新人教版九年级英语下册Unit-13-Were-trying-to-save-the-earth!公开课课件

Period11a-2dWordsUnit13We’retryingtosavetheearth!SectionAObjectivesTotalkaboutairpollution,waterpollutionandsoundpollution.Tothinkaboutwaysofprotectingtheenvironment.Tolearnthenewwords:advantage,scientificLookatourearth!Endangeredanimals

DesertificationNaturaldisastersPollutionTheworld'sproblemsSeriouspollutionWeareharmingourplanetinsomanyways.伤害airpollutionnoisepollutionwaterpollutiontheearthsongbyMichaelJackson!!!Factoriespourdangerousgasesintotheair.AirpollutionCarsalsopourdangerousgasesintotheair.carssmokingSomepeoplesmokeinpublicplaces.NoisepollutionbuildinghousesloudmusicmobilephonesplanesWaterpollutionfactoriesrubbishlitteringshipsHelpsavetheearth

Wemustthinkofbetterwaytotreatourplanetinfuture.Youdrinkacanofcola.Whatdoyoudo?Ithrowawaycans.Irecyclecans.Youthrowawaythecans.That’sbadfortheEarth.Yourecyclethecans.That’sgoodfortheEarth.Therearealotofoldnewspapersatyourhome.Whatdoyoudo?Ithrowtheoldnewspapersaway.Irecycletheoldnewspapers.Youthrowoldnewspapersaway.Youwastepaper.That’sbadfortheEarth.Yourecycleoldnewspapers.Yousavepaper.That’sgoodfortheEarth.Yougoshopping.Whatdoyoudo?Iusealotofnewplasticbags.Iusemyownbag.Youusealotofnewplasticbags.That’sbadfortheearth.Youuseyourownbag.That’sgoodfortheEarth.Whenyouwriteonapieceofpaper,whatdoyoudo?Iwriteononesideonly.Iwriteonbothsides.Youusepaperononesideonly.That’sbadfortheEarth.Youusepaperonbothsides.That’sgoodfortheEarth.closedownthefactories;helptocleanuptheriver;

takethebusorsubway;rideabike;bringabagtogoshopping,throwrubbishinthecans;

turnoffthelightswhenyouleavearoom;usepaperorreusablebags;recyclebooksandpaper;turnofftheshowerwhenyouwashyourhair;don'tusenapkins;rethink,reuse,recycle......solutions

Herearesomewordsrelatedtodifferentkindsofpollution.Writethemintheboxbelow.Thenaddmorewords.loudmusiccarsrubbishplaneslitteringshipsfactoriessmokingbuildinghousesmobilephones1aNoisepollutionAirpollutionWaterpollutioncars,factories,smoking,buildinghouses(burning,powerplants,nuclearwastedisposal)Loudmusic,planes,buildinghouses,mobilephones(machines,crowds)rubbish,littering,ships,factories(sewage,industrialwaste,pesticides)Listenandcompletethesentences.whatwastheproblem?Theriverwas_________.eventhebottomoftheriverwasfullof________.therewerenomore_____forfishmentocatch.reallydirtyrubbishfish1bwhatcausedtheproblem?peoplearethrowing_____intotheriver.Factoriesareputting_______intotheriver.Howshouldtheproblembesolved?Weshouldwritetothe________andaskthemto___________thefactories.everyoneshouldhelp________totheriver.litterwastegovernmentclosedowncleanupRole-playtheconversationTheriverwasdirty.Eventhebottomoftheriverwasfullofrubbish.Butitusedtobesoclean!1cYes,butpeoplearethrowinglitterintotheriver.Everyoneinthistownshouldplayapartincleaningitup!PracticeMakeconversationsusingthepollutionin1a.Theriverhasalwaysbeenthenicestriverinthistown.Yes,itusedtobesoclean.ButIwastherelastweekendandtheriverwasreallydirty.Whatcausedtheproblem?Factoriesarealsoputtingwasteintotheriver.Peoplearethrowinglitterintotheriver.Whatshouldwedo?Yes,everyoneinthistownshouldplayapart.Weshouldwritetothegovernmentandaskthemtoclosedownthefactories.Whatelsecanwedo?Everyoneshouldhelptocleanuptheriver.1.We’retryingtosavetheearth!

我们正在竭尽全力拯救地球!

trytodo=tryone’sbesttodo

努力去做某事。

Everystudentshouldtrytostudyhardinordertostudyinauniversity.

为了进入大学学习，每个学生都应该努力学习。Languagepoints2.Herearesomewordsrelatedtodifferentkindsofpollution.berelatedto与…有关

Iamnot

related

to

himinanyway.

我和他无任何关系。

3.Everyoneinthistownshouldplayapart

incleaningitup!

playapartin在……方面起作用

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HewasinvitedtoplayapartinthisTVplay.他被邀请参加这个电视剧的演出。4.Eventhebottomoftheriverwasfullofrubbish.Yes,butpeoplearethrowinglitterintotheriver.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。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。

Listentotheinterview.CirclethekindsofpollutionthatJasonandSusantalkabout.

A.landpollutionB.airpollutionC.noisepollutionD.waterpollution2a1.Theairisbadlypollutedbecausethereare__________ontheroadthesedays.2.Factoriesthatburncoalalso________theairwithalotofblacksmoke.3.Thereisalsotoomuchrubbishandwaste.People___________________thingsawayeveryday.4.Peoplearealsolitteringin____________likeparks.Thisturnsbeautifulparksintouglyplaces.morecarpollutearethrowingawaypublicplacesListenagainandcompletethesentences.

2bListenandanswerthequestions.1.Whoistheinterviewertalkingto?2.Whataretheytalkingabout?3.Whatotherproblemsdotheysee?SusanandJason.Theenvironmentalproblems.There’stoomuchrubbishandwasteinthestreets.Theairhasbecomereallypollutedaroundhere.I’mgettingveryworried.Yes,Iusedtobeabletoseestarsinthesky.Theproblemisthat…2c

Usetheinformationin2aand2btorole-playconversationsbetweenJasonandSusan.Read2dandcompletethechart.ProblemsSolvingproblemsairpollutionwastepollutionwooden(木头的)chopsticksorplasticforksrubbishtakethebus,subwayorrideabikeinsteadofdriving.bringabagtogoshopping.usechopsticksorforksathome.throwrubbishinthebins.2dRole-playtheconversationJasonandSusan,whatareyourideasforsolvingtheseproblems?Yeah,orrideabike.Thereareotheradvantages

(优点)ofbikeriding.It’sgoodforhealthanditdoesn’tcost

(花费)anything!Well,tocutdownairpollution,weshouldtakethebusorsubwayinsteadofdriving.Greatideas!Whataboutwastepollution?Me,too.Also,Inevertakewoodenchopsticksorplastic

(塑料)forkswhenIbuytakeaway(外卖食品)food.Iusetheonesathome.Mmm,Ithinksimplethingslikebringingabagtogoshoppingcanhelp.Istarteddoingthatayearago.Andremembertothrowrubbishinthebinsandkeeppublicplacescleanandbeautifulforeveryone.Sotogether,ouractionscanmakeadifferenceandleadtoabetterfuture!辨析：turn,get与become(1)become

多指身份，职位等的变化，它强调变化过程已经完成，后面可以接名词或者形容词。

Hebecomesateacher.(2)get多用于口语，表示一种变化过程，强调的是“渐渐变化”后常接形容词的比较级形式。LanguagePoints

Inwinterthedaysgetshorter.

冬天白天渐渐变短。(3)turn

指的是在颜色和性质等方面与以前的完全不同，强调变化的结果。

leavesturnedbrowninthemountains.

山里的树叶已经变成了棕色。：Hermother______angrywhensheheardthenews.It's________darkeranddarkeroutside.Themilkhas______bad.练习becamegettingturned

cutdown,意为"减少"；是“动词+副词”结构的短语，后面所带的宾语为名词时，宾语可以位于down的前面或后面；为代词时只能位于down前面。

You'dbettercutthearticledowntoabout2000words.cut后接off,into,up,in的不同：拓展cutoff切断；切除cutinto把...切成...cutup切碎cutin插队花费主语表示内容spend人宾语可以是钱，精力，时间等。cost物或事后接life，money，health，time等，侧重与花费的代价take事或人说明事情完成花费了...辨析：spend,cost,take,pay花费主语表示内容pay人"支付"作为及物动词，可以是paysb或paysomemoney；作为不及物动词，形式为payfor。for表支付的原因。1.He___gooutwithhisparents,butnowhe_____stayathomealone.A.useto;isusedtoB.isusedto;usedtoC.useto;usedtoD.isusedto;isusedto2.Theinterestingbook___me10yuan.A.tookB.paidC.spendD.costChoosethebestanswer.3.Wemustdosomethingusefulto___pollution.A.cutoffB.cutupC.cutdownD.cutin4.Smokingcan___lungcancer.you'dbettergiveitup.A．workonB．leadtoC．takeawayD．putout5.--Whatarethe___ofbikeriding?--Itcanhelpcutdownairpollution.A．advantageB．reasonsC．resultsD．ideas用方框中所给词的适当形式填空。1.Don'tthrow_______(垃圾)everywhere.2.Inwinter,manypeopleburn______(煤)tokeepwarm.3.Thepolicefoundabodyatthe________(底部)ofthelake.4.The______(花费)oflivinginbigcitiesisveryhigh.5.Hekeepsarabbitinabig_______(木制的)box.costwooden,coal,bottom,littercostwoodencoalbottomlitterMakeaposter!Theearthisbadlypolluted.Pleasemakeaposterandthinkofwhatwecando.Savetheearth!Reviewthenewwordsandexpressions.Practicetheconversationin2d.Period23a-3cSectionAUnit13We’retryingtosavetheearth.RevisionJasonandSusan,whatareyourideasforsolvingtheseproblems?Role-play2d.Well,tocutdownairpollution,weshouldtakethebusorsubwayinsteadofdriving.Yeah,orrideabike.

Thereareotheradvantagesofbikeriding.It’sgoodforhealthanditdoesn’tcostanything.Greatideas!Whataboutwastepollution?Mmm,Ithinksimplethingslikebringingabagtogoshoppingcanhelp.Istarteddoingthatayearago.Me,too.Also,InevertakewoodenchopsticksorplasticforkswhenIbuytakeawayfood.Iusetheonesathome.Andremembertothrowrubbishinthebinsandkeeppublicplacescleanandbeautifulforeveryone.Sotogether,ouractionscanmakeadifferenceandleadtoabetterfuture!TranslatethesesentencesintoEnglish.1.甚至是河底都满是垃圾。2.这个镇上的每个人都应该参与清扫。Eventhebottomoftheriverwasfullofrubbish.Everyoneinthistownshouldplayapartincleaningitup.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。Thereareotheradvantagesofbikeriding.InevertakewoodenchopsticksorplasticforkswhenIbuytakeawayfood.Theearthisbadlypolluted.Whatshouldwedotosavetheearth?WarmingupLet’stakeaction(采取行动)Turnoffthelightswhenyouleavearoom.Recyclebooksandpaper.Takebusesinsteadofdrivingcars.Therearesomeanimalsareendangered.Weshoulddosomethingtoprotecttheanimalsandtheenvironment!

Savetheearth!Savetheanimals!Thezoosprovidehomesformanyendangeredanimals.1.Haveyoueverseenashark（鲨鱼）?2.Whatdoyouknowaboutsharks?Discusswithyourpartner:

Readthepassageaboutsharks

andcompletethefactsheetbelow.3aManyhaveheardofshark’sfinsoup.ThisfamousandexpensivedishisespeciallypopularinsouthernChina.Butdoyourealizethatyou’rekillingawholesharkeachtimeyouenjoyabowlofshark’sfinsoup?Whenpeoplecatchsharks,theycutofftheirfinsandthrowthesharkbackintotheocean.

Withoutafin,asharkcannolongerswimandslowlydies.Thismethodisnotonlycruel,butalsoharmfultotheenvironment.Sharksareatthetopofthefoodchainintheocean’secosystem.Iftheirnumbersdroptoolow,itwillbringdangertoalloceanlife.Manybelievethatsharkscanneverbeendangeredbecausetheyarethestrongestintheirfoodchain.Butinfact,around70millionsharksarecaughtandtradedinthisindustryeveryyear.Thenumbersofsomekindsofsharkshavefallenbyover90percentinthelast20to30years.

Environmentalprotectiongroupsaroundtheworld,suchasWildAidandtheWWF,areteachingthepublicabout“finning”.Theyhaveevenaskedgovernmentstodeveloplawstostopthesaleofshark’sfins.Sofar,noscientificstudieshaveshownthatshark’sfinsaregoodforhealth,sowhyeatthem?Helpsavethesharks!Sharksareendangered,readthepassageandjudgethesentences.Readthefirstparagraph1.Shark’sfin（鱼鳍）soupisfamousandexpensiveallaroundtheworld.2.Wehavetokillawholesharktogetabowlofshark’sfinsoup.×√Readthesecondparagraph1.Peoplecutoffsharks’finsandthrowthesharksbackintotheocean.2.Sharksareinthebottomofthefoodchainintheocean’secosystem.√×n.

生态系统食物链Readthethirdparagraph1.WildAidandtheWWFareenvironmentalprotectiongroupsinChina.2.Shark’sfinsaregoodforhealth.××WheresharkfinsoupispopularNumberofsharkscaughtandtradedeveryyearHowmuchthenumbersofsomekindsofsharkshavefalleninthelast20to30yearsTwoenvironmentalgroupswhichareagainst“finning”southernChina70millionover90percentWildAidandtheWWFLet'sdothistoreviewthetext!!!Somepeopleliketoeatshark'sfinsoup,especiallyin_______China.Butgettingtheshark'sfinisvery_____.Whenpeoplecatchsharks,they________theirfinsandthrowthesharksintotheocean.Thesharkslowlydiesbecauseitcan't_____withoutthefin.Anditisalso______toenvironment.Sharksareatthe____ofthefoodchain.Ifthenumberofsharksdropstoolow,itwillbreakthebalanceofnuture.Pleasesaynotoeatingthesharkfinsoup,andtakeactiontosavethesharks!

southerncruelcutoff

swimharmfultopLet’slearnsomeLanguagepoints1.Asharkcannolongerswimandslowlydies.鲨鱼不能再游泳然后慢慢死掉。nolonger意思是“不再”I’mnolongerastudent.我不再是个学生了。有两个短语和nolonger同义，即not…anylonger和not…anymore，但他们侧重的方面不同。Languagepointsnolonger和not…anylonger侧重时间。

e.g.Henolongerliveshere.=Hedoesn’tlivehereanylonger.

他不在这儿居住了。(一个时间以前他住在这儿，过了这个时间，他就离开了。)not…anymore侧重程度和数量e.g.Youcandrinknomore.=Youcan’tdrinkanymore.

你不能再喝了。(喝酒的量到了一定程度，不能再继续下去了。)2.Thismethodisnotonlycruel,butalso

harmfultotheenvironment.

这种方法不但残忍而且对环境有害。notonly…butalso…用于连接两个表示并列关系的成分，着重强调后者，其意为“不仅……而且……”;其中的also有时可以省略。e.g.Shenotonlyplayswell,butalsowritesmusic.

她不但很会演奏，而且还会作曲。

Notonlymenbutalsowomenwerechosen.

不仅仅是男的，女的也有被选中的。若连接两个成分作主语，其谓语通常与靠近的主语保持一致。e.g.Notonlyyoubutalsohehastoleave.

不只是你，他也得离开。

notonly放在句首，后接句子时要用倒装结构。e.g.Notonly

hadthepoormanbeenfined,butalsohehadbeensenttoprison.

这个可怜的人不仅被罚款，而且还被送进了监狱。

beharmfulto对……有害e.g.Smokingisharmfultothehealth.

吸烟有害健康。

Playingcomputergamesmuchisharmfultostudents.

电脑游戏玩太多对学生有害。3.Sharksareatthetopofthefoodchainintheocean’secosystem.

鲨鱼位于海洋生物系统食物链的顶部。atthetopof

在……最高地位;用最高[最大]的(速度,声音等)e.g.Ilookedatthetopofhishead,hishairshinyandpartedsmoothly.

我看他的头顶,头发闪亮且平滑的分开。Heshoutedatthetopofhisvoiceinorderthathemightbeheard.他尽力大声叫喊,以便别人能听见。4.Iftheirnumbersdroptoolow,itwillbringdangertoalloceanlife.

如果它们的数目降至过低，会给所有海洋生物带来危险。此句复数形式的numbers表达全海洋中鲨鱼的总量。当表示数值的高或低时，number要用high或low修饰。e.g.Inthatcountry,thenumberofchildrengoingtoschoolishigherincitiesthanintownsandvillage.

在那个国家，城市儿童入学人数比乡镇及农村要高。常与number搭配的动词有grow,fall等。e.g.Thenumberoffamiliesthatowncars

hasbeengrowingquicklyrecently.

近来拥有轿车的家庭数量增长很快。5.Environmentprotectiongroupsaroundtheworld,suchasWildAidandtheWWF,areteachingthepublicabout“finning”.

世界各地的环境保护组织，如野生救援协会和世界自然基金会，都在教育公众有关“猎翅”的行为。1)句中fin本为名词，指“鱼鳍”。此句中的

finning由动词化的fin（割鲨鱼鳍以获取鱼翅）的-ing形式转化而成，指课文中所陈述的“猎翅”这一行为。2)WildAid和WWF组织

WildAid（美国野生救援协会）是保护野生动物及栖息地环境的一个非盈利性的机构，1999年注册成立，其宗旨是保护及救助世界范围内的野生动物；WWF（世界自然基金会）英文全称为WorldWideFundforNature，成立于1961年，是享有国际盛誉，全球最大的独立性非政府环境保护组织之一。1.Manypeopledonotrealizetheyarekillingawholeshark______theyenjoyabowlofshark’sfinsoup.2.Sharksareatthetopofthefoodchain,____iftheirnumbersdrop,theocean’secosystemwillbeindanger.

Readthepassageagainandfillintheblankswiththewordsinthebox.

sowhensoalthoughifbutwhen3bManythinkthatsharksaretoostrongtobeendangered,____theyarewrong._________therearenoscientificstudiestosupportthis,alotofpeoplebelievethatsharkfinsaregoodforhealth.5.Sharksmaydisappearoneday___wedonotdosomethingtostopthesaleofsharkfins.

butAlthoughif用方框中词的适当形式完成下面的句子。Ithinkit’s____tomakesuchayoungboyworkallday.(2)Thepoorfishermancan’t_____hischildren’seducation.(3)Ithinkthegovernmentmustdevelop_____toprotectenvironment.(4)Eatingtoomuchjunkfoodis_______yourhealth.(5)Hecanusedifferent_______toworkouttheproblem.method,cruel,harmful,afford,lawcruelaffordlawharmfulmethodII.单项选择。1.—Areyougoingto_____anyoftheevents?—Yes.Maybelongjumpandhighjump.A.takepartin B.join C.attend D.joinin2.Ican’tafford____himanexpensivebirthdaypresent. A.tobuy B.buyingC.forbuying D.buy3.—Rememberto____thelightswhenyouleavetheroom.—OK.Iwill. A.turnon B.turndown C.turnup D.turnoff4.Thegirlalwayshassomemoneyto___snacks. A.spend B.payfor C.take D.cost5.—Look!_____boysareplayingontheplayground.—Yes._____themisabout200. A.Thenumberof;Anumberof B.Thenumberof;Thenumberof C.Anumberof;thenumberof D.Anumberof;AnumberofIII.根据汉语提示完成句子。1.我们必须采取行动来阻止他们。

Wemust___________tostopthem.2.我从没听说过这个人。

Ihavenever________suchaman.3.我们乐意尽力帮你摆脱困境。

Wearegladtodowhatwecando_________.4.到目前为止，我已经交了二十个朋友。

________,Ihavemadetwentyfriends.5.实际上，她从没去过那儿。

________,shehasneverbeenthere.

InfacttakeactionheardoftohelpoutSofarWrite5measurestoprotecttheenvironment.

Period34a-4cGrammarfocusSectionAUnit13We’retryingtosavetheearth.Revision不同种类的污染2.河底3.把垃圾扔到河里4.在……中起作用differentkindsofpollutionthebottleoftheriverthrowrubbishintotheriverplayapartinI.Checkifyouknowthesephrases.5.在中国南部6.对……有害7.在……顶部8.海洋生态系统insouthernChinabeharmfulto

atthetopoftheocean’secosystemII.Translatethesentences.1.甚至是河底都满是垃圾。2.这个方法不仅残酷还对环境有害。Eventhebottomoftheriverwasfullofrubbish.Thismethodisnotonlycruel,butalsoharmfultotheenvironment.3.鲨鱼处于海洋食物链的顶部。4.许多人相信鱼翅对健康有好处。Sharksareatthetopofthefoodchainintheocean’secosystem.Alotofpeoplebelievethatshark’sfinsaregoodforhealth.Wearetrytosavetheearth.PresentprogressiveTheriverusedtobesoclean.usedtoTheairisbadlypolluted.PassivevoiceNoscientificstudieshaveshownthatsharksfinsaregoodforhealth.PresentperfectWeshouldsavethesharks.ModelverbsGrammarFocusPayattentiontothesentences.1.We’re

tryingtosavetheearth.2.Theriverusedtobesoclean.3.Theairisbadlypolluted.4.Noscientificstudieshaveshownthatsharkfinsaregoodforhealth.5.Weshouldhelpsavethesharks.PresentprogressiveusedtoPassivevoicePresentperfectGrammarFocusModalverbs现在进行时（1）含义：表示正在发生或进行的动作。（2）基本结构：主语+be+现在分词（be的形式随主语的变化而变化）（3）基本用法：①表示现在正在进行的动作。特征：常常与now或具体的时间连用，有时句中会有感官动词来提示，或通过上下文来暗示。②表示现阶段一直进行的动作。这类动词常常是延续性动词。常于atpresent,thisweek,thesedays等连用。③表示主语的特征、性格、能力等本单元复习现在进行时、usedto句型、被动语态、现在完成时和情态动词。Whatafinedaytoday!Look!Whataretheydoing?Exercise现在完成时（1）含义：表示过去发生的动作对现在还有影响。（2）基本结构：主语+have/has+过去分词（3）基本用法：①表示过去发生的动作，但强调对现在产生影响。特征：不能与表示具体的时间状语连用。②表示过去发生的动作或存在的状态一直延续到现在，还可能继续下去。常常与since,for,inthepast+时间名词，inthelast+时间名词等时间状语连用，而且谓语动词要求是延续性动词。③表示一种“经历或体验”，即可以表示经历过也可以是从来都没有经历过。Completethefollowingsentences.1.I_________(be)inBeijingfortwoyears.2.I_____never_____(hear)ofthatmanbefore.3.Tom__________(work)theresincetwoyearsago.havebeenhaveheard

hasworkedExercise4.Thetwins___________(wash)theclothesforanhour.5.He_________(play)basketballsincethreeyearsago.6.Howlong____Sally_____(sing)yet?havewashedhasplayedhassung被动语态初中阶段我们学习了七种被动结构，归纳如下：（1）一般现在时是被动语态：am/is/are+过去分词（2）现在完成时的被动式：

have/has+been+过去分词（3）现在进行时的被动式：am/is/are+being+过去分词（4）一般过去时的被动式：was/were+过去分词（5）过去进行时的被动式：was/were+being+过去分词（6）过去完成时的被动式：had+been+过去分词（7）一般将来时的被动式：will/begoingtobe+过去分词（8）含有情态动词的被动式：情态动词+be+动词的过去分词。TranslatethesentencesbyusingPassivevoice.1.刚才一些老年人参观了博物馆。2.工人们使用不同种类的机器工作。Themuseumwasvisitedbysomeoldpeoplejustnow.Differentkindsofmachinesareusedtoworkbytheworkers.Exercise情态动词情态动词表示说话人对某一动作或状态的态度，如认为“可能”、“应当”、“必要”等。情态动词本身有一定的意义，但不能单独作谓语，也没有人称和数的变化。后面一般跟动词原形。usedto结构usedto意为“过去常常做某事”，指的是过去的习惯性动作，目的在于与现在形成对照。usedto是个情态动词，其中的to是不定式符号，后面跟动词原形。在美式英语中。它的疑问式是：Did＋主语＋usetodosth．？否定式是：主语＋didn'tuse．．。在英式英语中，它的疑问式应当是：Used＋主语＋tosth．？否定式应当是usednotto或use（d）n'tto。Heusedtostayuplate.他过去常熬到很晚。Translation.1.我们不能在教室里吃东西。2.首先你必须完成作业。3.他现在不可能在家。4.她一定知道这个问题的答案。ExerciseWecan’teatintheclassroom.

Youmustfinishyourhomeworkfirst.Hecan’tbeathomenow.

Shemustknowtheanswertothisquestion.Joe:_____youever_____(take)partinanenvironmentalproject?Ken:Yes,Ihave.I_____(help)withaClean-UpDaylastyear.Itwas__________(consider)thebiggestclean-upprojectthiscityever________(have).Fillintheblankswiththecorrectformsoftheverbsinbrackets.Havetakenhelpedconsideredhadhad4aJoe:Howmanypeople______(take)part?Ken:I_____(think)morethan1,000people_____(come)tohelpout.Joe:That’sfantastic!Iguesseveryoneinthiscityis_______(try)toimprovetheenvironment.Ken:Yes,wecan'taffordto_____(wait)anylongertotakeaction!tookthinkcametryingwaitFillintheblankswiththeappropriatemodalverbsfromthebox.

People_____thinkthatbigthings_____bedone.However,manyforgetthatsavingtheearthbeginswithsmallthings.Forexample,you_____saveelectricitybyturningoffthelightswhenyouleavearoom.You_____alsousepaperorreusablebagsinsteadofplasticbags.cancouldwouldhavetoshouldmustmay/mightmayshouldcouldwould4bMakealistforthingsthatpeoplecandotohelptheenvironmentanddiscussyourlistwithyourpartner.A:Ithinkthateveryoneshouldusepublictransportation.B:Idisagree.it'sdifficultforparentswithyoungchildrentousepublictransportation...usepublictransportation...4c

Discussing...usepublictransportationtakeyourownshoppingbagswhengoshoppingreducetheuseofairconditionersinsummerturnoffthelightswhenyouleavetheroomgrowmoreplants...4cA:Ithinkthateveryoneshouldtakeyourownshoppingbagswhengoshopping.B:Iagree.it'sgoodfortheenvironment.A:Ithinkthateveryoneshouldreducetheuseofairconditionersinsummer.B:Idisagree.thesummerissohot,especiallyinsourthChina.Withoutair-conditioners,peoplemaynothavethepatiencetowork.A:Ithinkthateveryoneshouldturnoffthelightswhenyouleavetheroom.B:Iagree.it'sgoodtosaveenergyresources.A:Ithinkthateveryoneshouldusepublictransportation.B:Idisagree.it'sdiffcultforparentswithyoungchildrentousepublictransportation.A:Ithinkthateveryoneshouldgrowmoreplants.B:Iagree.growingmoreplantswillprovideusmorefreshairandmakeourplantmorebeautiful.

选择填空：1.--____youpassmeapen?I'dliketowritedownthephonenumber.--Sure.Hereitis.A.CanB.NeedC.MightD.Must2.--MayIgotothecinema,Mum?--Certainly,butyou___bebackby11o'clock.A.canB.mayC.mustD.need3.you___worryaboutme.It'snothingserious.A.can'tB.mustn'tC.needn'tD.won't4.--Excuseme.IsthistherightwaytotheSummerPalace?--Sorry,I'mnotsure.butit____be.A.mightB.mustn'tC.can'tD.must5.Themanintheoffice____beMr.Black,becausehewenthomejustnow.A.mustn'tB.maynotC.can'tD.needn't6.Hepromisedtopickmeupattheschoolgate.However,he_____yet.A.didn’tarriveB.doesn’tarriveC.isn’tarrivingD.hasn’tarrived7.BaJin,oneofthegreatestwritersinChina,___as“People’sWriter”.

A.isregarded

B.hasregarded

C.isregarding

D.regards8.—WhereisTom?—He______inhisroom. A.isreading B.reads C.read D.wasreading9.—MayIgooutnow,Dad?—No.You_____letyourmotherknowfirst.A.canB.mayC.needD.must10.Herson_______Coke,butnowhe________milk.A.usedtodrink;isusedtodrinkingB.usedtodrinking;drinksC.isusedtodrinking;usedtodrinkD.isusedtodrink;isdrinking11.(2013江苏淮安)It'sgettingdark.Please__thelight.A.turnon B.turnoffC.turndown D.turnaround12.(2013湖北随州)–HowdoesJackusuallygotowork?—He______driveacar