1. Unit 19 The world’s population46 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, I 976
B 1, J 4,987
C 5, K 9,784
D 10, L 12,648
E 19, M 24,783
F N 82,364,580,000
G 5,789, O 444,444,000
H 5,723,764, 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
C D
126, ,672,991,062
, ,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. ---What was the population of +国家/地名 in 2000? ---It was about +数字。
(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. A: What was the population of Germany in 2000? B:It was……
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.( or Though 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, two million ,three hundred and forty-six thousand, seven hundred and eighty 8,764,532 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!