【教學(xué)】Unit 13 Section A 第3課時(shí) 參考（九全）

Unit13We’retryingtosavetheearth.Period3SectionAGrammarFocus-4cRevision不同種類(lèi)的污染2.河底3.把垃圾扔到河里4.在……中起作用differentkindsofpollutionthebottomoftheriverthrowrubbishintotheriverplayapartinI.Checkifyouknowthesephrases.Revision5.在中國(guó)南部6.對(duì)……有害7.在……頂部8.海洋生態(tài)系統(tǒng)insouthernChinabeharmfulto

atthetopoftheocean’secosystemII.Translation.1.甚至河底都滿(mǎn)是垃圾。2.這個(gè)方法不僅殘酷還對(duì)環(huán)境有害。Eventhebottomoftheriverwasfullofrubbish.Thismethodisnotonlycruel,butalsoharmfultotheenvironment.RevisionRevision3.鯊魚(yú)處于海洋食物鏈的頂部。4.許多人相信魚(yú)翅對(duì)健康有好處。Sharksareatthetopofthefoodchainintheocean’secosystem.Alotofpeoplebelievethatshark’sfinsaregoodforhealth.GrammarFocusPayattentiontothesentences.1.We’re

tryingtosavetheearth.2.Theriverusedtobesoclean.3.Theairisbadlypolluted.4.Noscientificstudieshaveshownthatsharkfinsaregoodforhealth.5.Weshouldhelpsavethesharks.PresentprogressiveusedtoPassivevoicePresentperfectModalverbs現(xiàn)在進(jìn)行時(shí):Presentprogressive結(jié)構(gòu):be(am/is/are)+v.-ing標(biāo)志詞：look,listen,now,rightnow…e.g.Look!Theboyiscrying.定義：表示說(shuō)話時(shí)(瞬間)正在進(jìn)行的動(dòng)作,也表示目前或現(xiàn)階段正在進(jìn)行的動(dòng)作。

GrammarFocusWhatafinedaytoday!Look!Whataretheydoing?GrammarFocusGrammarFocususedtodosth.表示過(guò)去常常做某事,而現(xiàn)在往往不做了,后接動(dòng)詞原形。beusedtodoingsth.表示習(xí)慣于做某事e.g.Iusedto

getup

atsixo’clock.

Joe

isusedtodrinking

acupofcoffeeeverymorning.usedtodo與beusedtodoingGrammarFocusTranslation.1.她過(guò)去常常周末和朋友閑逛。

Sheusedtohangoutwithfriendsonweekends.2.他習(xí)慣晚睡。

Heisusedtostayingup.被動(dòng)語(yǔ)態(tài)：Passivevoice定義：表示主語(yǔ)是動(dòng)作的承受者，即行為動(dòng)作的對(duì)象的一種語(yǔ)態(tài)。結(jié)構(gòu)：be+過(guò)去分詞e.g.Anewschoolwasbuilt

lastyear.Ourclassroom

iscleaned

everyday.GrammarFocusGrammarFocusTranslatethesentencesbyusingPassivevoice.1.剛才一些老年人參觀了博物館。2.工人們使用不同種類(lèi)的機(jī)器工作。Themuseumwasvisitedbysomeoldpeoplejustnow.Differentkindsofmachinesareusedtoworkbytheworkers.結(jié)構(gòu):has/have+過(guò)去分詞標(biāo)志詞：already,yet,ever,never,since,for…e.g.Ihaven’tfinished

myhomeworkyet.定義：表示動(dòng)作已經(jīng)完成,但對(duì)現(xiàn)在造成影響;或者表示從過(guò)去某一時(shí)間開(kāi)始一直延續(xù)到現(xiàn)在并還可能持續(xù)下去的動(dòng)作。

現(xiàn)在完成時(shí):PresentperfectGrammarFocusCompletethefollowingsentences.I_________(be)inBeijingfortwoyears.2.I_____never_____(hear)ofthatmanbefore.3.Tom__________(work)theresincetwoyearsago.havebeenhaveheardhasworkedGrammarFocus4.Thetwins___________(wash)theclothesforanhour.5.He_________(play)basketballsincethreeyearsago.6.Howlong____Sally_____(sing)yet?havewashedhasplayedhassungGrammarFocusGrammarFocus1.情態(tài)動(dòng)詞本身有一定的詞義,表示說(shuō)話人的情緒、態(tài)度或語(yǔ)氣,但不能單獨(dú)作謂語(yǔ),只能與其他動(dòng)詞構(gòu)成謂語(yǔ)。常見(jiàn)的有:can(could),may(might),must,need,shall(should),will(would)等。情態(tài)動(dòng)詞GrammarFocus2.情態(tài)動(dòng)詞無(wú)人稱(chēng)和數(shù)的變化,后接動(dòng)詞原形。否定式是在情態(tài)動(dòng)詞后面加not。個(gè)別情態(tài)動(dòng)詞有過(guò)去式形式,可用來(lái)表達(dá)更加客氣、委婉的語(yǔ)氣。

e.g.Kencan

climbupthetresslikeakoala.Tracycouldrideabicyclewhenshewasfiveyearsold.Youmustn’t

playwithfire.Itisdangerous.GrammarFocusTranslation.1.我們不能在教室里吃東西。2.首先你必須完成作業(yè)。3.他現(xiàn)在不可能在家。4.她一定知道這個(gè)問(wèn)題的答案。Wecan’teatintheclassroom.

Youmustfinishyourhomeworkfirst.Hecan’tbeathomenow.

Shemustknowtheanswertothisquestion.Practice4aFillintheblankswiththecorrectformsoftheverbsinbrackets.Joe:_____youever______(take)partinanenvironmentalproject?Eric:Yes,Ihave.I______(help)withaClean-UpDaylastyear.Itwas__________(consider)thebiggestclean-upprojectthiscity____ever____(have).Havetakenhelpedconsideredhadhad參加Joe:Howmanypeople____(take)part?Eric:I_____(think)morethan1,000people______(come)tohelpout.Joe:That’sfantastic!Iguesseveryoneinthiscityis______(try)toimprovetheenvironment.Eric:Yes,wecan’tafford

to____(wait)anylongertotakeaction!tookthinkcametryingwaitv.

承擔(dān)得起(后果);買(mǎi)得起Practice4bFillintheblankswiththeappropriatemodalverbsfromthebox.People__________thinkthatbigthings_____bedonetosavetheearth.Manyforgetthatsavingtheearthbeginswithsmallthings.Forexample,you____savemay/mightmustcancanwouldcouldhavetoshouldmustmay/mightPracticeelectricitybyturningoffthelightswhenyouleavearoom.You______alsousereusable

bagsinsteadofplasticbags.Ithinkit’sagreatideathatyounow______payforplasticbagsinsomestores.Andinsteadofdrivingtoschoolorwork,you__________rideyourbikeorwalk.Ifit’sfar,you__________takethebus.Allthesecouldhavetocan/shouldcan/couldadj.可重復(fù)使用的付費(fèi);付出代價(jià)PracticePracticesmallthings______addupandbecomebigthingsthat_________improvetheenvironment.Let’stakeactionnow!couldwould/can采取行動(dòng)4cMakealistofthingsthatpeoplecandotohelptheenvironmentanddiscussyourlistwithyourpartner.usepublictransportation(n.交通運(yùn)輸);turnoffthelightswhenyouleavearoom;usereusablebagsinsteadofplasticbags;rideyourbikeorwalktoschoolorwork;stopusingpapernapkins(n.餐巾紙);recyclebooksandpaper…PracticeIthinkthateveryoneshouldusepublictransportation.Idisagree.It’sdifficultforparentswithyoungchildrentousepublictransportation…PracticeExplanation1.Wecan’taffordtowaitanylongertotakeaction!

affordv.

承擔(dān)得起;提供,給予

affordtodosth.