Unit13SectionA課件人教版九年級(jí)英語全冊2

Unit13We’retryingtosavetheearth!SectionA1a-2d人教PEP版英語九年級(jí)全一冊Learningobjects（學(xué)習(xí)目標(biāo)）By

the

end

of

the

class,youwillbeableto…1.Learncurriculumwordsandusefulexpressions:litter,bottom,fisherman,coal,ugly,advantage...2.Talkaboutpollutionandenvironmentalprotection.3.Improveyourlisteningskillsthroughlistening

trainings.LookatthepicturesandthinkHowistheearthontheleftdifferentfromtheearthontheright?Whyisthishappeningtotheearth?pollutionnoisepollutionwhitepollutionwaterpollutionairpollutionlightpollutionsoilpollutionOurearthishurtbyallkindsofpollution.Whatkindofpollutioncanyouthinkofontheearth?Brainstorm_______pollution_______pollutionairwaterLookandfillintheblanks.Whatkindofpollutiondoesthefollowingpicturebelongto?_______pollutionnoiseHerearesomewordsrelatedtodifferentkindsofpollution.Writethemintheboxbelow.Thenaddmorewords.loudmusiccarsrubbishplaneslitteringshipsfactoriessmokingbuildinghousesmobilephones1anoisepollutionairpollutionwaterpollutionloudmusicplanesbuildinghousesmobilephonesmachinescrowdscarsplanesfactoriessmokingbuildinghousesburningpowerplantsrubbishlitteringshipsfactorieswastewaterindustrialwastenoisepollution噪音污染noise名詞，意為“噪音”，pollution為不可數(shù)名詞，意為“污染；污染物”，其動(dòng)詞形式為pollute，意為“污染”?！颈嫖觥縩oise,sound與voicenoise常指不悅耳、不和諧的嘈雜聲。sound泛指自然界的各種聲音。voice一般指人的嗓音，如說話、唱歌、談笑聲等。Beforelistening:MakeapredictionTonysuggestsgoingswimmingintheriver.ButMarkdoesn’twanttogo.Why?CanyouguessthereasonwhyMarkdoesn’twanttogoswimmingintheriver?Whatwastheproblem?Theriverwas___________.Eventhebottomoftheriverwasfullof________.Therewerenomore_____forfishermentocatch.reallydirtyrubbishfish1batthebottomof在……的底部fromtoptobottom完完全全；從頭到腳；自上而下fisherman可數(shù)名詞，意為“漁民；釣魚的人”，由“fisher（n.

漁夫）+man（n.男人）”構(gòu)成。復(fù)數(shù)形式是fishermen。Whatcausedtheproblem?Peoplearethrowing_______intotheriver.Factoriesareputting_______intotheriver.Howshouldtheproblembesolved?Weshouldwritetothe____________andaskthemto___________thefactories.Everyoneshouldhelpto_________theriver.litterwastegovernmentclosedowncleanup【辨析】litter，rubbish與wastelitter指隨手丟棄的垃圾。rubbish指任何成堆的、破損的、用過的或無用的東西。waste指任何被丟棄的東西。Listeningskill:Listentothemissingpartsandwritedownthemissingwords.Listenandanswerthequestions.1.Whydoesn’tMikewanttoswimintheriver?2.Whatwastheriverlikeinthepast?3.Whyisthishappeningtotheriver?Becausetheriverwasreallydirty.Itusedtobesoclean.Becausepeoplearethrowinglitterintotheriver.Factoriesarealsoputtingwasteintotheriver.Tony:Hey,Mark,maybewecouldgoswimmingintheriverlaterthisafternoon.Mark:Idon’tthinkIwanttogo,Tony.Tony:Whynot?Mark:Iwastherelastweekendandtheriverwasreallydirty.Eventhebottomoftheriverwasfullofrubbish,andtherewerenomorefishforfishermentocatch.Tapescripts:下午晚些時(shí)候河底Tony:Noway!Itusedtobesoclean.Infact,ithasalwaysbeenthenicestriverinthistown.Mark:Notanymore.Ithinkpeoplearethrowinglitterintotheriver.Factoriesarealsoputtingwasteintotheriver.不可能！再也不是了。Tony:That’sterrible!Weshouldwritetothegovernment.Theyshouldclosedownthefactories.Mark:Goodidea!ButIthinkeveryoneinthistownshouldhelptocleanuptheriver,too.Everyoneshouldplayapart,notjustthegovernment.關(guān)閉參與Role-playtheconversation.Thenmakeyourownconversationsaboutthekindsofpollutionin1a.1cMark:Theriverwasdirty.Eventhebottomoftheriverwasfullofrubbish.Tony:Butitusedtobesoclean!Mark:Yes,butpeoplearethrowinglitterintotheriver.Tony:Everyoneinthistownshouldplayapartincleaning

itup!usedto意為“曾經(jīng)……；過去……”，其后接動(dòng)詞原形，表示過去經(jīng)常發(fā)生的動(dòng)作或存在的狀態(tài)。used不隨人稱和時(shí)態(tài)的變化而變化。playapartin意為“參與……”，in是介詞，其后可接名詞、代詞或動(dòng)詞-ing形式。其同義短語為takepartin。Role-playTheairisdirty.Thesmokefromfactoriesisblack.Butitusedtobesocleanandfresh!

Weshouldwritetothegovernmentandaskthemtoclosedownthefactories.Yes,butpeoplearepollutingtheair.

Canyoumakeyourownconversations?Beforelistening:Let’sguess.TheintervieweristalkingwithJasonandSusan.Whatdoyouthinkthetopicoftheirconversationis?Listentotheinterview.CirclethekindsofpollutionthatJasonandSusantalkabout.2aA.landpollution

B.airpollutionC.noisepollutionD.waterpollutionListeningskill:Youdon’thavetoheareveryword.Justpayattentiontokeywords.2b1.Theairisbadlypollutedbecausethereare_____

_____ontheroadthese

days.2.Factoriesthatburncoalalso_______theair

with

alotofblacksmoke.carspollutemore3.Thereisalsotoomuchrubbishandwaste.People

_________________thingseveryday.4.Peoplearealsolitteringin____________likeparks.

Thisisturningbeautifulplacesintouglyones.arethrowingawaypublicplacesListeningskill:Markthekeywordsinthesentences.Thenlistenforthekeywordsandrecordthemissingwords.Listenandjudgetrue(T)orfalse(F).Susanthinkstheairisbadlypolluted.Susanusedtoseethestarsclearly.Therearefewercarsontheroadthesedays.Factoriesthatburncoalalsopollutetheairwithalotofblacksmoke.There’stoomuchrubbishandwasteinthestreets.JasonmoreTapescripts:Interviewer:Todaywe’retalkingtoJasonandSusanaboutenvironmentalproblems.JasonandSusan,canyoutellusaboutsomeoftheproblemsyou’veseen?Jason:Ithinkoneproblemisthattheairisbadlypolluted.Ihardlyeverseeblueskiesanymore.Susan:Yes,andIusedtoseethestarsclearly.Interviewer:Whatdoyouthinkhascausedthisproblem?Susan:Well,therearemorecarsontheroadthesedays.Jason:Andfactoriesthatburncoalalsopollutetheairwithalotofblacksmoke.Interviewer:Whatotherproblemsdoyousee?Susan:Iguessthere’stoomuchrubbishandwasteinthestreets.①②Jason:Yes!Everydaypeoplearethrowingawaythingslikewoodenchopsticks,plasticbowlsandplasticbags.Susan:They’realsolitteringinpublicplaces,forexample,duringpicnicsinparks.Thisisturningbeautifulplacesintouglyones.Interviewer:You’reright.Theseareseriousproblemsforourenvironment.Next,let’stalkaboutthethingswecandotohelp.③④Usetheinformationin2aand2btorole-playconversationsbetweenJasonandSusan.2cThereistoomuchrubbishandwasteinourcity.Yes,peoplearelitteringinpublicplaces.Workinpairsandimitatethedialoguebelowtotalkabouttheenvironmentalproblemsyou’veseen.......Thisisturningbeautifulplacesintouglyones.Lookatthepictureandpredict.Whoisthegirl?Whatisshedoing?What’stheconversationabout?Readandanswer1.How

many

people

are

being

interviewed?

Who

are

they?2.What

kinds

of

pollution

are

talked

about

in

the

interview?Two.They

are

Jason

and

Susan.Air

pollution

and

waste

pollution.PollutionWaystosolvetheproblemairpollutionwastepollutionBringa____togoshopping.bagwoodenTakethebus,______orrideabikeinsteadofdriving.plasticrubbishNevertake______chopsticksor_____forkswhenbuyingtakeawayfood.Throw________inthebins.subway2dRole-playtheconversation.Interviewer:JasonandSusan,whatareyourideas

forsolvingtheseproblems?

Jason:Well,tocutdown

airpollution,weshould

takethebus

orsubwayinsteadofdriving.

Susan:Yeah,orrideabike.Thereareother

advantagesof

bikeriding.It’sgoodfor

healthanditdoesn’tcostanything!insteadof意為“代替，而不是”，其后一般接名詞、代詞或動(dòng)詞-ing形式作賓語。instead是副詞，意為“代替；相反”，常位于句首或句末作狀語。cutdown“動(dòng)詞＋副詞”型短語，意為“削減；縮?。ǔ叽?、數(shù)量或數(shù)目）”。havean/theadvantageover勝過……takeadvantageof利用……begoodfor對……有益Sth.cost(s)(sb.)+金錢.某物花費(fèi)（某人）多少錢。Interviewer:Greatideas!Whataboutwastepollution?

Susan:Mmm,Ithinksimplethingslikebringing

abagtogoshopping

canhelp.Istarted

doingthatayearago.

Jason:Me,too.Also,InevertakewoodenchopsticksorplasticforkswhenIbuy

takeawayfood.Iusetheonesathome.可數(shù)名詞，意為“外賣食物”。

Susan:Andremembertothrowrubbishinthe

binsandkeep

publicplacescleanand

beautifulforeveryone.Interviewer:Sotogether,ouractionscanmakeadifferenceandleadtoabetterfuture!makeadifference意為“影響；有作用”。makeadifferenceto意為“對……產(chǎn)生影響”。difference前面可加修飾語，如big,great等，表示影響的程度。leadto意為“引起（結(jié)果等）；通向（某地）”。remembertodosth.記得去做某事（事情還沒有做）rememberdoingsth.記得做過某事（事情已經(jīng)做了）WatchandreadRetelltheconversationaspromptedbelow.WaystocutdownairpollutiontakethebustakethesubwayrideabikeWaystocutdownwastepollutionbringabagtogoshoppingneverusewoodenchopsticksorplasticforksthrowrubbishinthebinsSummaryWords&phrases:litter,bottom,fisherman,coal,ugly,advantage,cost,wooden,plastic,makeadifference,insteadof...Sentences:①Everyoneinthistownshouldplayapartincleaningitup!

②Tocutdownairpollution,weshouldtakethebusorsubway

insteadofdriving.③Ouractionscanmakeadifferenceandleadtoabetterfuture!Protectingourenvironmentisadutyforeveryone.Unit13We’retryingtosavetheearth!SectionA3a-3b人教PEP版英語九年級(jí)全一冊By

the

end

of

the

class,youwillbeableto…1.Learncurriculumwordsandusefulexpressions:shark,fin,cruel,harmful,chain,ecosystem...2.ReadthearticleSavetheSharks!andunderstand

thegeneralideaofthearticle.3.Improveyourreadingskillsthroughthislesson.Learningobjects(學(xué)習(xí)目標(biāo))FreetalkCanyouthinkofsomerareanimalsinourcountry?Whyshouldweprotecttheserareanimals?EnjoysomepicturesDiscussionWhatdoyouknowaboutsharks?Doyouthinksharksareendangered?Why?Whatdoyouthinkmighthavecausedafallinthenumberofsharks?Saveme!1.Whatcanyouseeinthepicture?2.Whatmaythepassagetalkabout?Ashark.Itmaytalkaboutsharks.Beforereading:Lookatthepicture&titleandmakeaprediction.Readingskill:Guessthegeneralideaofthearticlefromthepictureandthetitle.Paragraph1Paragraph2Paragraph3Fastreading:Matcheachparagraphwiththegeneralidea.◆Weshouldsavethesharks.◆Sharkfinsoupispopular.◆Sharksareendangeredbecauseofpeople’skilling.Readingskill:Skimthepassageandfindthetopicsentenceorgeneralideaofeachparagraph.Task1:ReadPara.1andjudgethesentence.(TorF)You’rekillingawholesharkwhenyouenjoyabowlofsharkfinsoup.CarefulreadingReadingskill:Readthetextcarefullyandfindoutthesourcesofthesentencesinthetexttomakesurethedetailsarecorrect.Task2:ReadParas.1&2.Findthereasonwhythenumberofsharksfallsandfillinthechart.Peopleenjoy_____________________.Fishermen___________,______________,then_____________________________.________________________________havefallenbyover90percentinthelast20to30years.abowlofsharkfinsoupcatchsharkscutofftheirfinsthrowthembackintotheoceanThenumbersofsomekindsofsharksTask3:ReadPara.2andfindtheresultsofkillingsharks.ResultsofkillingsharksForasharkForsharkgroupsForoceanecosystemWithoutafin,asharkcan__________________________________.Thenumbersofsomekindsofsharks_____________inthelast20to30years.Ifthenumbersofsharksdroptoolow,itwillbring_______toalloceanlife.nolongerswimandslowlydieshavefallendangerReadingskill:Scanthesecondparagraphandpayattentiontograspthemissinginformation.Actionto_________________WildAidandtheWWFGovernmentsIndividualareteachingthepublicabout“finning”.developlawstostopthesaleofsharkfins.helpsavethesharks.protectthesharksReadingskill:Scanthethirdparagraphandsummarizeinformationbyunderstandingthetext.3aNumberofsharkscaughtandtradedeveryyearHowgovernmentscanhelpTwoenvironmentalgroupsagainst“finning”Around70millionTodeveloplawstostopthesaleofsharkfinsWildAidandtheWWFagainst介詞，在此處意為“反對”。beagainst(doing)sth.意為“反對（做）某事”。Manyhaveheardofsharkfinsoup.Butdoyourealizethatyou’rekillingawholesharkeachtimeyouenjoyabowlofsharkfinsoup?hearof意為“聽說﹔了解；知道”，強(qiáng)調(diào)從他人那里得到的消息。同義短語為hearabout。Savethesharks!Whenpeoplecatchsharks,theycutofftheirfinsandthrowthesharksbackintotheocean.Thisisnotonlycruel,butalsoharmfultotheenvironment.Withoutafin,asharkcannolongerswimandslowlydies.Sharksareatthetopofthefoodchainintheocean’secosystem.Iftheirnumbersdroptoolow,itwillbringdangertoalloceanlife.Manyatthetopof意為“在……頂部或頂端”。反義短語：atthebottomof在……的底部或底端beharmfulto…對……有害cruel形容詞，意為“殘酷的；殘忍的”。becrueltosb./sth.意為“對某人/某物殘忍”。thefoodchain食物鏈believethatsharkscanneverbeendangeredbecausetheyarethestrongestintheirfoodchain.Butinfact,around70millionsharksarecaughtandtradedinthisindustryeveryyear.Thenumbersofsomekindsofsharkshavefallenbyover90percentinthelast20to30years.can在此句中意為“可能”，表推測﹐常用于否定句或疑問句中。can’tbe意為“不可能是”。辨析endangered,dangerous與dangerendangered形容詞，意為“瀕危的;瀕臨滅絕的”；dangerous形容詞，意為“危險(xiǎn)的”；danger名詞﹐意為“危險(xiǎn)；威脅”。infact意為“事實(shí)上；實(shí)際上”。一般位于句首或句中。fallby意為“下降了……”，其中by作介詞，表示變化的幅度。thenumbersof...意為“……的數(shù)量”，是固定短語thenumberof的復(fù)數(shù)形式。此處numbers表示不同種類的鯊魚的數(shù)量。percent名詞，意為“百分之……”。僅用在基數(shù)詞后﹐無論基數(shù)詞數(shù)值為多少，percent都用單數(shù)形式。Environmentalprotectiongroupsaroundtheworld,suchasWildAidandtheWWF,areteachingthepublicabout“finning”.Theyhaveevenaskedgovernmentstodeveloplawstostopthesaleofsharkfins.Sofar,noscientificstudieshaveshownthatsharkfinsaregoodforhealth,sowhyeatthem?Helpsavethesharks!制定法律sofar意為“到目前為止；迄今為止”，常與現(xiàn)在完成時(shí)連用?！就卣埂縮cientific的相關(guān)詞:scientificadj.

科學(xué)上的；科學(xué)的sciencen.

科學(xué)scientistn.科學(xué)家聽說；了解；知道對……有害在……頂部或頂端食物鏈?zhǔn)聦?shí)上；實(shí)際上……的數(shù)量下降了……制定法律到目前為止；迄今為止beharmfultoatthetopofthefoodchainhearofinfactthenumbersof...fallbysofardeveloplawsSummarizethekeyphrasesPara.1:AnintroductiontotheproblemPara.2:Reasonsforstopping“finning”Para.3:Helpsavethesharksa

bowl

of

shark

fin

soup→killing

a

whole

sharkcutofftheirfinsandthrowthesharksbackintotheoceancruelandharmfultotheenvironment→bringdangertoalloceanlifearound70millionsharksarecaughtandtradedeveryyearthenumbersofsomekindsofsharks→havefallenby→inthelast20to30yearsenvironmentalprotectiongroupsteachingthepublicabout“finning”askedgovernmentstodeveloplawstostopthesaleofsharkfinsnoscientificstudieshaveshownthatsharkfinsaregoodforhealthPassagestructure:SavetheSharks!Readthepassageagainandfillintheblankswiththewordsinthebox.3bsoalthoughifbutwhen1.Manypeopledonotrealizetheyarekillingawholeshark_______theyenjoyabowlofsharkfinsoup.2.Sharksareatthetopofthefoodchain,____iftheir

numbersdrop,theocean’secosystemwillbein

danger.whensosoalthoughifbutwhen3.Manythinkthatsharksaretoostrongtobe

endangered,____theyarewrong.4.________therearenoscientificstudiestosupport

this,alotofpeoplebelievethatsharkfinsare

goodforhealth.5.Sharksmaydisappearoneday___wedonotdo

somethingtostopthesaleofsharkfins.butAlthoughifLet’sdothistoretellthetext!Somepeopleliketoeatsharkfinsoup.Butgettingtheshark’sfinisvery_____.Whenpeoplecatchsharks,they______theirfinsand______thesharks______theocean.Theshark______diesbecauseitcan’t_______withoutthefin.throwintocruelcutoffslowlyswimAnditisalso_________totheenvironment.Sharksareatthe____ofthefoodchain.If______________sharksdroptoo____,itwillbreak___________________nature.Pleasesaynoto______thesharkfinsoup,and___________tosavethesharks!harmfultopthenumbersoflowthebalanceofeatingtakeactionPostreading:Howcanweprotectouranimals?

Weshouldraisepeople’sawarenesstoprotect

animalsandourenvironment.Weshouldnotwearorbuyclothesmadeofanimals’fur.Weshouldnoteatwildandendangeredanimals.Weshouldprotecttheirlivingenvironment....Curriculumwords:shark,fin,cruel,harmful,chain,ecosystem,industry,law,scientificUsefulexpressions:beharmfulto,atthetopof,thefoodchain...Sentences:Iftheirnumbersdroptoolow,itwillbringdangertoall

oceanlife.Butinfact,around70millionsharksarecaughtand

tradedinthisindustryeveryyear.SummaryNobuying,nokilling.Protectinganimalsiseveryone’sresponsibility.Unit13We’retryingtosavetheearth!GrammarFocus-4c人教PEP版英語九年級(jí)全一冊Learningobjects(學(xué)習(xí)目標(biāo))By

the

end

of

the

class,youwillbeableto…1.Learncurriculumwordsandusefulexpressions:takepartin,afford,turnoff,reusable,payfor...2.SummarizegrammarsaboutPresentprogressive,

usedto,Passivevoice,Presentperfect,Modalverbs.用括號(hào)內(nèi)所給動(dòng)詞的適當(dāng)形式填空并說出填空部分涉及哪種語法內(nèi)容。1.Look!

Kate_________(dance)

with

her

friends

under

thetree.

2.My

aunt___________(work)

as

a

nurse

since

10

yearsago.

She

is

good

with

patients.is

dancinghas

workedPresentprogressivePresentperfectstaytakingbebroughtwasboughtusedtoModalverbsPassivevoiceGrammarFocusWe’retryingtosavetheearth.PresentprogressiveTheriverusedtobesoclean.usedtoTheairisbadlypolluted.PassivevoiceNoscientificstudieshaveshownthatsharkfinsaregoodforhealth.PresentperfectWeshouldhelpsavethesharks.Modalverbs一、現(xiàn)在進(jìn)行時(shí)表示現(xiàn)在正在進(jìn)行或發(fā)生的動(dòng)作，也表示現(xiàn)階段或當(dāng)前一段時(shí)間內(nèi)正在進(jìn)行的動(dòng)作。1.概念2.基本結(jié)構(gòu)3.標(biāo)志詞now,atthistime,thesedays,atthemoment,listen,look等be動(dòng)詞(am/is/are)+動(dòng)詞-ing形式1.我們現(xiàn)在正在河里游泳。2.聽！琳達(dá)正在唱一首動(dòng)聽的歌。

3.近來，鯊魚正面臨著艱難的生存環(huán)境。We

are

swimming

in

the

river

now.Listen!Linda

is

singing

a

beautiful

song.Sharks

are

facing

hard

living

conditions

thesedays.翻譯下列句子?！就卣埂坷洌好魈旖芸藢⑶巴虾！ack

is

leaving

for

Shanghai

tomorrow.下列動(dòng)詞通常不用于現(xiàn)在進(jìn)行時(shí)：①表示感覺或感情的動(dòng)詞，如smell,taste,seem,

like,love,wish,hope等；②表示記憶、理解或決定等的動(dòng)詞，如remember,

understand,decide,believe等﹔③表示擁有或占有的動(dòng)詞，如have,belong,own等。二、現(xiàn)在完成時(shí)表示過去發(fā)生的動(dòng)作對現(xiàn)在造成的影響或動(dòng)作從過去某個(gè)時(shí)間開始，一直延續(xù)到現(xiàn)在（包括現(xiàn)在在內(nèi)）并可能繼續(xù)延續(xù)下去。1.概念2.基本結(jié)構(gòu)3.標(biāo)志詞recently,since...,for...,inthepastfewyears等have/has+動(dòng)詞的過去分詞buy

→have

borrow→keep

join→be

a

member

of finish→be

overdie→be

dead

leave→be

away

begin→be

on

fall

asleep

→be

asleepopen→be

open【拓展】比較現(xiàn)在完成時(shí)與一般過去時(shí)：現(xiàn)在5年過去hasbeenateacher將來例句：他當(dāng)老師5年了。（5年前到現(xiàn)在一直是老師）He

has

been

a

teacher

for

5

years.現(xiàn)在5年過去workedasateacher將來例句：他當(dāng)了5年老師。（現(xiàn)在不是老師了）

Heworkedasateacherfor5years.三、被動(dòng)語態(tài)表示主語是謂語動(dòng)詞動(dòng)作的承受者，其基本結(jié)構(gòu)為“be動(dòng)詞+及物動(dòng)詞的過去分詞”。1.概述2.構(gòu)成時(shí)態(tài)被動(dòng)語態(tài)的結(jié)構(gòu)am/is/are+及物動(dòng)詞的過去分詞was/were+及物動(dòng)詞的過去分詞will/shallbe+及物動(dòng)詞的過去分詞一般現(xiàn)在時(shí)一般過去時(shí)一般將來時(shí)am/is/are+being+及物動(dòng)詞的過去分詞現(xiàn)在進(jìn)行時(shí)have/hasbeen十及物動(dòng)詞的過去分詞現(xiàn)在完成時(shí)例句：所有的習(xí)題必須在放學(xué)前做完。All

the

exercises

mustbe

finished

before

school

is

over.含情態(tài)動(dòng)詞的被動(dòng)語態(tài)的結(jié)構(gòu)為“情態(tài)動(dòng)詞+be+及物動(dòng)詞的過去分詞”?！就卣埂?.主動(dòng)語態(tài)轉(zhuǎn)化為被動(dòng)語態(tài)的步驟將主動(dòng)語態(tài)的賓語變成被動(dòng)語態(tài)的主語。第一步第二步第三步把主動(dòng)語態(tài)中的謂語動(dòng)詞變?yōu)椤癰e動(dòng)詞+及物動(dòng)詞的過去分詞”。把主動(dòng)語態(tài)中的主語變?yōu)楸粍?dòng)句中介詞

by的賓語。4.不能使用被動(dòng)語態(tài)的情況“used

to十動(dòng)詞原形”，意為“過去常?！?，表示過去習(xí)慣性的動(dòng)作或狀態(tài)，現(xiàn)在已不存在。1.概述四、used

to的用法2.句式結(jié)構(gòu)主語+used

to+動(dòng)詞原形+其他.主語+didn’tuseto+動(dòng)詞原形+其他.主語+usedn’t

to+動(dòng)詞原形+其他.Did+主語+useto+動(dòng)詞原形+其他?Used+主語+to+動(dòng)詞原形+其他?一般疑問句反意疑問句附加疑問句部分用“did/didn’t+主語”或“used/usedn’t+主語”否定句肯定句表示說話人對所述動(dòng)作或狀態(tài)的態(tài)度或看法。情態(tài)動(dòng)詞無人稱和數(shù)的變化，不能單獨(dú)使用，其后接動(dòng)詞原形，構(gòu)成謂語。否定形式的構(gòu)成是在情態(tài)動(dòng)詞后面加not。五、情態(tài)動(dòng)詞1.概念2.基本用法情態(tài)動(dòng)詞意義及用法意為“能；會(huì)”，表示能力，此時(shí)could

為can的過去式。意為“可以”，表示請求、許可，此時(shí)could不是can的過去式，而是表示更委婉、客氣的語氣。意為“可能”，can表示推測，常用于否定句或疑問句中。can/could(1)情態(tài)動(dòng)詞can/could(2)情態(tài)動(dòng)詞m