POPULATION PROBLEMSPPT课件.ppt

8BU4L1
Population Problems
(tuning in )
growth n. 增长;成长;生长 grow v. 生长;种植
on average = usually --按平均值;通常
solve---vt. 解决;解答 solution---
Africa n. 非洲 African a. 非洲的
5. rapid---a. 快的,迅速的 rapidly---ad. 快地,迅速地
6. terrible---a. 可怕的 terribly ad. 可怕地
7. throw away = get rid of 扔掉;抛弃,丢弃
8. pollute v. 污染,弄脏 polluted a. 被污染的 pollution n. u 污染
be available=be able to get a. 可获得的
Please read the following numbers
23,
356
6,678
456,783
68,965,421
基数词的用法:
基数词 362 , 336 , 375 , 394 的读法
billion million thousand
3,66 three hundred and sixty-six
5,080 five thousand and eighty
5,508 five thousand five hundred and eight
三位数以上的基数词,在百位数与十位数之间用and “ and ”.“百”“千”等词用单数形式
watch a video, tell us what does it talk
about?
population
What’s the population problem?
overcrowding
Please read the chart and answer the questions below. Use the phrases cues.
World Population Growth
Year
Population
1950
billion
1960

1970
billion
1980
billion
1990
billion
1999
billion
2000
billion
2005
billion
2011
billion
does the chart show?
population doubled from 1960 to 1999, didn’t it?
was the population in 2005?
population problems are we faced with?
5. What should government do to control the population growth?
the problem of overcrowding, ageing problem, population growth, control the birthrate
What’s the …of …?
How big is…?
What’s the …of…?
What’s the …of …?
France
Area : 551,000km2
Population : 58,000,000
Capital : Paris
China
Area : 9,600,000km2
Population : 1,300,000,000
Capital :Beijing