人教版九年級英語全冊 Unit 13 Section A1(1a-2d)課件

Unit13We'retryingtosavetheearth!SectionA(1a--2d)Doyouthinkourearthisbeautiful?Buttoday,wearelivinginadifferentworld.Theworldisfacingmanyproblems.Theworldisfacingmanyproblems.endangeredanimalsglobalwarmingdesertificationpollutionPollutionWhatkindofpollutionisit?airpollutionwaterpollutionnoisepollutionlandpollutionItisnoisyaroundusalltheday.Whatcausestheproblem?Herearesomewordsrelatedtodifferentkindsofpollution.Writethemintheboxbelow.Thenaddmorewords.(P97)1aloudmusiccarsrubbishplaneslitteringshipsfactoriessmokingbuildinghousesmobilephonesnoisepollutionloudmusiccarsrubbishplaneslitteringshipsfactoriessmokingbuildinghousesmobilephonesloudmusiccarsplanesfactoriesbuildinghousesmobilephonesmachines;traffic...airpollutioncarsplanesfactoriessmokingbuildinghousesburning....waterpollutionrubbishlitteringshipsfactoriesindustrialwaste....Whatcausesnoisepollution?1.Manypeopleplayloudmusic.2.Therearemanycarsontheroadandthedriversalwayshonk.3.Whentheplanetakesofforlandson,itmakesnoises.4.Themachinesinthefactoriesworkalldaylong.5.Peopletalksoloudlyonthemobilephoneorinthepublicplaces.Howtodealwiththeproblem?1.Encouragepeopletotalkinalowvoice.2.Putupsomesignswiththewords“Nohonking”ontheroadorintheneighborhood.3.Themachinescanonlyworkindaytimeonweekdays.Theweatherisalwayssmoggy.Wecan'tseethebluesky.Wecan'tbreathethefreshair.

Doyouknowwhy?Airpollutionissoserious!Whatcausestheproblem?

Factories

producetoomuchdangerousgas.Thetrafficproducestoomuch

tailgas.Somepeoplesmokeinpublicplaces.Howtodealwiththeproblem?1.Thefactoriesmustcleanupindustrialemissions.2.Peoplecandrivecarsless,andtakepublictransportationsmore.3.Nosmokinginourdailylife.waterpollution1.Whatwastheproblem?2.Whatcausedtheproblem?3.Howshouldtheproblembesolved?1bListenandcompletethesentences.Whatwastheproblem?Theriverwas_____________.Eventhebottom

oftheriverwasfullof________.Therewerenomore_____forfishermen

tocatch.Whatcausedtheproblem?Peoplearethrowing_____intotheriver.Factoriesareputting_______intotheriver.Howshouldtheproblembesolved?Weshouldwritetothe___________andaskthemto___________thefactories.Everyoneshouldhelpto________theriver.reallydirtyrubbishfishlitterwastegovernmentclosedowncleanupListenagainandanswerthefollowingquestions.WhatdoesTonywanttodolaterthisafternoon?

Hewantsto______________________intheriverlaterthisafternoon.2.Howwastheriverinthepast?Itusedtobeso_______.Ithasbeenthe____________inthistown.goswimmingwithMarkcleannicestriver1cRole-playtheconversation.Thenmakeyourownconversationsaboutthekindsofpollutionin1a.Mark:Theriverwasdirty.Eventhebottomoftheriverwasfullofrubbish.Tony:Butitusedtobesoclean!Mark:Yes,butpeoplearethrowinglitterintotheriver.Tony:Everyoneinthistownshouldplayapartin

cleaningitup!2aListentotheinterview.CirclethekindsofpollutionthatJasonandSusantalkabout.landpollutionB.airpollutionC.noisepollutionD.waterpollution2bListenagainandcompletethesentences.1.Theairisbadlypollutedbecausethereare___________ontheroadthesedays.2.Factoriesthatburncoalalso________theairwithalotofblacksmoke.3.Thereisalsotoomuchrubbishandwaste.People_________________thingseveryday.4.Peoplearealsolitteringin____________likeparks.Thisisturningbeautifulplacesintougly(丑陋)ones.morecarspollutearethrowingawaypublicplacesTheearthisgettingworsebecauseofpollution.airpollutionwaterpollutionnoisepollutionlandpollutionHelpsavetheearth!Wemustthinkofbetterwaystosaveourearthinthefuture.2dRole-playtheconversation.WhatareJasonandSusan'sideasforsolvingtheseseriousproblems?Read2dandcompletethechart.PollutionWaystosolvetheproblemairpollutionwastepollutiontakethebus,subwayorrideabikeinsteadofdrivingbringabagtogoshoppingnevertakewooden(木頭的)chopsticksorplasticforkswhenbuyingtakeawayfoodthrowrubbishinthebinsandkeeppublicplacescleanandbeautiful2dInterviewer:JasonandSusan,whatareyourideasforsolvingtheseproblems?Jason:Well,tocutdownairpollution,weshouldtakethebusorsubway

insteadofdriving.Susan:Yeah,orrideabike.Thereareotheradvantages(優(yōu)點)ofbikeriding.It’sgoodforhealthanditdoesn’tcost(花費)anything!Interviewer:Greatideas!Whataboutwastepollution?Susan:Mmm,Ithinksimplethingslikebringingabagtogoshoppingcan

help.Istarteddoingthatayearago.Jason:Me,too.Also,Inevertakewoodenchopsticksorplastic(塑料)forks

whenIbuytakeaway(外賣食物)food.Iusetheonesathome.Susan:Andremembertothrowrubbishinthebinsandkeeppublicplacescleanandbeautifulforeveryone.Interviewer:Sotogether,ouractionscanmakeadifferenceandleadtoa

betterfuture!Languagepoint1.Well,tocutdownairpollution,weshouldtakethebusorsubwayinsteadofdriving.cutdown:意為“減少”，還表示“砍倒”。工人們正在竭盡全力降低事故率。Theworkersaretryingtocutdowntheaccidentrate.我們村太多的樹遭到了砍伐。Toomanytreeshavebeencutdowninourvillage.含cut的常見短語：cutin：cutoff：cutout:cutdown：o....:cutup:插隊；插嘴切除；切斷減少；砍倒將....切成....切碎刪除()1.Treesusedtobe______forcookingbyvillagersinthe1970s.A.cutupB.cutdownC.cutoffD.cutin()2.Wemustdosomethingusefulto_______pollution.A.cutoffB.cutupC.cutdownD.cutin()3.Hetriedto_____onsmokingbutfailed.A.cutoffB.cutinC.cutupD.cutdownBCD(

)4.Greateffortshavebeenmadeto_______thegovernment'sexpenses(開支)tothecertainlevel.A.cutdown

B.cutin

C.cutout

D.cutoffA2.Thereareotheradvantagesofbikeriding.

advantage:意為“優(yōu)點；有利條件”

反義詞disadvantage騎自行車的好處和壞處各是什么？Whataretheadvantagesanddisadvantagesofbikeriding?take(good)advantageof....(充分)利用

政府充分利用了志愿者的善心去幫助有需要的人。Thegovernmenttakesgoodadvantageofthekindnessofvolunteerstohelppeopleinneed.3.It'sgoodforhealthanditdoesn'tcostanything!

cost:動詞，意為“花費”

名詞，意為“花費；價錢；成本”

這件大衣花費不多。Thiscoatdoesn'tcosttoomuch.我們老板想要降低成本。Ourbosswantstocutdownthecost.辨析：spend,cost,take,pay花費主語用法spendpaycosttake人人事或物事（it）（1）sbspend(s)money/time(in)doingsth

某人花費金錢/時間做某事（2）sbspend(s)money/timeonsth

某人花費金錢/時間在某物上（1）paysb

付款給某人（2）sbpay(s)moneyforsth某人花金錢在某物上（1）sthcost(s)sbmoney某物花了某人金錢（2）doingsthcost(s)sbmoney/time做某事花了某人金錢/時間ittakessbtime/moneytodosth

花費某人時間/金錢做某事【應用】2.用take,spend,pay或cost的適當形式填空(1)Thosenewcars________themlotsofmoney.(2)Mona________50yuanonthebooksjustnow.(3)Itusually_________meanhourtodomyhomework.(4)Youshould__________sometimepracticingyourpronunciation.(5)Mybrother________6,000yuanforthenewcomputeryesterday.costspenttakesspendpaid4.Sotogether,ouractionscanmakeadifferenceandleadtoabetterfuture!makeadifference(to…)表示(對……)產(chǎn)生影響或作用

學好英語會對你的前途有影響。LearningEnglishwellcanmakeadifferencetoyourfuture.

makenodifferenceto

對……沒有影響Exercise根據(jù)漢語意思完成英語句子。1.

房間里擠滿了人。發(fā)生什么事了？

Theroomwas__________________people.Whathappened?2.

你應該交個筆友，用英語給她寫信。

Youshouldmakeapenfriendand_______________herinEnglish.