unit13SectionB(3a-3b)教學(xué)講解課件

Unit13We'retryingtosavetheearth!SectionB2c-3bRevision1.停止乘小汽車2.回收紙3.用紙巾4.好好利用5.用垃圾建造房子6.倒置7.經(jīng)營(yíng)小生意stopridingincarsrecyclepaperusepapernapkinsputtogoodusebuildahouseoutofrubbishturnupsidedownsetupasmallbusiness8.回復(fù)，歸還9.舊玻璃瓶10.拆下11.一個(gè)有創(chuàng)意的大腦12.開一個(gè)小店13.更受歡迎的作品14.給他人帶來(lái)歡樂(lè)bringbackoldglassbottlespulldownacreativemindopenasmallshopmorepopularworksbringhappinesstoothers2cFillintheblankswiththecorrectformsofthephrasesinthebox.puttogoodusebuild…outofpulldown（拆下）setupknownfornotonly…butalsoAmyHayeslivesintheUK.Manyoftheoldbuildingsinherneighborhoodwere_________________.pulleddown2.AlltherubbishandoldthingsinAmy’sneighborhoodwerethen_______________whenAmybuiltherhouse.

3.Amyisverycreative.She_______herfrontgate________rocksandoldglassbottles.Sheputanoldboatontopofherhouse.putbuiltoutofputtogoodusebuild…outofpulldown（拆下）setupknownfornotonly…butalsotogooduse4.JessicaWongsellsherbagsinasmallshop,butshehasalso________anonlinebusinesstosellthem.5.ThoughJessica’sbagsaremakefromoldclothes,herbagsare____________beingcuteanduseful.setupknownforputtogoodusebuild…outofpulldown（拆下）setupknownfornotonly…butalso6.WangTao_________makeslargepiecesofmetalartthatlooklikeanimalsorhumans,__________makessmallerpiecesforthehome.notonlybutalsoputtogoodusebuild…outofpulldown（拆下）setupknownfornotonly…butalso2dUnderlinethewordsinthepassagebasedonthewordsbelow.Whatarethedifferences?thinkuseenvironmentusualrecyclebuildcreatespecialrecentimportantprotectinspirethink–rethinkspecial–especially

use–reuse,usefulrecent–recently

usual–unusual

environment–environmentalrecycle–recyclingimportant–importancebuild–buildingprotect–protectioncreate–creative;creativityinspire–inspiration1.Rethink,Reuse,Recycle!

re-是最常用的前綴之一。它可以加在名詞或動(dòng)詞前面，構(gòu)成新的名詞或動(dòng)詞。表示“再”、“重新”、“重復(fù)”的意思。例如：rethink（再思考）reuse（再運(yùn)用）restart（重新開始）recycle

（再利用）2.Sheisamostunusualwoman.un-前綴，常加在形容詞、副詞、分詞、動(dòng)詞和名詞之前；第一，表示否定意義。第二，表示“反動(dòng)作”。即“相反的動(dòng)作”。例如：uneconomic不經(jīng)濟(jì)的uncomfortable不舒服的unending無(wú)盡的unfortunate不幸的unusual不平常的unkind不仁慈的unbind解開，釋放uncover揭開……的蓋子unearth由地下掘出unbutton解開鈕扣3.Nothingisawasteifyouhavea

creativemind.-ive是形容詞后綴一般表示有......的create﹢-ivecreative4.AmyrecentlywonaprizefromtheHelpSaveOurPlanetSociety.

recent﹢-lyrecently形容詞加

ly變副詞5.Amyisaninspiration(n.靈感)tousall.后綴-tion附在動(dòng)詞后面構(gòu)成名詞當(dāng)單詞最后是t,d,te,de時(shí)，變名詞加

tion或者ation,ition；6.Sheespeciallylikestouseoldjeanstomakehandbags.

special和especial是同義詞，

especially是especial的副詞。7.Thethemeparktoshowpeoplethe

importanceofenvironmentalprotection.importance是important的名詞。environmental是environment的形容詞形式。protect﹢-ionprotectionSelfCheck1.Writedifferentformsofthewords.Thenaddmoretoeachgroup.v.—n.pollute---act---protect---inspire---build---create---farm---sing---travel---drive---run---write---pollutionactionprotectioninspirationbuildingcreationfarmersingertravelerdriverrunnerwritern.—adj.fame---wood---science---health---south---care---rain---cloud---luck---help---color---day---famouswoodenscientifichealthysoutherncarefulrainycloudyluckyhelpfulcolorfuldailyadj.—n.sunny---noisy---harmful---beautiful---different---important---woolen---sunnoiseharmbeautydifferenceimportancewooladj.—adv.slow---wide---sudden---real---quick---true---possible---happy---loud---quiet---heavy---easy---angry---good---slowlywidelysuddenlyreallyquicklytrulypossiblyhappilyloudlyquietlyheavilyeasilyangrilywellslow---wide---sudden---real---quick---true---possible---happy---loud---quiet---heavy---easy---angry---good---slowlywidelysuddenlyreallyquicklytrulypossiblyhappilyloudlyquietlyheavilyeasilyangrilywell寫作指導(dǎo)

本次寫作內(nèi)容是一封書信，信中首先要介紹你所在城市存在有哪些環(huán)境問(wèn)題，是誰(shuí)造成的這些問(wèn)題，然后提出解決這些環(huán)境問(wèn)題的方法和措施，可以結(jié)合前面學(xué)過(guò)的解決辦法來(lái)完成這封信。分成_____方面寫1.存在哪些環(huán)境問(wèn)題2.誰(shuí)造成了這些無(wú)問(wèn)題（即原因）3.解決這些問(wèn)題的方法和措施（即建議）3DearSir/Madam,IhavelivedinthiscitysinceIwasbornandIlovemyhometown.Butenvironmentalproblemsarebecomingmoreandmoreseriousinourcity.Thereissomuch_____pollutionand_____pollution.Because…Ithinkweshouldsaveourcity.…Ifeveryonedoessomethingfortheenvironment,ourhometownwillbemoreandmorebeautiful.(最后結(jié)束語(yǔ)）DearSir/Madam,IhavelivedinthiscitysinceIwasbornandIlovemyhometown.Butenvironmentalproblemsarebecomingmoreandmoreseriousinourcity.Thereissomuchairpollutionandlandpollution.Becausetherearemorecarsontheroad.Andfactoriesburncoalandpollutetheairwithalotofblacksmoke.Also,peoplethrowawayrubbisheverywhere.

Ithinkweshouldsaveourcity.First,weshouldtakethebusorridebikesinsteadofdriving.Second,wecouldthrowtherubbishinthebinsandtakepartincleaningupthecity.Ialsosuggestthatthegovernmentshouldclosedownsomefactoriesanddeveloplawstostopthepollution.Ifeveryonedoessomethingfortheenvironment,ourhometownwillbemoreandmorebeautiful.(最后結(jié)束語(yǔ)）HomeworkFinishyourpassageof3b.2eMakealistofthingsthatneedtobedonetosavetheenvironment.Whichthingscanbedonebycommonpeopleeveryday?takeyourownbagswhenyougoshoppingspendlesstimeintheshowerturnoffthelightswhenyouleavearoomtakepublictransportratherthandriveavoidusingairconditionersWhichthingshavetobedonebygovernmentsandorganizations?DcatethepublicensurethatfactoriesgetridofwasteinaresponsiblewaypreservetheforestspreserveendangeredspeciesnotallowactivitiesthatseriouslyendangertheenvironmentSurveythestudentsinourclass.Thentakeaclassvote.Doyou…Namesrecyclepaper?turnofflightsinthehouse?…Unit13We’retryingtosavetheearth!SectionB23a-SelfCheckWarmingupWhatshouldwedotosavetheearth?Turnoffthelightswhenweleavearoom.Takeourownbagswhenshopping.Rideabike.Recyclepaper.Don’tusepapernapkins.Whatshouldgovernmentsdotosavetheearth?Theyshouldclosedownthefactoriesthatputwasteintotheriver.Setupalotofdustbinsonthestreet.Stoppeoplefromusingwoodenchopsticks,plasticbowlsandbags.Organizepeopletocleanupthestreetsandrivers.Thinkabouttheenvironmentinyourtown/cityandcompletethechartbelow.Whichpartsofthetown/cityhaveaniceenvironment?Whyaretheynice?Whichpartsneedtobeimproved?Why?3aGoodenvironmentWhyBadenvironmentWhyparktheairiscleanstreetssomanytreesrestaurantscleanandtidyriveralotofrubbishsomanycarsairtoomanyfactoriesstreets3bWritingWritealettertothecitymayorabouttheproblemsandyoursuggestions.Inyourletter,describetheenvironmentalproblemsinyourtown/city.1.Whataretheproblems?2.Wherearethey?3.Whatorwhoiscausingtheseproblems?Then,givesuggestionsorpossiblewaystosolvetheproblems.Ithinkthat…Weshould/could…Isuggest…2.Matcheachstatementwiththegrammarstructure.StatementGrammarTheriverusedtobesoclean.PresentprogressiveWehaveseenmanychangesintheenvironment.ModalverbsPeopleshouldtakepublictransportationmore.PassivevoiceTheriverispollutedbyfactories.usedtoTheairpollutionisgettingworseandworse.Presentperfect3.Writewaystocutdownonthesekindsofpollution.KindsofpollutionWaystocutdownwaterpollutionlandpollutionnoisepollutionairpollutionstopfactoriesfromthrowingwasteintorivers.TrynottouseplasticbagswhenshoppingCutdownthenumberofcars.Reducethenumberoffactoriesthatburncoal.Unit13We'retryingtosavetheearth!SectionA3GrammarFocus-4cRevision

不同種類的污染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.Translatethesentences.1.甚至是河底都滿是垃圾。2.這個(gè)方法不僅殘酷還對(duì)環(huán)境有害。Eventhebottomoftheriverwasfullofrubbish.Thismethodisnotonlycruel,butalsoharmfultotheenvironment.3.鯊魚處于海洋食物鏈的頂部。4.許多人相信魚翅對(duì)健康有好處。Sharksareatthetopofthefoodchainintheocean’secosystem.Alotofpeoplebelievethatshark’sfinsaregoodforhealth.Payattentiontothesentences.1.We’re

tryingtosavetheearth.2.Theriverusedtobesoclean.3.Theairisbadlypolluted.4.Noscientificstudieshaveshownthatsharkfinsaregoodforhealth.5.Weshouldhelpsavethesharks.PresentprogressiveusedtoPassivevoicePresentperfectGrammarFocusModalverbs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。Whatafinedaytoday!Look!Whataretheydoing?Exerciseusedtodosth.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

getupatsixo’clock.Joeisusedtodrinkingacupofcoffeeeverymorning.usedtodo與beusedtodoingTranslation.1.她過(guò)去常常周末和朋友閑逛。

Sheusedtohangoutwithfriendsonweekends.2.他習(xí)慣于每天晚上睡得很晚。

Heisusedtostayingup.Exercise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.Anewschoolwasbuiltlastyear.

Ourclassroomiscleanedeveryday.TranslatethesentencesbyusingPassivevoice.1.剛才一些老年人參觀了博物館。2.工人們使用不同種類的機(jī)器工作。Themuseumwasvisitedbysomeoldpeoplejustnow.Differentkindsofmachinesareusedtoworkbytheworkers.Exercise結(jié)構(gòu):has/have+過(guò)去分詞標(biāo)志詞：already,yet,ever,never,since,for…e.g.Ihaven’tfinishedmyhomeworkyet.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):PresentPerfectCompletethefollowingsentences.I_________(be)inBeijingfortwoyears.2.I_____never_____(hear)ofthatmanbefore.3.Tom__________(work)theresincetwoyearsago.havebeenhaveheardhasworkedExercise4.Thetwins___________(wash)theclothesforanhour.5.He_________(play)basketballsincethreeyearsago.6.Howlong____Sally_____(sing)yet?havewashedhasplayedhassung1.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)。常見的有:can(could),may(might),must,need,shall(should),will(would)等。情態(tài)動(dòng)詞2.情態(tài)動(dòng)詞無(wú)人稱和數(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.Kencanclimbupthetresslikeakoala.Tracycouldrideabicyclewhenshewasfiveyearsold.Youmustn’tplaywithfire.Itisdangerous.Translation.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。ExerciseWecan’teatintheclassroom.

Youmustfinishyourhomeworkfirst.Hecan’tbeathomenow.

Shemustknowtheanswertothisquestion.4aFillintheblankswiththecorrectformsoftheverbsinbrackets.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’taffordto____(wait)anylongertotakeaction!tookthinkcametryingwaitv.

承擔(dān)得起(后果);買得起4bFillintheblankswiththeappropriatemodalverbsfromthebox.People__________thinkthatbigthings______bedonetosavetheearth.Manyforgetthatsavingtheearthbeginswithsmallthings.Forexample,you____savemay/mightmustcancanwouldcouldhavetoshouldmustmay/mightelectricitybyturningoffthelightswhenyouleavearoom.You______alsousereusablebagsinsteadofplasticbags.Ithinkit’sagreatideathatyounow______payforplasticbagsinsomestores.Andinsteadofdrivingtoschoolorwork,you__________rideyourbikeorwalk.Ifit’sfar,you__________takethebus.Allthese

couldhavetocan/shouldcan/could關(guān)掉adj.可重復(fù)使用的付費(fèi);付出代價(jià)smallthings______addupandbecomebigthingsthat_________improvetheenvironment.Let’stakeactionnow!couldwould/can采取行動(dòng)4cMakealistofthingsthatpeoplecandotohelptheenvironmentanddiscussyourlistwithyourpartner.usepublictransportation(n.交通運(yùn)輸);turnoffthelightswhenyouleavearoom;usereusablebagsinsteadofplasticbags;rideyourbikeorwalktoschoolorwork;stopusingpapernapkins(餐巾紙);recyclebooksandpaper…DiscussionIthinkthateveryoneshouldusepublictransportation.Idisagree.It’sdifficultforparentswithyoungchildrentousepublictransportation…1.Wecan’taffordtowaitanylongertotakeaction!

affordv.

承擔(dān)得起;提供,給予

affordtodosth.(常與can,beableto連用)買得起;有足夠的……e.g.Wecan’taffordtopaysuchaprice.

我們付不起這個(gè)價(jià)錢。

Dancingaffordsuspleasure.

跳舞給我們帶來(lái)快樂(lè)。2.…saveelectricitybyturningoffthelightswhenyouleavearoom.

turnoff關(guān)掉

e.g.Pleaseturnthetelevisionoffbeforeyougotobed.

睡覺(jué)前請(qǐng)關(guān)掉電視。turnaround轉(zhuǎn)身turnup調(diào)高(音量)turndown調(diào)低;拒絕turninto變成;進(jìn)入turnon打開,發(fā)動(dòng)turnoff關(guān)掉,關(guān)閉turnouttobe結(jié)果是turnover移交拓展:turn相關(guān)短語(yǔ)Finishtheexercisesintheworkbook.2014年版新目標(biāo)英語(yǔ)九年級(jí)系列復(fù)習(xí)課件---Unit132014.11重點(diǎn)詞組復(fù)習(xí)1.充滿2.扔進(jìn)3.在……起作用4.扔掉5.減少6.起作用；有影響7.導(dǎo)致8.切除9.不但……而且……10.對(duì)……有害befullofthrow…intoplayapartinthrowawaycutdownmakeadifferenceleadtocutoffnotonly…butalso…beharmfulto

11.在……頂部或頂端12.科學(xué)研究13.參加14.幫助解決難題15.關(guān)掉16.付費(fèi)；付出代價(jià)17.加起來(lái)18.采取行動(dòng)19.好好利用20.拆下，摧毀atthetopofscientificstudytakepartinhelpoutturnoffpayforadduptakeactionputsth.togoodusepull...down21.上下顛倒22.恢復(fù)，使想起，歸還23.關(guān)燈24.有一個(gè)創(chuàng)新的頭腦25.浪費(fèi)時(shí)間做某事26.贏得……獎(jiǎng)27.創(chuàng)建28.因……而著名29.從……改造30.和往常一樣upsidedownbringbackturnoffthelighthaveacreativemindwastetimedoingwinaprize(for)setupbeknown/famousforbuild/make...outofasusual本單元語(yǔ)法復(fù)習(xí)：

現(xiàn)在進(jìn)行時(shí)；usedto句型；被動(dòng)語(yǔ)態(tài)；現(xiàn)在完成時(shí)；情態(tài)動(dòng)詞?，F(xiàn)在進(jìn)行時(shí)（1）含義：表示正在發(fā)生或進(jìn)行的動(dòng)作。（2）基本結(jié)構(gòu)：主語(yǔ)+be+現(xiàn)在分詞（be的形式隨主語(yǔ)的變化而變化）（3）基本用法：①表示現(xiàn)在正在進(jìn)行的動(dòng)作。特征：常常與now或具體的時(shí)間連用，有時(shí)句中會(huì)有感官動(dòng)詞來(lái)提示，或通過(guò)上下文來(lái)暗示。②表示現(xiàn)階段一直進(jìn)行的動(dòng)作。這類動(dòng)詞常常是延續(xù)性動(dòng)詞。常于atpresent,thisweek,thesedays等連用。③表示主語(yǔ)的特征、性格、能力等現(xiàn)在完成時(shí)（1）含義：表示過(guò)去發(fā)生的動(dòng)作對(duì)現(xiàn)在還有影響。（2）基本結(jié)構(gòu)：主語(yǔ)+have/has+過(guò)去分詞（3）基本用法：①表示過(guò)去發(fā)生的動(dòng)作，但強(qiáng)調(diào)對(duì)現(xiàn)在產(chǎn)生影響。特征：不能與表示具體的時(shí)間狀語(yǔ)連用。②表示過(guò)去發(fā)生的動(dòng)作或存在的狀態(tài)一直延續(xù)到現(xiàn)在，還可能繼續(xù)下去。常常與since,for,inthepast+時(shí)間名詞，inthelast+時(shí)間名詞等時(shí)間狀語(yǔ)連用，而且謂語(yǔ)動(dòng)詞要求是延續(xù)性動(dòng)詞。③表示一種“經(jīng)歷或體驗(yàn)”，即可以表示經(jīng)歷過(guò)也可以是從來(lái)都沒(méi)有經(jīng)歷過(guò)。被動(dòng)語(yǔ)態(tài)歸納如下（三種紅色要求熟練掌握，其余為了解）（1）一般現(xiàn)在時(shí)是被動(dòng)語(yǔ)態(tài)：am/is/are+過(guò)去分詞（2）現(xiàn)在完成時(shí)的被動(dòng)式：

have/has+been+過(guò)去分詞（3）現(xiàn)在進(jìn)行時(shí)的被動(dòng)式：am/is/are+being+過(guò)去分詞（4）一般過(guò)去時(shí)的被動(dòng)式：was/were+過(guò)去分詞（5）過(guò)去進(jìn)行時(shí)的被動(dòng)式：was/were+being+過(guò)去分詞（6）過(guò)去完成時(shí)的被動(dòng)式：had+been+過(guò)去分詞（7）一般將來(lái)時(shí)的被動(dòng)式：will/begoingtobe+過(guò)去分詞（8）含有情態(tài)動(dòng)詞的被動(dòng)式：情態(tài)動(dòng)詞+be+動(dòng)詞的過(guò)去分詞。情態(tài)動(dòng)詞情態(tài)動(dòng)詞表示說(shuō)話人對(duì)某一動(dòng)作或狀態(tài)的態(tài)度，如認(rèn)為“可能”、“應(yīng)當(dāng)”、“必要”等。情態(tài)動(dòng)詞本身有一定的意義，但不能單獨(dú)作謂語(yǔ)，也沒(méi)有人稱和數(shù)的變化。后面一般跟動(dòng)詞原形。usedto結(jié)構(gòu)usedto意為“過(guò)去常常做某事”，指的是過(guò)去的習(xí)慣性動(dòng)作，目的在于與現(xiàn)在形成對(duì)照。usedto是個(gè)情態(tài)動(dòng)詞，其中的to是不定式符號(hào)，后面跟動(dòng)詞原形。在美式英語(yǔ)中。它的疑問(wèn)式是：Did＋主語(yǔ)＋usetodosth．？否定式是：主語(yǔ)＋didn'tuse．．。在英式英語(yǔ)中，它的疑問(wèn)式應(yīng)當(dāng)是：Used＋主語(yǔ)＋tosth．？否定式應(yīng)當(dāng)是usednotto或use（d）n'tto。Heusedtostayuplate.他過(guò)去常熬到很晚。usedto結(jié)構(gòu)usedto意為“過(guò)去常常做某事”，指的是過(guò)去的習(xí)慣性動(dòng)作，目的在于與現(xiàn)在形成對(duì)照。usedto是個(gè)情態(tài)動(dòng)詞，其中的to是不定式符號(hào)，后面跟動(dòng)詞原形。在美式英語(yǔ)中(掌握)

它的疑問(wèn)式是：Did＋主語(yǔ)＋usetodosth．否定式是：主語(yǔ)＋didn'tuse．在英式英語(yǔ)中（了解）

它的疑問(wèn)式應(yīng)當(dāng)是：Used＋主語(yǔ)＋tosth．否定式應(yīng)當(dāng)是usednotto.1.harmful

形容詞，意為“有害的”。常構(gòu)成短語(yǔ)beharmfulto“對(duì)……有害的”。Stayingupoftenisharmfultoyourhealth.經(jīng)常熬夜對(duì)你的健康有害?！就卣埂縣arm名詞，意為“害處”。常用構(gòu)成短語(yǔ)do

harmto“對(duì)……有害”，相當(dāng)于beharmfulto.Toomuchsmokingdoesharmtohishealth.=Toomuchsmokingisharmfultohishealth.吸煙過(guò)多對(duì)他的健康有害。Languagepoints2.辨析：join,joinin和takepartintojoin加入組織，團(tuán)體，黨派等，有作為其中的一個(gè)成員的含義;后面也可以加表示人的名詞，表示和某人一起參加某活動(dòng)joinin加入一種具體活動(dòng)。takeaprtin指參加會(huì)議或群眾性活動(dòng)等，著重說(shuō)明句子主語(yǔ)參加該項(xiàng)活動(dòng)并在活動(dòng)中發(fā)揮作用。例如：Willyoujoinusinthediscussion?你參加我們的討論嗎？

ShejoinedtheYoungPioneers.她加入了少先隊(duì)。

Whydidn'tyoujoininthetalklastnight?

昨晚你為什么沒(méi)參加座談？Didyoutakepartinthesportsmeet?你參加運(yùn)動(dòng)會(huì)了嗎？3.afford的用法⑴afford是動(dòng)詞，意為“買得起,擔(dān)負(fù)得起”，通常與can,could,beableto連用,多用于否定句中。Theycouldn’tafford$50foraticket.他們拿不出50美元買一張票。⑵afford后面常跟帶to的動(dòng)詞不定式。Wecan’taffordtogoabroadthissummer.

今年夏天我們沒(méi)有足夠的錢出國(guó)。4.Notonly…butalso…意為“不但…而且…”遵循一下三個(gè)原則(a)并列連詞，連接兩個(gè)并列成分，其中also可以省略。(b)主謂一致原則：notonly…butalso..連接兩個(gè)主語(yǔ)時(shí)，謂語(yǔ)動(dòng)詞在人稱和數(shù)上要與butalso的主語(yǔ)保持一致。(c)倒裝原則：notonly…butalso…連接兩個(gè)并列分句時(shí)，notonly置于句首，表示強(qiáng)調(diào)，其引導(dǎo)的句子要用部分倒裝，即將謂語(yǔ)動(dòng)詞的一部分(情態(tài)動(dòng)詞，助動(dòng)詞等)放在句子的前面，而butalso后的句子用正常語(yǔ)序。NotonlyhebutalsoIaminterestedinpopmusic.NotonlydoIfeelgoodabouthelpingpeople,butalsoIgettospendtimedoingwhatIlovetodo.⑴needdoing=needtobedone

"需要被…"現(xiàn)在

分詞doing表被動(dòng)“需要被做”，相當(dāng)于need

tobedone。

Mywatchneedsrepairing.=Mywatchneeds

toberepaired.我的表需要修了。⑵need后加不定式，證明need為實(shí)義動(dòng)詞，而

非情態(tài)動(dòng)詞，這時(shí)need有人稱和數(shù)的變化。

Heneedstogetupearly.他需要早起。5.辨析：needtobedone;needdoing與needtodo一.根據(jù)漢語(yǔ)提示完成句子。1.我們必須采取行動(dòng)來(lái)阻止他們。

Wemust___________tostopthem.2.我從沒(méi)聽說(shuō)過(guò)這個(gè)人。

Ihavenever________suchaman.3.我們樂(lè)意盡力幫你擺脫困境。

Wearegladtodowhatwecando_________.4.到目前為止，我已經(jīng)交了二十個(gè)朋友。________,Ihavemadetwentyfriends.5.實(shí)際上，她從沒(méi)去過(guò)那兒。________,shehasneverbeenthere.In

facttake

actionheard

ofto

helpoutSofarExercises6.她扔掉了昨天的報(bào)紙。

She__________yesterday’snewspaper.7