Module9PopulationUnit1课件九年级英语上册

Module9

PopulationUnit

1Theworld's

populationwasabout7.8

billion

in2020.年

级：八年级

学科：英语(外研版)billion

millionfour

hundred

andtwenty-fivewillion,900thousandsix

hundredand

fifty-sevenLet'sreadonebillion,书写时每三位划分为一个单位。

十位与百位间用“

and

”。ninehundredthousand,onebillion,fourhundred

andtwenty-nine

million,one

hundred

andtwenty-fourthousand,fivehundredthreehundredand

forty

million,sixty-fivethousand,five

hundredandfifty-six1,429,124,5001

.4

billion1,425,657,900340,065,556Let'sreadLet'slisten

Listenandchoosethe

correctanswer.1.What'sthe

populationofNewYork?a)About

17

million.c)About30

million.b)About

q

million.2.What'sthe

populationofTokyo?a)About4million.c)About14million.b)About28million.Let'stalkWhatdoyouthinkofTokyo?crowded→lots

ofpeople·

noisy→lots

of

noiseTokyo·Let's

think

AlargepopulationcausesTheworld

population

isstillgrowing/

increasing.Toomuch

noiseToo

muchtrafficmany

problemsLet'slisten

Listenandtick(√)thecorrectanswerWhataretheytalkingabout?The

world's

population

in

2020

and

2030.Countriesthatseethemost

populationgrowth.

Problemscausedby

population

increase.

Waysofwritingthereport.PopulationThe

worldIn

2020:about

7.8

billionIn

2030:8.5

billion

.IndiaIn

2030:about

1.5

billion.China?ProblemsThe

three-child

policyCountries

withhigh

birth

ratesToomuchtraffic

andnoise.Countries

withlow

birth

ratesNotenough

people

to

do

all

the

jobsor

lookafter

the

older

onesLet's

listen

Listen

and

complete

the

form...Lingling:

Whatareyoudoing?Tony:

I'mpreparingareportcalled“The

world'spopulation”

.Lingling:Well,Icanhelp!I

justwatchedavideoaboutworldpopulationyesterday.It

saidthe

world's

population

wasabout7.8billionin2020.Andthenumber

will

climbto

8.5

billion

in

2030.Tony:

I

can'tbelieve

it!That's

ahugenumber.Which

countries

are

seeing

themost

populationgrowth?Lingling:

Thelargestincreasein

population

will

take

placein

India,Nigeria

and

Pakistan.

By

2030,India

will

have

about1.5

billion

people.Tony:

Hangonaminute!I'llmake

somenotes!Linglin

g:

When

populationsincreasetoofast,itcancause

trafficand

noise.Tony:

That'strue.Howaboutcountrieswithslow-

growingpopulations?Linglin

g:Countries

withlow

birth

rates

have

problems

too.There

aren'?

enoughpeopleto

do

all

thejobs,orenoughyoung

peopletolookafterthe

olderones.Tony:

Isee.Great,thanksfor

the

information!Now

I

canwrite

my

report!Everyday

EnglishOI

can'tbelieve

it!Hang

on

a

minute!Great!ProblemsLet's

imitatePopulationCountriesproblems.suchas

too

muchWhydotheytalkabouttheworld'spopulation?Tonyispreparing

areportcalled“Theworld'spopulation”A.a

longpieceofwritingB.afewwordsTalkwith

others.Makesomenotes!Searchon

the

Internet.Let'sthinkChecklistConten·

The

world's

population.·

Countries

that

see

the

most

population

increase.

·

Problems

caused

by

population

increase.Performance四Report

confidently

and

loudly.Hello,everyone!I'mgoingtotalkabouttheworld'spopulationtoday.Theworld's

populationwasabout

..in2020,and

..Suppose

you're

Tony,pleasegiveareportabouttheworld

populationtoyour

classmates.1.Remembert