Unit3 SectionA 2a-2d.ppt

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1、The earth is polluted.air pollutionThefactoriesthatburncoalpollutetheairwithalotofblacksmoke.n.煤炭煤炭Factoriesputwasteintotheriver.water pollutionnoise pollutionTherearemorecarsontheroad.2aListen to the interview.Circle the kinds of pollution that Jason and Susan talk about.A.landpollutionB.airpolluti

2、onC.noisepollutionD.waterpollution2bListen again and complete the sentences.1.Theairisbadlypollutedbecausethereare_ontheroadthesedays.2.Factoriesthatburncoalalso_theairwithalotofblacksmoke.morecarspollute3.Thereisalsotoomuchrubbishandwaste.People_thingseveryday.4.Peoplearealsolitteringin_likeparks.T

3、hisisturningbeautifulplacesintougly(丑丑陋陋)ones.arethrowingawaypublicplacesCompletethesentencesaccordingtothedialogue.1.I_abletoseestarsinthesky,butnowIcantseethemclearly.2.Theair_really_aroundthere.3.Peoplearealso_inthepublicplaces.4.Thefactoriesthatburn_also_theairwithalotofblacksmoke.usedtobehasbec

4、omepollutedlitteringcoalpolluteUse the information in 2a and 2b to role-play conversations between Jason and Susan.2cTheairhasbecomereallypollutedaroundhere.Imgettingveryworried.Yes,Iusedtobeabletoseestarsinthesky.TheproblemisthatWhat should we do to save the earth?Turn off the lights when you leave

5、 a room.stop riding in carsrecycle books and paper2dRead 2d and complete the chart.PollutionWaystosolvetheproblemairpollutionwastepollutiontakethebus,subwayorrideabikeinsteadofdrivingbringabagtogoshoppingnevertakewooden(木头的木头的)chopsticksorplasticforkswhenbuyingtakeawayfoodthrowrubbishinthebinsJason

6、and Susan,what are your ideas for solving these problems?Yeah,orrideabike.Thereareotheradvantages(优点优点)ofbikeriding.Itsgoodforhealthanditdoesntcost(花费花费)anything!Well,tocutdownairpollution,weshouldtakethebusorsubwayinsteadofdriving.Great ideas!What about waste pollution?Me,too.Also,Inevertakewoodenc

7、hopsticksorplastic(塑料塑料)forkswhenIbuytakeaway(外卖食物外卖食物)food.Iusetheonesathome.Mmm,Ithinksimplethingslikebringingabagtogoshoppingcanhelp.Istarteddoingthatayearago.Andremembertothrowrubbishinthebinsandkeeppublicplacescleanandbeautifulforeveryone.So together,our actions can make a difference and lead t

8、o a better future!1.Itsgoodforhealthanditdoesntcostanything!costv.花费；使付出花费；使付出指花费金钱，主语通常是物。指花费金钱，主语通常是物。cost的过去式的过去式和过去分词均为和过去分词均为cost。e.g.ThenewshirtcostMrWang200yuan.王先生花了王先生花了200元买了新衬衫。元买了新衬衫。Howmuchdoesthenewcomputercost?新电脑花了多少钱？新电脑花了多少钱？take,spend,pay&costtake，spend，pay和和cost都可以表示都可以表示“花花费费”，但

9、它们的用法各有不同。，但它们的用法各有不同。1)take多表示花费时间，常用于多表示花费时间，常用于ittakessb.sometimetodosth.这一句型中，这一句型中，其中其中it作形式主语。作形式主语。e.g.Itusuallytakesme40minutestocookthedinner.2)spend多表示花费时间和金钱，主语通多表示花费时间和金钱，主语通常是人，常用于常是人，常用于sb.spend(s)sometime/moneyonsth.和和sb.spend(s)sometime/money(in)doingsth.两种句型。两种句型。e.g.Davidspent2,000

10、yuan onthenewmachine.Myfatherspendsanhour(in)readingthenewspapereveryday.3)pay多表示花费金钱，主语通常是人，多表示花费金钱，主语通常是人，常用于常用于sb.pay(s)somemoneyforsth.句句型。型。e.g.Tommypaid20yuanforhisbreakfastyesterday.4)cost多表示花费金钱，主语通常是物，多表示花费金钱，主语通常是物，常用于常用于sth.cost(s)(sb.)somemoney.句句型。型。e.g.ThenewdresscostLinda80yuan.根据句意用根

11、据句意用take,spend,pay或或cost的适当的适当形式填空。形式填空。1.Thatnewcar_themlotsofmoney.2.Mona_50yuanonthebooksjustnow.3.Itusually_meanhourtodomyhomework.costspenttakes4.Youshould_sometimepractisingyourpronunciation.5.Mybrother_3,000yuanforthenewcomputeryesterday.spendpaid2.Sotogether,ouractionscanmakeadifferenceandle

12、adtoabetterfuture!makeadifference(to)表示表示(对对)产生影响或作用产生影响或作用e.g.LearningEnglishwellcanmakeadifferencetoyourfuture.学好英语会对你的前途有影响。学好英语会对你的前途有影响。(1)那场雨没对运动会造成重大影响。那场雨没对运动会造成重大影响。Thatraindidnt_thesportingmeeting.(2)我认为父母说的话会对孩子们有一些影我认为父母说的话会对孩子们有一些影响。响。Ithinkwhatparentssaywill_theirchildren.makeadifferen

13、cetomakesomedifferenceto辨析：instead of与insteadinstead of 介词短语，其后可跟名词、代词或v.-ing形式 We can take a bus to work instead of driving.我们可以坐公交车而不是开车去上班。Instead 副词，常位于句末，位于句首时，其后有逗号 He didnt reply.Instead,he left the room.他没回答，反而离开了房间。()1.How much is the ticket to Central Park?A one-way ticket_$40,and you can_

14、 another$20 for a round-trip.A.costs;pay B.cost;spend C.pay;spend D.spends;pay()2.We went to climb mountains _going shopping.A.instead B.instead of C.prefer to D.take the place（）3.Maria watch TV,but now she listening to music.A.used to;is used to B.is used to;used toC.used to;used to D.is used to;us

15、ed to（）4.Everyone should play a part in the environment.A.protect B.protects C.protecting D.protected（）5.We should be grateful(心心存感激的存感激的)for whats right instead of_about whats wrong.A.complain B.complains C.complaining D.complainedThe earth is badly polluted.Please make a poster and think of what we can do.1.Copy the new words and remember them.2.Read the listening materials of 1b,2a.