初三英语语法复习情态动词行为动词PPT课件

11情态动词（Modalverb）canwouldcouldmustshouldmightwillneedIntroduction1.情态动词表示说话人对动作或状态的各种观点和态度，如需要、猜测、意愿或怀疑等。情态动词有词义，但不完全，是所谓的“辅助性”动词，在句中不能单独充当谓语。1.can/could2.may/might3.must/haveto/oughtto4.need/will/would5.shall/should1.can表示请求，允许，现在的能力和猜测。•________Igonow?(请求)•You_____parkyoucarhere.(允许)•She_____speakthreelanguages.(现在的能力)•Thenews_____notbetrue.(猜测)can,could,may,might的主要用法ReadandrememberLookandsayCan/Maycancancancould表示比can更客气的请求,把握不大的猜测。还可能表示过去的能力,但不指已经做过的某事的能力。•________Ismokehere?(请求比can更客气)•You_______beright,butIdon’tthinkyouare.(把握不大的猜测)•Whenhewasyoung,he______work24hourswithoutrest.(过去的能力)ReadandrememberCouldcouldcouldLookandsayChoosetherightanswer1.________yourepairmycar？I______notstartit.A.Would；wouldB.Must；mustC.Can；canD.May；may2.________sheridewhenshewasthreeyearsold？A.CanB.CouldC.NeedD.May3.-Whoisthemanoverthere？IsitMrLi？-No，it________behim.MrLiismuchtaller.A.mustn’tB.maynotC.can’tD.needn’t4_______youtellmehowI_______gettotheNo.19MiddleSchool?A．Do；canB．Can；couldC．Could；canD．Could；could5.You_______givemeitnextweekifyouhavenotimetomorrow.A.mayB.couldC.needD.will1)I_________(shall/will)seeyoutomorrow.2)We________(shall/will)gotoCenturyParkthisSunday.shall/should/oughtto的主要用法：Readandremembershall/willShallshallshall/will1)_____(Shall/Will)wedance?2)Let’sgotohaveapicnic,_____(shall/will)we?Shall与第一人称I,we连用表将来。Shall用于第一人称征求对方的意愿。LookandchoosetidilyintheschoolbuildingS1:Shouldtheboydresslikethis?S2:No,heshouldn’t.Heshoulddresstidily.12Lookandsayanoiseinthelibraryintheclassroom45theschooluniform3Lookandsay情态动词should一般不应被认为是shall的过去式，其主要用法如下：1.表义务，意谓“应该”。1)Weshoulddoexerciseeveryday.2)Youshouldbrushyourteethbeforegoingtobed.3)Weshouldn’tstayupsolate.Readandremember2.用于表示推测的词，意谓“可能”。如：Theyshouldarrivesoon.3.shall的过去时态,如：Weaskedifweshouldhelpher.(should否定式是shouldnot或其缩写形式shouldn’t.)should是情态动词，意为“应该”，表示应该做某种事情，或者表示现在应承担某种责任或义务，有时表示一种推测。ReadandrememberMedicineforMrLeeMrLeeshould/oughtto…MrLeeshouldn’t/oughtn’tto…GivesomeadvicetoMrLee.LookandsayMedicineforMsJonesMsJonesshould/oughtto…MsJonesshouldn’t/oughtn’tto…GivesomeadvicetoMrsJones.LookandsayMedicineforMrCollinsMrCollins…GivesomeadvicetoMrCollins.Lookandsay★oughtto后接动词原形，表责任或义务，译为“应该，应当”.★oughtto可用于否定句,其否定形式可缩略为oughtn’t.oughtto一般认为与should意思相近,其主要用法如下：Readandremembereg.Yououghttogotoseethedoctor.Weoughttostartatonce.eg.Yououghtnottosmokesomuch.Yououghtnot(oughtn’t)tosmokesomuch.Wemust/mustn’t…Wemustnotridebicycleshere.Wemustnotwalkacrosstheroad.LookandsayWemustturnleft.must/haveto的主要用法eg.1)Wemustobeyrules.2)Hemustkeepquietinthelibrary.must表必须，必要。mustnot/mustn’t译为“不应该”。eg.1)Youmustn’twastewater.2)MayItakethisbookout?No,youmustn’t.(不，不行。)Readandremembereg.---MustIgotomorrow?---Yes,_________________./No,you____________________.Readandremembermust/I’mafraidsoneedn’t/don’thavetoLookandsaymust用于一般疑问句时，其肯定答语应用。Yes,youmust或I’mafraidso,其否定答语应No,youneedn’t或No,youdon’thaveto.1.现在式为have(第三人称单数用has)toeg.MyparentshavetogotochurchonSundays.Myunclehastostartworkat8am.2.过去式为hadtoeg.Wehadtopay5yuanforthebook.Didhehavetocomebacklastnight?3.将来式will/shallhaveto4.完成式为have/has/hadhadtohaveto的含义与must相似，它有各种形式，随have的变化而定。其变化与行为动词have相同。Readandremember1Mum:Wouldyoulikesome________________?Kitty:No,thanks.Idon’tlike__________.I’dratherhavesome___________________.2Mum:_____________________________________?Kitty:Yes,please._________________________.colacolaorangejuiceWouldyoulikesomericedumplingsIlikericedumplingsLookandsay3Mum:_____________________________________?Kitty:Yes,please._________________________.4Mum:_____________________________________?Kitty:__________________________________________________________________________.WouldyoulikesomedumplingsIlikedumplingsWouldyoulikesomemooncakesNo,thanks.Idon’tlikemooncakes.I’dratherhaveahamburger.LookandsayS1:Wouldyoulikesome_____?S2:Yes,please.Ilike…/No,thanks.Idon’tlike…I’dratherhave…LookandsayI________haveameetingtomorrowafternoon.will,would的主要用法：would是will的过去式。Readandrememberwill表将来意图。will表示意愿。willYouneed’thelpme.I______doitmyself.willTheyaskedusifwe______gotherefirstnextday.wouldwould可表婉转请求,语气较will委婉。eg.1)Ineedtobuyeggseveryweek.2)Heneedstotakethemedicinethreetimesaday.3)Maryneededtocomeyesterday.4)Doessheneedtotakeherraincoat?need的主要用法：Simon,you______doyourhomeworktoday.Leaveitfortomorrow.A)needn’ttoB)notneedtoB)C)don’tneedD)don’tneedtoReadandremember★need作为实义动词时，后带to的动词不定式，有现在时第三人称词尾-s,过去分词-ed.Lookandchooseeg.1)Heneedn’tgotothepartythisevening.2)Needhegooutfordinner?You________worryaboutdifficulties.Wewillallhelpyou.A)needn’tB)needn’ttoC)don’tneedD)notneedReadandremember★need作为情态动词,后接动词原形，多用于否定句和疑问句中。Lookandchooseeg.1)Mymumneedssomemilkandbread.2）Mymumdoesn’tneedanymilkandbread.Tom_______anyhelpbecausehecanfinishtheworkontimehimself.A)doesn’tneedtoB)needtoC)doesn’tneedD)needn’ttoReadandrememberLookandchoose★need后跟名词，只能是实义动词的用法。eg.Needhetellyouwhattodo?疑问句的否定回答：No,youneedn’t.疑问句的肯定回答：Yes,youmust.-Mum,todayisFriday.MustIfinishmyhomeworknow?-No,you______.Youmayhavearestfirstandfinishittomorrow.A)mustn’tB)can’tC)maynotD)needn’tReadandre