Unit 13 We are trying to save the earth教案Word下载.docx

Unit 13 We are trying to save the earth教案Word下载.docx

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2.教学难点：

能正确运用现在进行时，现在完成时，被动语态，情态动词和usedto句型。

三、教学步骤:

SectionA1（1a-2d）

I.Presentation

Showthepictureoftheearthandtellstudentstheearthispollutednow.

Forexample:

（1）Thefactoriesthatburncoalpollutetheairwithalotofblacksmoke.

（2）Factoriesputwasteintotheriver.

（3）Peopleshouldthrowawaylitterinthebin.

（4）Therearemorecarsontheroad.

II.Learning

Herearesomewordsrelatedtodifferentkindsofpollution.Writethemintheboxbelow.Thenaddmorewords.

loudmusiccarsrubbishplaneslitteringshipsfactoriessmokingbuildinghousesmobilephones

noisepollutionairpollutionwaterpollution

____________________________________

Keys 

:

noisepollutionloudmusicplanesmobilephonesbuildinghouses

airpollutionfactoriessmokingcarsbuildinghouses

waterpollutionshipsrubbishlitteringfactories

III.Listening

1.1bListenandcompletethesentences.

Whatwastheproblem?

Theriverwas_____________.Eventhebottom（底部）oftheriverwasfullof________.Therewerenomore______forfishermen（渔民）tocatch.

Whatcausedtheproblem?

Peoplearethrowing_______intotheriver.Factoriesareputting______intotheriver.

Howshouldtheproblembesolved?

Weshouldwritetothe____________andaskthemto___________thefactories.Everyoneshouldhelpto__________theriver.

Keys:

reallydirtyrubbishfishlitterwastegovernment

closedowncleanup

2.Listenagainandcheck（√）thesentencesyouhear.

1）Wecouldgofishingintheriver.

2）Theriverwasreallydirty.

3）Theriverhasalwaysbeenthenicestriverinthistown.

4）Weshouldasktheteachersforhelp.

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IV.Practice

1.Role-playtheconversationin1c.

Mark:

Theriverwasdirty.Eventhebottomoftheriverwasfullofrubbish.

Tony:

Butitusedtobesoclean!

Yes,butpeoplearethrowinglitterintotheriver.

Everyoneinthistownshouldplayapartincleaningitup!

2.Makeconversationsusingthepollutionin1a.

A:

Theriverhasalwaysbeenthenicestriverinthistown.

B:

Yes,itusedtobesoclean.

ButIwastherelastweekendandtheriverwasreallydirty.

Whatcausedtheproblem?

Peoplearethrowinglitterintotheriver.

Whatshouldwedo?

Factoriesarealsoputtingwasteintotheriver.

Yes,everyoneinthistownshouldplayapart.

Weshouldwritetothegovernmentandaskthemtoclosedownthefactories.

Whatelsecanwedo?

Everyoneshouldhelptocleanuptheriver.

V.Languagepoints

1.We’retryingtosavetheearth!

我们正在竭尽全力拯救地球!

trytodo=tryone’sbesttodo努力去做某事。

e.g.Everystudentshouldtrytostudyhardinordertostudyinauniversity.

为了进入大学学习，每个学生都应该努力学习。

2.Herearesomewordsrelatedtodifferentkindsofpollution.

berelatedto与…有关

e.g. 

Iamnot 

related 

to 

himinanyway.我和他无任何关系。

3.Everyoneinthistownshouldplayapartincleaningitup!

playapartin在……方面起作用

e.g.Agooddietplaysalargepartinhelpingpeoplelivelonger.

健康的饮食在帮助人们长寿方面起着非常大的作用。

playapart在……中扮演角色

e.g.HewasinvitedtoplayapartinthisTVplay.

他被邀请参加这个电视剧的演出。

4.Eventhebottomoftheriverwasfullofrubbish.

litter和rubbish都可指“垃圾”，用作不可数名词。

rubbish指“没用的东西（被扔或将要丢弃的无用的东西）”不可回收。

litter指“（室内或公共场所）乱扔的废物（纸屑、不要的包装纸、废瓶等）”还可回收

e.g.Throwtherubbishout.把垃圾扔出去。

　　Theroomisfullofrubbish.房间里堆满了垃圾。

　　Pickupyourlitterafterapicnic.野餐后将废弃物收拾好。

VI.Listening

1.2aListentotheinterview.CirclethekindsofpollutionthatJasonandSusantalkabout.

A.landpollutionB.airpollution

C.noisepollutionD.waterpollution

BA

2.2bListenagainandcompletethesentences.

1）Theairisbadlypollutedbecausethereare___________ontheroadthesedays.

2）Factoriesthatburncoalalso________theairwithalotofblacksmoke.

3）Thereisalsotoomuchrubbishandwaste.People_________________thingseveryday.

4）Peoplearealsolitteringin______________likeparks.Thisisturningbeautifulplacesintougly（丑陋）ones.

morecarspollutearethrowingawaypublicplaces

3.Listenandanswerthequestions.

1）Whoistheinterviewertalkingto?

2）Whataretheytalking?

3）Whatotherproblemsdotheysee?

SusanandJason.

Theenvironmentalproblems.

There’stoomuchrubbishandwasteinthestreets.

VII.Practice（2c）

Usetheinformationin2aand2btorole-playconversationsbetweenJasonandSusan.

Jason:

Theairhasbecomereallypollutedaroundhere.I’mgettingveryworried.

Susan:

Yes,Iusedtobeabletoseestarsinthesky.

Theproblemisthat…

VIII.Discussion

Askstudentswhatweshoulddotosavetheearth.Helpstudentsanswer,turnoffthe

lightswhenyouleavearoom;

stopridingincars;

stopusingpapertowelsornapkins;

recyclebooksandpaper.

IX.Reading

1.Read2dandcompletethechart.

Problems

Solvingproblems

airpollution

wastepollution

wooden（木头的）chopsticksorplasticforks

rubbish

2.Role-playtheconversation.

Interviewer:

JasonandSusan,whatareyourideasforsolvingtheseproblems?

Well,tocutdownairpollution,weshouldtakethebusorsubwayinsteadofdriving.

Yeah,orrideabike.Thereareotheradvantages（优点）ofbikeriding.It’sgoodforhealthanditdoesn’tcost（花费）anything!

Greatideas!

Whataboutwastepollution?

Mmm,Ithinksimplethingslikebringingabagtogoshoppingcanhelp.Istarteddoingthatayearago.

Me,too.Also,Inevertakewoodenchopsticksorplastic（塑料）forkswhenIbuytakeaway（外卖食品）food.Iusetheonesathome.

Andremembertothrowrubbishinthebinsandkeeppublicplacescleanandbeautifulforeveryone.

Sotogether,ouractionscanmakeadifferenceandleadtoabetterfuture!

X.Summaryandlanguagepoints

1.Thisisturningbeautifulplacesintouglyones.

turn…into…把……变成……

e.g.Theicyrainseemedliketoturnintosnow.

渐渐地冻雨又变成雪花的模样。

2.It’sgoodforhealthanditdoesn’tcostanything!

costv.花费；

使付出

指花费金钱，主语通常是物。

cost的过去式和过去分词均为cost。

e.g.ThenewshirtcostMrWang200yuan.王先生花了200元买了新衬衫。

Howmuchdoesthenewcomputercost?

新电脑花了多少钱？

take,spend,pay&

cost

take，spend，pay和cost都可以表示“花费”，但它们的用法各有不同。

1）take多表示花费时间，常用于Ittakessb.sometimetodosth.这一句型中，其中it作形式主语。

e.g.Itusuallytakesme40minutestocookthedinner.

2）spend多表示花费时间和金钱，主语通常是人，常用于sb.spend（s）sometime/moneyonsth.和sb.spend（s）sometime/money（in）doingsth.两种句型。

e.g.Davidspent2,000yuanonthenewmachine.

Myfatherspendsanhour（in）watchingthenewsonTVeveryday.

3）pay多表示花费金钱，主语通常是人，常用于sb.pay（s）somemoneyforsth.句型。

e.g.Tommypaid20yuanforhisbreakfastyesterday.

4）cost多表示花费金钱，主语通常是物，常用于sth.cost（s）（sb.）somemoney.句型。

e.g.ThenewdresscostLinda88yuan.

根据句意用take,spend,pay或cost的适当形式填空。

1）Thatnewcar________ 

themlotsofmoney.

2）Mona__________50yuanonthebooksjustnow.

3）Itusually_______ 

meanhourtodomyhomework.

4）Youshould__________ 

sometimepractisingyourpronunciation.

5）Mybrother_______ 

6,000yuanforthenewcomputeryesterday.

Keyscost 

spent 

takesspendpaid

3.Sotogether,ouractionscanmakeadifferenceandleadtoabetterfuture!

makeadifference（to…）表示（对……）产生影响或作用

e.g.Doyouthinkhiswordswouldmakeanydifferencetothefinaldecision?

你认为他的话会对最后的决定产生影响吗？

ThenewteacheralwaysencourageslittleTom.Thishasmadeabigdifference

tohim.

新来的老师总是鼓励小汤姆，这对他影响很大。

XI.Exercises

用动词的适当形式填空。

1）We’retrying_______（save）theearth.

2）Thereusedto_____（be）cleanandbeautiful.

3）Therearetoomany______for________tocatch（fish）.

4）It’sbadforenvironmenttouse_________（wood）chopsticks.

tosavebefishfishermenwooden

XII.Thinkabout

Theearthisbadlypolluted.Pleasemakeaposterandthinkofwhatwecando.

XIII.Homework

1.Copythenewwordsandrememberthem.

2.Readthelisteningmaterialsof1b,2a.

SectionA2（3a-3c）

I.Revision

（1）Role-play2d.

（2）TranslatethesesentencesintoEnglish.

①甚至是河底都满是垃圾。

②这个小镇上的每个人都应该参加打扫。

③骑自行车有其它的优点。

④我买外卖食品从来不拿木筷子和塑料叉子。

II.Leadin

（1）Teachertellsstudentstheearthisbadlypolluted.Whatshouldwedotosavetheearth?

Let’stakeaction.Forexample:

①Turnoffthelightswhenyouleavearoom;

②Takebusesinsteadofdrivingcars

Recyclebooksandpaper.

（2）Therearesomeanimalsareendangered.Weshoulddosomethingtoprotecttheanimalsandtheenvironment!

III.Discussion

（1）Haveyoueverseenashark?

（2）Whatdoyouknowaboutsharks?

IV.Reading

（1）Sharksareendangered,readthepassageandjudgethesentences.

①Shark’sfin（鱼鳍）soupisfamousandexpensiveallaroundtheworld.

②Wehavetokil