譯林版八年級(jí)上英語(yǔ)語(yǔ)法課件匯報(bào)人：202X-12-27目錄contentsThePluralFormNounsThepresentcontinuoustenseofverbsTheusageofmodalverbscanandcouldThecomparativeandsuperlativeformsofadjectivesSentencetypesThePluralFormNouns01Ingeneral,add-sor-esafteranoun.Forexample,thepluralofbooksisbooks,andthepluralofpenispens.Nounsendingin-s,-x,-z,-sh,-ch,add-esattheendoftheword.Forexample,thepluralofbusisbuses,andthepluralofboxisboxes.weakconjugationThepluralformsofsomenounsareirregularandrequirespecialmemorization.Forexample,thepluralformanismen,andthepluralforchildischildren.Somenounshavethesamesingularandpluralforms,suchas:sheep,deer.Irregularchanges0102SpecialcircumstancesSomenounsonlyhavepluralformsandnotsingularforms.Forexample:scissors,trouser.Somenounsonlyhavesingularformsandnotpluralforms.Forexample:people,policy.Thepresentcontinuoustenseofverbs02DefinitionIndicatesanongoingactionorastateofexistence.Structurebe(am,is,are)+-ingform.DefinitionandStructureUsage:Emphasizethatanactionisoccurringorinprogress.Examplesentence:Iamreadingabook(Iamreadingabook.)Sheissinginginthenextroom(Sheissinginginthenextroom.)Theyareplayingbasketballontheplayground(Theyareplayingbasketballontheplayground.)01020304UsageandexamplesentencesDifference:Thepresentcontinuoustenseemphasizesongoingactions,whilethepresentsimpletenseindicatesfrequentlyoccurringactionsorexistingstates.Comparison:IreadbookseverydayIreadbookseverydayIamreadingabooknowIamreadingabookThedifferencefromthesimplepresenttenseTheusageofmodalverbscanandcould03Abilityrepresentation01Canrepresentscurrentability,couldrepresentspastability.Forexample:IcanspeakEnglish(IcanspeakEnglish.)Expressingpossibility02Caniscommonlyusedininterrogativeandnegativesentences,andcouldisusedinaffirmativesentences.Forexample:Canyouswim?(Canyouswim?)Request03Caniscommonlyusedtorequestpermissionfromtheotherparty,andcouldisusedtopolitelyrequest.Forexample:Can/Couldyouhelpme?(Canyouhelpme?)BasicUsageTensecanbeusedforvarioustenses,whilecanandcouldareonlyusedforpresentandpasttenses.Subjectiveandobjectivebeabletoemphasizesubjectivewillandability,whilecanandcouldemphasizeobjectivepossibilitymore.NegativeformThenegativeformofbeabletois"notbeableto",whilethenegativeformsofcanandcouldare"can't"and"coulddn't".ThedifferencebetweenbeingabletoandbeingabletoCanandcouldrepresentalowerlikelihoodlevelthanmayandmight.LikelihoodlevelThetoneofcanandcouldismoredirectandaffirmativethanmayandright.Tonecanandcouldrepresentpresentorpastabilitiesorpossibilities,whilemayandmightcanrepresentpresent,past,orfuturepossibilities.TimeThedifferencebetweenMayandMightThecomparativeandsuperlativeformsofadjectives04Therulechangesofcomparativeandsuperlativeadjectivesinclude:generalform,comparativeform,andsuperlativeform.Therulesforthecomparativeandsuperlativeformsofadjectivesareasfollows:thegeneralformis"adjectiveprototype",thecomparativeformis"adjectiveprototype+er",andthesuperlativeformis"adjectiveprototype+est".Therulechangesofcomparativeandsuperlativeadjectivesalsoincludesomespecialcases,suchassomeadjectivesendingwithaconsonantletter+y,whichneedtobechangedfromytoifirst,andthenaddedwitherorest.weakconjugation單擊此處添加正文，文字是您思想的提一一二三四五六七八九一二三四五六七八九一二三四五六七八九文，單擊此處添加正文，文字是您思想的提煉，為了最終呈現(xiàn)發(fā)布的良好效果單擊此4*25}Someadjectiveshaveirregularcomparativeandsuperlativeforms,suchas:little,less,least;Many,more,most,etc.Commonadjectiveswithirregularvariationsinclude:good/well,better,best;Bad/ill,word,word;Far,further,furthest,etc.IrregularchangesThespecialusesofcomparativeandsuperlativelevelsinclude:expressingdegree,emphasis,contrast,etc.inasentence.Whenexpressingdegree,comparativeandsuperlativesentencestructurescanbeused,suchas"Thebookismoreinterestingthanthemovie."Whenemphasizing,comparativeandsuperlativesentencestructurescanbeused,suchas"Heisthesmarteststudentintheclass."Whencomparing,comparativeandsuperlativesentencestructurescanbeused,suchas"Sheistallerthanhersister."SpecialusageofcomparativeandsuperlativelevelsSentencetypes05DeclarativesentenceAdeclarativesentenceisasentenceusedtostatefactsorexpressopinions,usuallyendingwithaperiod.SummaryAdeclarativesentenceusuallyconsistsofasubjectandapredicate,wherethesubjectrepresentstheobjectdescribedinthesentenceandthepredicaterepresentstheactionorstateofthesubject.Forexample,"Thesunrisesintheeast."DetaileddescriptionAquestionsentenceisasentenceusedtoaskaquestion,usuallyendingwithaquestionmark.SummaryAquestionsentenceisusuallycomposedofaquestionword,anauxiliaryverb,andasubject.Thequestionwordrepresentstheobjectofthequestion,theauxiliaryverbrepresentsthetoneofthequestion,andthesubjectre