.
7.This is only possible if the crew does not speak a common language - English.
8.There are no seafarers of different countries and nationalities on board.
9. My friend is often not actively involved in the community life of our college.
10. He doesn't work hard when he is sailing.
Объяснение
толко отрицателние