文档介绍：numbers in our life
one hundred and fifty yuan
two thousand and eight Olympic Games
millions of stars
since(自从)650 million years ago
about one billion (1,000,000,000 ) years old
two point two six () meters tall
1,000,000,000
one billion
one point three four
100
one hundred
1,000
one thousand
1,000,000
one million
十亿
点
Look
five hundred and forty-three point seven
1562
one thousand, five hundred and sixty-two
6 004 001
six million, four thousand and one
7 198 764 502
seven billion, one hundred and y-eight million, seven hundred and sixty-four thousand, five hundred and two
one point three four
100
one hundred
1,000
one thousand
1,000,000
one million
1,000,000,000
one billion
Listen and Say
(录音p12-2a )
one point three four
100
one hundred
1,000
one thousand
1,000,000
one million
1,000,000,000
one billion
543
five hundred and forty-three
3 980
three thousand , nine hundred and eighty
98 721
y-eight thousand , seven hundred and twenty-one
768 540
seven hundred and sixty-eight thousand , five hundred and forty
Say
one point three four
100
one hundred
1,000
one thousand
1,000,000
one million
1,000,000,000
one billion
5 555 555 555
five billion, five hundred and fifty-five million, five hundred and fifty-five thousand, five hundred and fifty-five
2 346 780
two million, three hundred and forty-six thousand, seven hundred and eighty
405 000 000
forty hundred and five million
There are about billion people in China.
= China has a population of billion.
What’s the population of China?
Look and practice
A: What’s the population of China?
B: It’s about billion.
Pair work
Talk about the chart
6, 800,000,000
What a large population!
The population is increasing by 80 million every year.
80
80
80