英语语法-动词时态.ppt

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,PastTenseVerbs:,StayingonTopoftheSystem!,Englishhasonlytwokindsofverbs,eachwiththesamethreemainparts.,(1)REGULARInfinitive:toWALKPasttense:WALKED(nohelpingverbused)Pastparticiple:WALKED(alwayswithhelpingverb),(2)IRREGULARInfinitive:toFLYPasttense:FLEW(nohelpingverbused)Pastparticiple:FLOWN(alwayswithhelpingverb),Iloveyou.Iwillloveyoualways.Ilovedyouinthepast,butatthetimeyoudidntloveme.Ihadlovedyoulongbeforeyouspoketomeinourwritingclass.Iwantedyoutolovemeformyself,notformyabilitytocorrectcommasplices.,EveryverbtenseinEnglishisformedfromthesethreeprincipalparts.,Aregularverbneverchangesthemainverbitself;itjustaddsadoranedwhendescribingpastactions:dancedancedtalktalkedIrregularverbsareunpredictable.Whendescribingpastactions,theymight(1)staythesame,(2)changejustapartoftheword,or(3)changethewholeword:cutcutgrowgrewthinkthought,Whatsthedifferencebetweenaregularandanirregularverb?,Regularpasttenseverbs:Tip#1,Remembertoaddthedoredendingstomarkthepast,especiallythoseendingsthatwedonthearclearly!Everyday,Iwalktowork.Yesterday,Iwalkedtowork.Forweeksnow,Ihavewalkedtowork.Everynight,wedancetilldawn.Lastnight,wedancedtilldawn.Onmanynights,wehavedancedtilldawn.,REGULARpasttenseverbs:Tip#2,Beextracarefulwhentheword“to”followsapasttenseverb;itseasytoforgettheverbendingbecausewedonthearit.Grammarusetobeeasy.Thisissupposetobefun.,d,d,Regularpasttenseverbs:Tip#3,Remembertousethe“changeytoiwhenyouadded”rule!,Irregularpasttenseverbs:Tip#1,Someverbsstaythesameinthepresentandthepast.Dontbetemptedtoaddanending.,Irregularpasttenseverbs:Tip#2,Thepasttenseof“TOBE”hasbothasingularandapluralform.Watchthesubject/verbagreement.,WhatAboutOtherTenses?,Allotherpast-tenseverbsareformedfromthepastparticipleandsomekindofahelpingverblikehas/have/had/is/was/were:Hehasaskedthe$64,000question.Thecasewasdecidedintheirfavor.Shehadwrittenaprize-winningessay.YouhavebeenselectedtoenterthePublishersClearinghousesweepstakes!,Pastparticiplesofregularverbsendindored,justasthepasttenseverbdoes.,Unfortunately,thepastparticiplesofirregularverbsareasunpredictableasthepasttenseis.,begun,become,chosen,cut,led,gone,seen,forgotten,given,done,Andjusttomakethingsreallyconfusing,theresalways,Pastparticiplesareoftenusedasadjectives,todescribeotherwords.Remembertheedending!Whatistheprescribesolution?(=thesolutionwhichsomeonehasprescribed)Youseemshock.(=somethinghasshockedyou),Warning:PotentialTroubleSpot!,d,ed,Trysomeout!Arethereanymissingendingsbelow?,Sheappearstobeaveryprejudiceperson.MycriticalthinkingteacherwasastonishthatIfinishedthequizsoearly.Ithinkeverythingisfinallysettletoeveryonessatisfaction.,d,d,ed,Warning:PotentialTroubleSpot#2!,Dontconfusethepasttenseoftheirregularverbs(nohelpingverb)withthepastparticiple(withhelpingverb).Ibegunmyhomeworkearlythisweek.Hehadgavemehisaddress.,X,X,Warning:PotentialTroubleSpot#3!,Watchthepassiveverbs(=acombinationofis,are,was,were,be,been,orbeingplusthepastparticiple).Besuretousetheparticipleform.Myheartisbroken.(notisbroke)Thecoursewaswelldesigned.(notwaswelldesign)Thereportwillsoonbewritten.(notwillsoonbewrote).,Verbsareeasy,whenyouunderstandthesystem!,Andthatsallthereistoit!,
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