人教版九年级英语：Unit 13 We are trying to save the earth!教案

Unit13We'retryingtosavetheearth!

教学目标：

话题Topic：环境保护(Protectingtheenvironment)

功能Functions：

能谈论环境污染和环境保护问题(Talkaboutpollutionandenvironmental

protection)

We'retryingtosavetheearth.

Theriverusedtobesoclean.

Theairisbadlypolluted.

Tocutdownairpollution,weshouldtakethebusorsubwayinsteadofdriving.

语法复习：Reviewofkeystructures

能正确区分和使用以下语法结构：现在进行时、usedto、被动语态、现在完成时、

情态动词等。

Wearetryingtosavetheearth.

Theriverusedtobesoclean.

Itwasconsideredthenicestriverintown.

Weshouldhelpsavethesharks.

词汇和常用表达Words&expressions

1.能正确使用下列词汇(Curriculumwords)

bottom,fisherman,coal,advantage,industry,law,gate,bottle,president,work,

metal,ugly,wooden,plastic,cruel,harmful,scientific,litter,cost,afford,recycle

2.能正确使用下列常用表达(Usefulexpressions)

beharmfulto,atthetopof,thefoodchain,takepartin,turnoff,payfor,takeaction,

throwaway,putsth.togooduse,pull...down,upsidedown,bringback

3.能认读下列词汇(Non-curriculumwords)

takeaway,bin,shark,fin,chain,ecosystem,reusable,transportation,napkin,

inspiration,iron,creativity

学习策略Strategies

1.借助文章标题和插图对阅读篇章内容进行合理的预测

2.能在阅读中借助上下文语境和构词特征猜测部分词汇的含义

文化知识Culture

了解环境污染情况问题和如何保护环境

SectionA1(la-2d)

Learningobjectives:

1.Tolearnandtalkaboutairpollution,wastepollutionandwaystosolvethe

problems.

2.Tolearntousethesentencepatterns.

usedto...butnow...

shoulddosth.

3.Tomasterkeywordsandphrases:

litter,bottom,fisherman,coal,ugly,advantage,cost,wooden,plastic,makea

difference,leadto,insteadof

I.Warmingup

Showthepicturestomakesomecomparisonandtellstudentstheearthispolluted

now.

Forexample:(1)Thefactoriesthatbumcoalpollutetheairwithalotofblacksmoke.

(2)Factoriesputwasteintotheriver.

(3)Peopleshouldthrowawaylitterinthebin.

(4)Therearemorecarsontheroad.

II.Workonla

Herearesomewordsrelatedtodifferentkindsofpollution.Writethemintheboxbelow.

Thenaddmorewords.

loudmusiccarsrubbishplaneslitteringships

factoriessmokingbuildinghousesmobilephones

noisepollutionairpollutionwaterpollution

Keys:noisepollution:loudmusic,planes,buildinghouses,mobilephones,(machines

crowds,vehicles)

airpollution:cars,factories,smoking,buildinghouses,waterpollution,

(burning,powerplants,nuclearwastedisposal)

waterpollution:rubbish,littering,ships,factories,(sewage,industrialwaste,

pesticides)

III.Listening

1.Workonlb.Listenandcompletethesentences.

Whatwastheproblem?Theriverwas______________.Eventhebottomof

theriverwasfullof_____________.Therewereno

more_____________forfishermentocatch.

Whatcausedtheproblem?Peoplearethrowing_____________intotheriver.

Factoriesareputting_____________intotheriver.

HowshouldtheproblembeWeshouldwritetothe_____________andaskthem

solved?to_____________thefactories.Everyoneshould

helpto_____________theriver.

Keys:reallydirty,rubbish,fish

litter,waste

government,closedown,cleanup

2.Listenagainandanswerthefollowingquestions.

1)WhatdoesTonywanttodolaterthisafternoon?

HewantstogoswimmingwithMarkintheriverlaterthisafternoon.

2)Howwastheriverinthepast?

Itusedtobesoclean.Ithasbeenthenicestriverinthistown.

3.Presentthetapescriptandletstudentsreadaftertheaudio.

usedtodosth.“过去常常……”表示过去习惯性的动作但如今已不存在。

playapartindoingsth.“参与做某事；在做某事上起作用”。

IV.Practice

1.Role-playtheconversationin1c.

Mark:Theriverwasdirty.Eventhebottomoftheriverwasfullofrubbish.

Tony:Butitusedtobesoclean!

Mark:Yes,butpeoplearethrowinglitterintotheriver.

Tony:Everyoneinthistownshouldplayapartincleaningitup!

2.Makeconversationsaboutkindsofpollutioninla.

3.Workingroups.Eachgroupchooseatopicin2a.Saythewordsorphrasesrelatedto

thetopiconebyone.

VListening

1.Workon2a.Listentotheinterview.CirclethekindsofpollutionthatJasonandSusan

talkabout.

A.landpollutionB.airpollution

C.noisepollutionD.waterpollution

Keys:AB

2.Workon2b.Listenagainandcompletethesentences.

1)Theairisbadlypollutedbecausethereareontheroadthesedays.

2)Factoriesthatburncoalalsotheairwithalotofblacksmoke.

3)Thereisalsotoomuchrubbishandwaste.Peoplethingsevery

day.

4)Peoplearealsolitteringinlikeparks.Thisisturningbeautiful

placesintougly(丑陋)ones.

Keys:1)morecars2)pollute3)arethrowingaway4)publicplaces

Thinkabout:Whatelsecancausethetwokindsofpollutioninlife?

VI.Practice(Workon2c)

Usetheinformationin2aand2btorole-playconversationsbetweenJasonandSusan.

Jason:Theairhasbecomereallypollutedaroundhere.Tmgettingveryworried.

Susan:Yes,Iusedtobeabletoseestarsinthesky.

Jason:Theproblemisthat...

VII.Discussion

Askstudentstodiscusstheirideasforsolvingtheairpollution/wastepollutionproblem.

VIII.Workon2d

1.Read2dandcompletethechart.

ProblemsSolvingproblems

airpollutiontakethebus,subwayorrideabikeinsteadofdriving

wastepollutionbringabagtogoshopping

nevertakewoodenchopsticksorplasticforkswhenbuying

takeawayfood

throwrubbishinthebins

IX.Languagepoints

1.We'retryingtosavetheearth!我们正在竭尽全力拯救地球！

trytodo=tryone'sbesttodo尽力去做某事

【语境应用】翻译句子

我们将努力在一周内完成这项工作。

We'lltrytofinishtheworkinaweek.

【拓展】try相关短语：

trydoingsth.试着做某事

tryon试穿

tryout尝试；试验；试试

【语境应用】用try短语的适当形式填空。

1)Iwenttothetailor5stomynewsuit.

2)Lefsyourmethod.Itseemsverygood.

3)IthinkyoushouldtoimproveyourEnglish.

4)Letmethestory.让我试着讲一讲这个故事吧。

Keys:tryon,tryout,tryyourbest,trytelling

2.Tocutdownairpollution,weshouldtakethebusorsubwayinsteadofdriving.

为了减少空气污染，我们应该乘公共汽车或地铁而不是开车。

cutdown砍倒；消减，减少使用

e.g.Youspendmorethanyourincome.Canyoutrytocutdown?

你入不敷出了，可以减少开支吗？

Manybigtreesalongtheroadhavebeencutdownforbuildinghouses.

路旁的许多大树都被砍掉建房了。

拓展：cutoff切断，停掉；中断……的通话，打断；使分离

cutup切碎

【语境应用】将所给英语句子翻译成汉语。

1)Pleasecutupthemeatbeforeyoudosomecooking.

在你做饭前请把肉切碎。

2)Theoilsupplywascutoffinthiscountrylastmonth.

上个月这个国家的石油供应被切断了。

3)Hecutdownoncoffeeandcigarettes.

他减少了喝咖啡和吸烟。

3.Ifsgoodforhealthanditdoesn'tcostanything!

它对健康有好处，而且不花一分钱！

costV.花费；使付出，指花费金钱，主语通常是物。

costv.(cost,cost)花费；使付出

常用结构：sth.cost(s)sb.somemoney

e.g.ThenewshirtcostMr.Wang200yuan.

王先生花了200元买了一件新衬衫。

Howmuchdoesthenewcomputercost?

新电脑花了多少钱？

辨析pay,take,cost&spend

花费时间，常用于ittakessb.sometimetodo

take

sth.这一句型中，其中it作形式主语

花费时间和金钱，主语通常是人，常用搭配：

spend

spend...onsth.和spend...(in)doingsth.

pay花费金钱，主语通常是人，常用搭配：payfor

表示花费金钱或值(多少)钱，主语通常是物，

cost

常用搭配：sth,cost(s)(sb.)somemoney.

【语境应用】根据句意用take,spend,pay或cost的适当形式填空。

1)Thatnewcarthemlotsofmoney.

2)Mona50yuanonthebooksjustnow.

3）Itusuallymeanhourtodomyhomework.

4）Youshouldsometimepractisingyourpronunciation.

5）Mybrother3,000yuanforthenewcomputeryesterday.

Keys:cost；spend；takes；spend；paid

4.Sotogether,ouractionscanmakeadifferenceandleadtoabetterfuture!

因此，我们齐心协力就能带来变化，创造更加美好的未来！

makeadifference（to...）（对...）产生重大影响或作用

【拓展】

makenodifferenceto对...没有影响

makesomedifferenceto对...有一些影响

makeabigdifferenceto对...有很大影响

e.g.Itmakesnodifferencewhetheryouacceptorrefusehim.

Theseaairhasmadesomedifferencetoherhealth.

Alittlethingthatmakesabigdifference.

【语境应用】根据汉语意思完成下列句子（每空一词）。

1）你是去是留对我都无所谓。

Itdoesn'ttomewhetheryougoorstay.

2）学习驾驶时，若有一位好教练指导，效果则大不相同。

Whenyou'relearningtodrive,havingagoodteachermakes

Keys:makeanydifference,abigdifference

leadto导致

e.g.Eatingtoomuchsugarcanleadtohealthproblems.

【链接】

leadsb.to...带领某人去...

e.g.HispetdogLuckyledustohishousejustnow.

【语境应用】根据汉语意思完成英语句子，每空一词。

1）工作太多、休息太少常常导致疾病。

Toomuchworkandtoolittlerestoftenillness.

2）昨天那个男孩带领他们去了那家超市。

Theboy_________________thesupermarketyesterday.

Keys:leadto,ledthemto

X.Summary

writeto...给……写信

thebottomoftheriver河底

throwlitterintotheriver往河里扔垃圾

cleanup...把……打扫干净

land/air/noise/waterpollution土地/空气/噪音/水污染

turn...into...把……变成……

cutdownairpollution减少空气污染

insteadof代替

begoodfor...对……有好处

takeawayfood外卖食品

keeppublicplacescleanandbeautiful保持公共场所干净美观

makeadifference影响；有作用

leadto带来；导致

XLExercises

I.根据语境及所给首字母提示，补全所缺单词。

1.Thisdictionarycme228yuan,butitwasworthit.

2.Thisstreetiscleanedeveryday.Youcanhardlyfind1whenyouwalk

alongit.

3.Thismethodhastwoa:first,itischeaper;andsecond,itisquicker.

4.Peopleareencouragedtotaketheirownbagsinsteadofbuying

2bagswhenshopping.

5.Thewaterisnotverydeephere.Icantouchtheb.

II.根据汉语意思完成英语句子，每空一词。

1.房间里挤满了人。发生什么事了？

Theroomwaspeople.Whathappened?

2.你应该交个笔友，用英语给她写信。

YoushouldmakeapenfriendandherinEnglish.

3.转学对我的一生有影响。

Transformingfromoneschooltoanother_____________________________________

tomylife.

4.Susanseldombuys(外卖食物).Mostofthetimeshecooksat

home.

5.Tohelp(减少空气污染),Jasonridesabiketo

workinsteadofdriving.

6.Manypeoplefearthattheuseofrobotsinfactorieswill______________(导致)

jobloss.

Homework

思考校园的不环保现象有哪些。写信给学校的校长，信内列出校园不环保的现

象及相应的解决建议。100字左右。

SectionA2(3a-3b)

Learningobjectives

1.Tounderstandthepassageabouttheendangeredanimal-sharks.

2.Tohavetheawarenessofprotectingthesharksandrespectingnature.

3.Tolearnsomewordsandexpressions.

I.Warmingup

1.Therearesomeanimalswhichareendangered.Makealistoftheendangeredanimals

inChina.

2.Discussthefollowingquestions.

1)MakealistoftheprotectedanimalsinChina.

2)Whatdoyouknowaboutsharks?

3)Doyouthinksharksareendangered?Why?

4)Whatdoyouthinkmighthavecauseda