Unit 13 We're trying to save the earth!重點(diǎn)知識(shí)點(diǎn)講解練習(xí)人教版英語九年級(jí)全冊

Unit13Wearetryingtosavetheearth!一、重點(diǎn)單詞1、litterv.亂扔｜｜n.垃圾；廢棄物v.使遍布2、bottomn．底部；最下部3、advantagen．優(yōu)點(diǎn)；有利條件4、costv.（cost，cost）花費(fèi)｜｜n.花費(fèi)；價(jià)錢考n.成本；代價(jià)5、harmfuladj.有害的6、takepartin參加7、affordv.承擔(dān)得起（后果）；買得起8、payfor付費(fèi)；付出代價(jià)9、takeaction采取行動(dòng)10、recyclev.回收利用；再利用11、throwaway扔掉；拋棄12、pull...down拆下；摧毀13、upsidedown上下顛倒；倒轉(zhuǎn)14、presidentn.負(fù)責(zé)人；主席；總統(tǒng)二、重點(diǎn)短語1.stopthesaleofsharkfins阻止魚翅交易2.sofar到目前為止3.scientificstudies.科學(xué)研究4.beindanger處于危險(xiǎn)中5.affordtodo承擔(dān)的起6.takeaction采取行動(dòng)7.beginwith從...開始8.takepartin參加9.addup加起來，總計(jì)10.payfor為...付款11.recyclebooksandpaper循環(huán)利用書籍和紙張12.turnoff關(guān)閉13.usepapernapkins用紙巾14.throwaway扔掉，拋棄15.putsthtogooduse好好利用某物16.haveacreativemind有一個(gè)創(chuàng)新思維17.amostunusualwoman一個(gè)很不尋常的婦女18.build/makesth.herselfoutofrubbish她自己用垃圾建造19.pulldown拆下，摧毀20.turnupsidedown上下顛倒過來，倒轉(zhuǎn)21.bemadeof由...做成22.aninspirationtosb.對(duì)某人是個(gè)鼓舞23.begoodatrecycling擅長循環(huán)利用24.usesth.todo用某物去做什么25.setupawebsite.創(chuàng)建網(wǎng)站26.setupasmallbusiness開一家小公司27.sellthemonline網(wǎng)上賣他們28.plantodo計(jì)劃做29.writeabookabout寫一本關(guān)于...的書30.newwaystodosth.干什么的新辦法三、重點(diǎn)知識(shí)點(diǎn)講解1、littern.垃圾v.亂扔2、cutdown削減；砍倒3、costv.&n.花費(fèi)4、notonly...butalso...不但……而且……5、takepartin參加6、Everyoneinthistownshouldplayapartincleaningitup!7、Thereareotheradvantagesofbikeriding.8、Sotogether,ouractionscanmakeadifferenceandleadtoabetterfuture!9、Iftheirnumbersdroptoolow,itwillbringdangertoalloceanlife.10、Sofar,noscientificstudieshaveshownthatsharkfinsaregoodforhealth,sowhyeatthem?講解版1、littern.垃圾v.亂扔1、litter作名詞相當(dāng)于rubbish，是不可數(shù)名詞。2、litter作動(dòng)詞用意為＂亂扔＂。2、cutdown削減；砍倒cutdown意為＂減少＂cutdown 砍倒；減少cutoff 切掉cutout 刪除cutup 切碎3、costv.&n.花費(fèi)cost作動(dòng)詞時(shí)，常用于Sthcost(s)sbsomemoney.【辨析】take/spend/cost/pay1、spend的主語必須是人①spendtime/moneyonsth在……上花費(fèi)時(shí)間(金錢)②spendtime/money(in)doingsth花費(fèi)時(shí)間(金錢)做某事2、cost的主語是物或某種活動(dòng)，還可以表示＂值＂①sthcosts(sb)＋金錢某物花了(某人)多少錢②(doing)sthcosts(sb)＋時(shí)間某物(做某事)花了(某人)多少時(shí)間3、take后面常跟雙賓語①Ittakessb.＋時(shí)間＋todosth.做某事花了某人多少時(shí)間②doingsth.takessb.＋時(shí)間做某事花了某人多少時(shí)間4、pay的基本用法是：①pay(sb)moneyforsth付錢(給某人)買…… ②payforsth付……的錢③payforsb替某人付錢 ④paysb付錢給某人⑤paymoneyback還錢4、notonly...butalso...不但……而且……notonly...butalso...意為＂不但……而且……＂，其中also可以省略。連接并列主語時(shí)，句子的謂語動(dòng)詞應(yīng)與butalso后的主語的人稱和數(shù)保持一致。either...or...意為＂或者……或者……，不是……就是……＂，當(dāng)其連接并列主語時(shí)，謂語動(dòng)詞要和最近的主語保持人稱和數(shù)的一致。both...and...意為＂……和……都＂，當(dāng)其連接并列主語時(shí)，謂語動(dòng)詞要用復(fù)數(shù)形式。5、takepartin參加【辨析】takepartin/join/joinin/attendtakepartin 指參加會(huì)議或群眾性活動(dòng)等，重點(diǎn)說明句子的主語參加該項(xiàng)活動(dòng)，并在其中發(fā)揮作用。join 指加入某個(gè)黨派、團(tuán)體、組織等，如＂參軍、入團(tuán)、入黨＂等。joinin 指參加某種活動(dòng)，如＂游戲＂等，joininsth意為＂參加某事＂。attend 側(cè)重參加或出席會(huì)議、學(xué)術(shù)活動(dòng)、音樂會(huì)、上課等，著重強(qiáng)調(diào)成為其中的聽眾或觀眾。6、Everyoneinthistownshouldplayapartincleaningitup!playapartin...的意思是＂在……起作用＂，相當(dāng)于playarolein...。7、Thereareotheradvantagesofbikeriding.advantage的意思是＂優(yōu)點(diǎn)；有利條件＂，反義詞是disadvantage，意思是＂缺點(diǎn)，不利條件＂。havetheadvantageof勝過……8、Sotogether,ouractionscanmakeadifferenceandleadtoabetterfuture!makeadifference的意思是＂有重大的影響＂；leadto的意思是＂導(dǎo)致，引導(dǎo)＂。9、Iftheirnumbersdroptoolow,itwillbringdangertoalloceanlife.if引導(dǎo)的是條件狀語從句，謂語動(dòng)詞使用一般現(xiàn)在時(shí)表示將來，主句使用一般將來時(shí)。10、Sofar,noscientificstudieshaveshownthatsharkfinsaregoodforhealth,sowhyeatthem?1、sofar的意思是＂到目前為止＂，主句時(shí)態(tài)使用現(xiàn)在完成時(shí)。2、句中that引導(dǎo)的是賓語從句，作動(dòng)詞shown的賓語。begoodfor的意思是＂對(duì)……有好處＂。練習(xí)一、單選題1．Thereis________advantageofthismachine.Itcansavemuchelectricity.A．a(chǎn)n B．a(chǎn) C．the D．/2．Itis________ofyoutokillcatsanddogs.Theyareourfriends.A．cruel B．nice C．good D．reusable3．Sharksareatthetopofthefoodchain,________iftheirnumbersdrop,theocean’secosystemwillbeindanger.A．when B．a(chǎn)lthough C．so D．but4．Don’ttalkina________voice.Wecan’thearyouclearly.A．tall B．short C．high D．low5．Hehopestosetup________“metalart”themeparktoshowpeopletheimportanceofenvironmentalprotection.A．a(chǎn) B．a(chǎn)n C．the D．/6．—Thedressisverynice.I’lltakeit.—Butyou’dbetter________first.Ithinkit’salittlelargeforyou.A．payforit B．putiton C．putitoff D．tryiton7．Whenmymothercameintomyroom,Iwasjustlyinginbedandwaitingforthealarmto________.A．putoff B．takeoff C．turnoff D．gooff8.TomorrowisEarthDay.Let’sdiscuss_________.A．whenshallwegiveouttheleaflets B．whatwecandotorecyclethingsC．howshouldwesavemoreenergy D．whethercanwemakeourcitygreener9．Jim,you’dbetternot________toomuchtimeonyourmobilephone.A．cost B．spend C．take D．pay10．TheTokyoOlympicswillbeheldfromJuly23toAug8.Chineseathletes（運(yùn)動(dòng)員）will________155events.A．takepartin B．takecareof C．takepridein D．payattentionto二、用所給詞的適當(dāng)形式填空1.Look!Somevolunteers______________(clean)upthepark.2.Hisfatherusedto___________(stay)athome,butnowheisusedto______(take)awalkafterdinner.3.Mobilephonesmustn’t______________(bring)totheclassroominourschool.4.AtalkonhowtolearnEnglish_____________(give)intheschoolhall.I’mlookingforwardtoit.5.QianXuesen______________(consider)as“FatherofMissile(導(dǎo)彈)inChina”6．Thistoywillhelpchildrenwiththeir_________(create)7．Somedayyouwillcometorealizethe_________ofEnglish.(important)8．Ithinkwe_________prettywellsofar.(do)9．Whatdoyouthinkofthe_____________pollution？(environment)10．StudyingEnglishhasmany_________．(advantage)三、根據(jù)漢語提示完成句子1．工人們正在竭盡全力降低事故率。Theworkersaredoingalltheycan________________________theaccidentrate.2．我的家鄉(xiāng)的天空過去常常是藍(lán)色的。Theskyinmyhometown________________________blue.3．我們的行動(dòng)會(huì)使它變得不同，并通向更好的未來。Ouractioncan________________________andleadtoabetterfuture.4．舊的樓房已經(jīng)被拆除了。Theoldbuildings____________________________________.5．我們很高興看到我們的城市在過去的幾年里變得越來越美麗。Wearehappytoseeourcity________________moreandmorebeautifulinthe____________________．6.這個(gè)房間里將有一個(gè)聚會(huì),請(qǐng)?jiān)诰蹠?huì)后把房間打掃干凈。Therewillbeapartyinthisroom.Pleaseitaftertheparty.7.樹對(duì)我們是有用的,當(dāng)我們砍倒一些時(shí),應(yīng)該栽更多。Treesareveryusefultous.Weshouldplantmorewhenwesome.8.這條裙子花了我60美元。Thedress$60.9.我們的行動(dòng)會(huì)帶來不同,并引領(lǐng)一個(gè)更好的未來。Ouractionscanandleadtoabetterfuture.10.這條河被嚴(yán)重污染了。Theriver.四、閱讀回答問題GlobalWarmingSatterlivesinBonnotola(BT)insouthwesternBangladesh(孟加拉國).Thesmallseasidevillagewasoncehometo2,000people.Mostofthemwerefarmers,likeSatter.Butrisingseaspoisoned(毒化)thesoilwithsaltwater.Twomajorstormsinthelasttwoyearsdestroyedthemudbarriers(土壩)thatprotectedthevillagefromthesea.Today,only480peopleremain.“TheeffectsofglobalwarmingaredestroyingpartsofBangladesh,”saidMohammadwhoistheheadoftheresearchcenterPRD．Saltinsoilhasincreasedby26percentoverthepast35years.In1973,833,000hectaresoflandwerepoisonedbyseawater.Areasoffreshwaterwerealsopoisoned.Thisgrewto1.02millionhectaresin2000,and1.056millionhectaresin2009,reportsBangladesh’sSRDI.AtBTvillage,thewomenwalkupto4kilometerstoawelltocollectwaterforcookinganddrinkingeveryday.Wellsintheareaonlyhavefreshwaterinthemonthsafteryearlyheavyrains.Inthesummer,freshwaterisdifficulttofind,saidoneofthewomen,Halder.ThevillageslieinBangladesh’ssouthwesternShyamnagararea.Theareaishometo400,000people.Officialssaythegovernmentdoesnothavethemoneytobuilddesalinationfactories.“Theareaneedsmaybe500desalinationfactories.Butwe’veonlygot50,”saidAlamgirheadofalocalorganization.TheUnitedNationsmadeareportthatwarnedglobalwarmingwouldgetworseinthecomingyearsevenifhumansimmediatelystoppedproducingcarbongas.AftertheUNreport,thequestionremains:Willworldleaderschoosetoprotecttheenvironment?Nomatterwhattheworldleadersdo,therearealotofwaysindividual(個(gè)體)peoplecanmakechoicestoprotecttheenvironment.Peoplecanchangewhattheye