英语语法-动词时态.ppt

PastTenseVerbs StayingonTopoftheSystem Englishhasonlytwokindsofverbs eachwiththesamethreemainparts 1 REGULARInfinitive toWALKPasttense WALKED nohelpingverbused Pastparticiple WALKED alwayswithhelpingverb 2 IRREGULARInfinitive toFLYPasttense FLEW nohelpingverbused Pastparticiple FLOWN alwayswithhelpingverb Iloveyou Iwillloveyoualways Ilovedyouinthepast butatthetimeyoudidn tloveme Ihadlovedyoulongbeforeyouspoketomeinourwritingclass Iwantedyoutolovemeformyself notformyabilitytocorrectcommasplices EveryverbtenseinEnglishisformedfromthesethreeprincipalparts Aregularverbneverchangesthemainverbitself itjustaddsadoranedwhendescribingpastactions dance dancedtalk talkedIrregularverbsareunpredictable Whendescribingpastactions theymight 1 staythesame 2 changejustapartoftheword or 3 changethewholeword cut cutgrow grewthink thought What sthedifferencebetweenaregularandanirregularverb Regularpasttenseverbs Tip 1 Remembertoaddthedoredendingstomarkthepast especiallythoseendingsthatwedon thearclearly Everyday Iwalktowork Yesterday Iwalkedtowork Forweeksnow Ihavewalkedtowork Everynight wedancetilldawn Lastnight wedancedtilldawn Onmanynights wehavedancedtilldawn REGULARpasttenseverbs Tip 2 Beextracarefulwhentheword to followsapasttenseverb it seasytoforgettheverbendingbecausewedon thearit Grammarusetobeeasy Thisissupposetobefun d d Regularpasttenseverbs Tip 3 Remembertousethe changeytoiwhenyouadd ed rule Irregularpasttenseverbs Tip 1 Someverbsstaythesameinthepresentandthepast Don tbetemptedtoaddanending 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 there salways Pastparticiplesareoftenusedasadjectives todescribeotherwords Rememberthe edending Whatistheprescribesolution thesolutionwhichsomeonehasprescribed Youseemshock somethinghasshockedyou Warning PotentialTroubleSpot d ed Trysomeout Arethereanymissingendingsbelow Sheappearstobeaveryprejudiceperson MycriticalthinkingteacherwasastonishthatIfinishedthequizsoearly Ithinkeverythingisfinallysettletoeveryone ssatisfaction d d ed Warning PotentialTroubleSpot 2 Don tconfusethepasttenseoftheirregularverbs nohelpingverb withthepastparticiple withhelpingverb Ibegunmyhomeworkearlythisweek Hehadgavemehisaddress X X Warning PotentialTroubleSpot 3 Watchthepassiveverbs acombinationofis are was were be been orbeingplusthepastparticiple Besuretousetheparticipleform Myheartisbroken notisbro