380,000

1. Unit 19 The world’s population 46 8 Lesson 49 165 380,000

2. How +形容词 How tall 多高 （树,建筑物，人） How high 多高 How wide 多宽 How deep 多深 How thick 多厚 How far多远（问距离） How heavy 多重 How long 多久，多长 How much 数量（不可数），价格 How many 数量（可数）

3. A B C D E F G H 100 1,000 10,000 100,000 1,000,000 10,000,000 100,000,000 1,000,000,000 one hundred one thousand ten thousand one hundred thousand ten million one hundred million one billion one million

4. A 198,679 I 976 B 1,243 J 4,987 C 5,829 K 9,784 D 10,000 L 12,648 E 19,581 M 24,783 F 597 N 82,364,580,000 G 5,789,211 O 444,444,000 H 5,723,764,000 P 1,683,000 3,333,333,333

5. 621,309 1,458,903 86,347,142,609 7,233 2, 046,780 956 197,612,205 432,700,600,005 59,045 867 195 56,870 60,324,700 543 3,980 98,076,570 2,478,590,009

6. Can you work out the maths problems? ---What is …add/(plus)/minus…? ---It’s … A B 248 7354 +652 - 2250 C D 126,704 14,672,991,062 + 3,006 - 4,672,991,062 900 5104 129,710 10,000,000,000

7. ---What is …add/(plus)/minus…? ---It’s … 80,267 +100,000 567,431 _ 57,430 ____________ 180,267 ______________ 510,001 29,055,219,867 _ 9,055,219,000 7,982 + 460,000 ________________ 20,000,000,867 ______________ 467,982

8. 46,600,000,000 dollars

9. Population (2000年) ---What was the population of +国家/地名 in 2000? ---It was about +数字。 1,295,000,000 1,040,000,000 265,000,000 82,000,000 58,000,000 19,500,000 Australia USA China India Germany France

10. Let’s practise: A:What was the population of Germany in 2000? B:It was…… A:Has it increased? B:I don’t know if ... But Germany is not a big country, I wonder if that is a lot of people for the size of the country.( orThough Canada is a big country, if the population goes on increasing, I wonder…)

11. 195 one hundred and ninety-five • five hundred and forty-three • 3,980 three thousand ,nine hundred and eighty • 8,675 eight thousand ,six hundred and seventy-five • 98,721 ninety-eight thousand ,seven hundred and twenty-one

12. 768,540 seven hundred and sixty-eight thousand, five hundred and forty 621,309 six hundred and twenty-one thousand ,three hundred and nine 6,754,320 six million, seven hundred and fifty-four thousand ,three hundred and twenty

13. 2,346,780 two million ,three hundred and forty-six thousand, seven hundred and eighty8,764,532 eight million ,seven hundred and sixty-four thousand ,five hundred and thirty-two 1,458,903 one million, four hundred and fifty-eight thousand, nine hundred and three

14. 98,076,570 ninety-eight million ,seventy-six thousand, five hundred and seventy 注意：百和十(个)之间用 “and” 来连接

15. Try to put these sentences into Chinese 1. They told me that they would visit China the next week. 2. She said that she was going to do some shopping the next day. 3. I didn’t know that they would be able to buy another car. 4. My uncle never knew that a car would cost more than a house. 5.She was our new teacher that year. We all liked her very much and we were going to have a party for her birthday.

16. 本单元短语及词组 slow down 下降；放慢hour after hour 一小时又一小时，连续multiply…by… ……乘以……at the beginning of… 起；开始more and more 越来越…prefer to…rather than… 宁愿……而不愿rather than 宁可；是……而不……beg one’s pardon 请原谅；对不起be busy doing 忙着做……for the size of the country 相对这个国家的容量

17. slow down the population increase 下降人口增长standing room only 只有立足之地produce …for… 为……生产grow faster and faster 增长的越来越快one square metre of space 一平方米的地方at the beginning of the 21st century 在21世纪初be worth …… 值 ……the Rolls Royce 劳斯莱斯牌轿车 the more developed countries 比较发达国家the developing countries 发展中国家the less developed countries 不太发达国家the developed countries 发达国家　

18. Let’s have a rest , dear children!