条件句讲解课件高三英语一轮复习

CONDITIONALSENTENCEZero,first,second,thirdandmixed.CONDITIONALSENTENCEIfyoumixblueandyellow,yougetgreen.Ifyoustudyhard,youwillpasstheexam.IfIwereyou,Iwouldtakethejob.Ifshehadseenthesign,shewouldn’thaveparkedthere.SomeExamplesCONDITIONALSENTENCEConditionalsentencesconsiderimaginedoruncertainsituationsandthepossibleresultsofthesesituations.Theyhelpusexpresspossibilities,hypotheticalsituations,andconsequences.What

is？CONDITIONALSENTENCEZeroConditionalWeusethezeroconditionaltotalkaboutthingsthataregenerallytrue,suchaslawsandrules.(alsocanmakeacommandorrequest)Structure:

If/When+[presentsimple],…[presentsimple].Ifyoudon’teat,youbecomehungry.Whenyoumeltice,itturnstowater.Ifyougetlost,callme.Ifyouwanttospeaktoasalesrepresentative,dial“1.”CONDITIONALSENTENCEZeroConditional-

Exercises1.

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blankIfyou______(heat)waterto100°C,it______(boil).Ifplants______(notget)enoughsunlight,they______(die).Ifyou______(press)thebutton,themachine______(start).Ifice______(melt),it______(turn)intowater.CONDITIONALSENTENCEZeroConditional-

Exercises1.

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blankIfyou__heat__(heat)waterto100°C,it_boils_(boil).Ifplants__don’tget__(notget)enoughsunlight,they_die_(die).Ifyou_press_(press)thebutton,themachine_starts_(start).Ifice_melts_(melt),it_turns_(turn)intowater.CONDITIONALSENTENCEZeroConditional-

Exercises2.CorrectthesentencesIfyouwillheatmetal,itexpands.Ifthesunsets,itbecamedark.Ifyoutouchfire,youwouldburnyourself.Ifpeopledoesn’teat,theygethungry.CONDITIONALSENTENCEZeroConditional-

Exercises2.CorrectthesentencesIfyouheatmetal,itexpands.(Corrected)Ifthesunsets,itgetsdark.(Corrected)Ifyoutouchfire,youburnyourself.(Corrected)Ifpeopledon’teat,theygethungry.(Corrected)CONDITIONALSENTENCEZeroConditional-

Exercises3.Makesomesentences1.Describeanaturalphenomenon:If____________,____________.2.Describealiferule:If____________,____________.3.Provideapersonalhabit:If____________,____________.CONDITIONALSENTENCEFirstConditionalWeusethefirstconditionalwhenwetalkaboutfuturesituationswebelievearerealorpossible.Structure:

If+[presentsimple],…[modelverb]+[infinitive].Ifitrainstomorrow,wewill

cancelthepicnic.Ifyoustudyhard,youwill

passtheexam.Ifyoudon’tpracticeguitar,thenyouwon’t

improve.Ican

driveNicktotheairportifheneedsalift.CONDITIONALSENTENCEFirstConditional–SomepatchesFirstconditionalsentencesrefertoapossibleresultinthefuture.Infirstconditionalsentences,“unless”,“aslongas”,“assoonas”canbeusedinsteadof“if”.(e.g.,“Youwon’timproveunlessyoupracticeguitar”).Modalverbs:①will,②may,③can,④might,etc.CONDITIONALSENTENCEFirstConditional–TimelinePASTFUTUREPRESENTIfyoustudyhard,youwillpasstheexam.(presentsimple)(futuresituation)CONDITIONALSENTENCEFirstConditional–TimelinePASTFUTUREPRESENTIfitrainstomorrow,Iwilltakeanumbrella.Presentsimple(futuresituation)CONDITIONALSENTENCEFirstConditional-

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blankIfit______(rain)tomorrow,we______(cancel)thepicnic.Ifshe______(study)hard,she______(pass)theexam.Ifyou______(noteat)breakfast,you______(feel)tiredlater.Ifwe______(leave)now,we______(catch)thetrain.CONDITIONALSENTENCEFirstConditional-

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blankIfit_rains_(rain)tomorrow,we_willcancel_(cancel)thepicnic.Ifshe_studies_(study)hard,she_willpass_(pass)theexam.Ifyou_don’teat_(noteat)breakfast,you_willfeel_(feel)tiredlater.Ifwe_leave_(leave)now,we_willcatch_(catch)thetrain.CONDITIONALSENTENCEFirstConditional-

Exercises2.CorrectthesentencesIfyouwillworkhard,youachieveyourgoals.Ifwenothurry,wewillmissthemovie.Ifshegoestotheparty,shemeetingheroldfriends.Iftheweatherwillbenice,wewillgohiking.CONDITIONALSENTENCEFirstConditional-

Exercises2.CorrectthesentencesIfyouworkhard,youwillachieveyourgoals.(Corrected)Ifwedon’thurry,wewillmissthemovie.(Corrected)Ifshegoestotheparty,shewillmeetheroldfriends.(Corrected)Iftheweatherisnice,wewillgohiking.(Corrected)CONDITIONALSENTENCEFirstConditional-

Exercises3.MakesomesentencesWhatwillyoudoifyouwinthelottery?Whatwillhappenifitrainsontheweekend?Howwillyoureactifyourfriendforgetsyourbirthday?CONDITIONALSENTENCESecondConditionalWeusethefirstconditionalwhenweimaginepresentorfuturesituations

thatareimpossibleorunlikely.Structure:

If+[pastsimple],…[modelverb]+[infinitive].IfBilltalkedless,hecould

finishmoretasks.Everyonewould

beunhappyiftheflightweredelayed.IfIwonalotofmoney,I'd

buyabighouseinthecountry.Ifwehadagarden,wecould

haveacat.CONDITIONALSENTENCESecondConditional–SomepatchesSecondconditionalsareusedtorefertoanimprobableorimpossiblepast

orpresentconditionanditsunlikelyorunrealisticfutureconsequenceCONDITIONALSENTENCESecondConditional–SomepatchesThepastsubjunctiveformoftheverb

“be”is“were,”regardlessofthesubject

(e.g.“IfIwereyou,I’dcallinsick”).

Wecanusepastformsofothermodalverbsinthesecondconditionalsentencetodemonstratedifferentabilityandpossibility

(suchas:could,might)

(e.g.IfIhadacar,Icoulddriveyoutotheairport.)CONDITIONALSENTENCESecondConditional–TimelinePASTFUTUREPRESENTIfsheknewFrench,shewouldmovetoParis.(Theactualisshedoesn’tknowFrenchandshewouldn’tmovetoParis.)AnimprobablethingTheunlikelyconsequenceCONDITIONALSENTENCESecondConditional–TimelinePASTFUTUREPRESENTIfsheknewFrench,shewouldmovetoParis.(Theactualisshedoesn’tknowFrenchandshewouldn’tmovetoParis.)AnimprobablethingTheunlikelyconsequenceCONDITIONALSENTENCESecondConditional–TimelineBothisokCONDITIONALSENTENCESecondConditional-

Exercises1.

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blankIfI______(win)thelottery,I______(travel)aroundtheworld.Ifshe______(speak)Englishfluently,she______(apply)forthejob.Ifwe______(live)nearthebeach,we______(go)swimmingeveryday.Ifhe______(have)morefreetime,he______(learn)anewskill.CONDITIONALSENTENCESecondConditional-

Exercises1.

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blankIfI_won_(win)thelottery,I_wouldtravel_(travel)aroundtheworld.Ifshe_spoke_(speak)Englishfluently,she_wouldapply_(apply)forthejob.Ifwe_lived_(live)nearthebeach,we_wouldgo_(go)swimmingeveryday.Ifhe_had_(have)morefreetime,he_wouldlearn_(learn)anewskill.CONDITIONALSENTENCESecondConditional-

Exercises2.CorrectthesentencesIfIamyou,Iwouldapologizeimmediately.Iftheyknowtheanswer,theywouldtellyou.Ifshewouldpracticemore,shecanplaybetter.Ifwedidn’tmissthebus,wewouldn’tbelate.CONDITIONALSENTENCESecondConditional-

Exercises2.CorrectthesentencesIfIwereyou,Iwouldapologizeimmediately.(Corrected)Iftheyknewtheanswer,theywouldtellyou.(Corrected)Ifshepracticedmore,shecouldplaybetter.(Corrected)Ifwedidn’tmissthebus,wewouldn’tbelate.(Corrected)CONDITIONALSENTENCESecondConditional-

Exercises3.MakesomesentencesWhatwouldyoudoifyoufoundawalletfullofmoney?Howwouldyoufeelifyoumissedanimportantflight?Whatwouldhappenifnobodyrecycledwaste?CONDITIONALSENTENCEThirdConditionalWeusethethirdconditionaltoimagineachangeinapastsituationandthedifferentresultofthatchange.Structure:

If+[pastperfect],…[modelverb]have+[pastparticiple].Ifyouhadn’tburnedthepie,itwouldhavetasteddelicious.IwouldhavelabeledthefilesmoreclearlyifIhadknowntheywereimportant.Ifhehadstudiedharder,hewouldhavepassedtheexam.Theywouldhavecaughtthetrainiftheyhadarrivedearlier.CONDITIONALSENTENCEThirdConditional–SomepatchesWecanusepastformsofothermodalverbsinthethirdconditionalsentencetodemonstratedifferentpossibility

(suchas:could,might)

(e.g.Ifshehadaskedme,Icouldhavehelpedher.)Thechangeandtheresultallisinthepast,notatpresentandthefuture.CONDITIONALSENTENCEThirdConditional–TimelinePASTFUTUREPRESENTIfIhadunderstoodtheinstructionsproperly,Iwouldhavepassedtheexam.(TheactualisIdidn’tknowtheinstructionandfailedtheexam.)AchangeinthepastResultofthischangeCONDITIONALSENTENCEThirdConditional-

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blankIfshe______(wakeup)earlier,she______(catch)thebus.Ifwe______(study)harder,we______(pass)thetest.Ifthey______(notforget)thetickets,they______(see)theshow.IfI______(know)aboutthemeeting,I______(attend)it.CONDITIONALSENTENCEThirdConditional-

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blankIfshe_hadwokeup_(wakeup)earlier,she_wouldhavecaught_(catch)thebus.Ifwe_hadstudied_(study)harder,we_wouldhavepassed_(pass)thetest.Ifthey_hadn’tforgotten_(notforget)thetickets,they_wouldhaveseen_(see)theshow.IfI_hadknown_(know)aboutthemeeting,I_wouldhaveattended_(attend)it.CONDITIONALSENTENCEThirdConditional-

Exercises2.CorrectthesentencesIfIknewaboutthedeadline,Iwouldhavefinishedmyworkontime.Ifshedidn’tloseherpassport,shecouldtravelabroad.Ifwehadbookedearlier,wewillgetadiscount.Ifyoutoldmethetruth,Iwouldhavehelpedyou.CONDITIONALSENTENCEThirdConditional-

Exercises2.CorrectthesentencesIfIhadknownaboutthedeadline,Iwouldhavefinishedmyworkontime.(Corrected)Ifshehadn’tlostherpassport,shecouldtravelabroad.(Corrected)Ifwehadbookedearlier,wewouldhavegottenadiscount.(Corrected)Ifyouhadtoldmethetruth,Iwouldhavehelpedyou.(Corrected)CONDITIONALSENTENCEThirdConditional-

Exercises3.MakesomesentencesWhatwouldyouhavedoneifyouhadforgottenyourhomeworkyesterday?Howwouldyourdayhavebeendifferentifyouhadwokenupearlierthismorning?Whatwouldhavehappenedifyouhadstudiedmoreforyourlastexam?CONDITIONALSENTENCEMixedConditionalWecanusemixedconditionalswhenweimagineapastchangewitharesultinthepresentorapresentchangewitharesultinthepast.Structure:(past/present)

If+[pastperfect],…[modelverb]+[infinitive].Or(presentorpast/past)If+[pastsimple],…[modelverb]have+[pastparticiple].CONDITIONALSENTENCEMixedConditional–SomeexamplesIfIhadn'tgotthejobinTokyo,Iwouldn'tbewithmycurrentpartner.It'sreallyimportant.Ifitwasn't,Iwouldn'thavecalledyouonyourholiday.IfIdidn’thaveafearofspiders,Iwould

havepickeditup.Ifwehadleftearlier,wewould

betherebynow.CONDITIONALSENTENCEMixedConditional–SomepatchesWecanusepastformsofothermodalverbsinthemixedconditionalsentencetodemonstratedifferentpossibility

(suchas:could,might)

(e.g.Ifshehadaskedme,Icouldhavehelpedher.)CONDITIONALSENTENCEMixedConditional–TimelinePASTFUTUREPRESENTIfyouhadeatenyourdinner,youwouldn’t

behungry.(TheactualisIdidn’teatmydinnerandIamhungrynow.)AchangeinthepastResultinthepresentCONDITIONALSENTENCEMixedConditional–TimelinePASTFUTUREPRESENTIfIweremorecareful,Iwouldn’thavemadethatmistakeyesterday.(TheactualisIamnotcarefulnowandImademistakeyesterday.)AchangeinthenowResultinthepastCONDITIONALSENTENCEMixedConditional–TimelinePASTFUTUREPRESENTIfIweremoreconfident,Iwouldhavespokenupinthemeetingyesterday.(TheactualisIamnotconfidentnowandIdidn’tspeakupinthemeetingyesterday.)AchangeinthenowResultinthepastCONDITIONALSENTENCEMixedConditional–TimelinePASTFUTUREPRESENTIfyoupaidattentioninschool,youwouldhavelearnedmore.(TheactualisIdidn’tpayattentionandIdidn’tlearnmore.)AchangeinthepastResultinthepastCONDITIONALSENTENCEMixedConditional-

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blankIfhe______(notlose)hisjoblastyear,he______(be)happiernow.IfI______(study)harderinhighschool,I______(have)abetterjobnow.Ifshe______(notforget)herkeys,she______(notbe)lockedoutrightnow.Ifthey______(win)thegameyesterday,they______(celebrate)tonight.CONDITIONALSENTENCEMixedConditional-

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blankIfhe_hadn’tlost_(notlose)hisjoblastyear,he_wouldbe_(be)happiernow.IfI_hadstudied_(study)harderinhighschool,I_wouldhave_(have)abetterjobnow.Ifshe_hadn’tforgotten_(notforget)herkeys,she_wouldn’tbe_(notbe)lockedoutrightnow.Ifthey_hadwon_(win)thegameyesterday,they_wouldbecelebrating_(celebrate)tonight.CONDITIONALSENTENCEMixedConditional-

Exercises2.CorrectthesentencesIfhehadn’tbrokenhisleg,heisplayingfootballnow.Ifwehavearrived