1.　　　 How has the world changed since you were a child?

4.　　　 And the population of China is about one billion, three hundred million…

4,215→four thousand, two hundred fifteen

12,321→twelve thousand, three hundred twenty-one

34,455,672,456→thirty-four billion, four hundred fifty-five million, six hundred seventy-two thousand, four hundred fifty-six

23,165→twenty-three thousand, one hundred sixty-five

3,257,890→three million, two hundred fifty-seven thousand, eight hundred ninety

345,216,789,065,443→three hundred forty-five trillion, two hundred sixteen billion, seven hundred eighty-nine million, sixty-five thousand, four hundred forty-three

1,234,567,890→one billion, two hundred thirty-four million, five hundred sixty-seven thousand, eight hundred ninety

12,345,678,901,234,567,890→twelve quintillion, three hundred forty-five quadrillion, six hundred seventy-eight trillion, nine hundred one billion, two hundred thirty-four million, five hundred sixty-seven thousand, eight hundred ninety

(For how to say really big number, go to: explore/reallybignumbers.html)

Step 4Talk as they do. (仿说)

Now in groups we shall try to say something about population and its problems. Make use of the information from the conversation we learned just now.

Tony: What is the population of China?

Daming: The population of China is about one billion, three hundred million…

Lingling: It is about 20 percent of the world's population.

Daming: A large population makes many problems for our country.

Tony: And we're in the right place to talk about these problems.

Lingling: There are too many people and there is not enough space, and there is too much traffic, noise and pollution.

Tony: An increasing population is an environmental problem in many cities in China.

Betty: Along with the crowds, there is too much smoke, and the transport problems are serious.

Styep5 Close down by asking and answering conversation questions about environment and pollution.

3.　　　 That makes 136,130,400 babies every year.

2.　　　 Chongqing is the biggest city in China.

1.　　　 Beijing is a big city.

　请根据下面这张表格，写遗篇介绍优秀乒乓球运动员的小作文，字数80字以上。

　 Name: Deng Yaping　　　　　 Date of birth : 02-01973

　 1978:started to play table tennis　　　　 1983: Joined the Henan table tennis team

　 1988 : Joined the national　 table tennis team 　1993-1998: the best women player in the world

10. They__________ (visit) the museum tomorrow.

　 C、根据中文意思填入适当的词。

Yangliwei 　　　　(参加) the Chinese Air Force and he 　　　　　(当)a pilot . He always wanted to

　　　　　 (当) an astronaut. 11years 　　　　　(以后)he joined the Chinese Space Programme with 13 　　　　　(其他)pilots . They trained for five years .

One Wednesday, Yang Liwei and Shenzhou5 spacecraft were sent into space . Yang Liwei 　　　　　　(绕)the Earth 14 times and 　　　　　(到达)an altitude of 343 　　　　　(公里). The space 　　　　　　lasted 21 hours and Yang Liwei landed 　　　　　(安全)the next day . He is famous as an 　　　　　.(宇航员)

9. The teacher with the students__________(water) the flowers now.

8. How many__________ (time) did he orbit the Earth?

7. This shop is(call) “Low Price”.