牛津深圳版初二英语上册语法讲解 Unit 7 条件状语从句Word文档下载推荐.docx
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一般现在时
情态动词（may/can/should/must+动词原形）
祈使句（动词原形开头）
（1）if从句用一般现在时，主句用一般将来时（主将从现）
Ifheruns,he’llgetthereintime.
如果他用跑的，他就会及时赶到那儿。
（2）if从句用一般现在时，主句用may/can/should/must+动词原形（主情从现）
Ifitstopssnowing,wecangoout.
如果雪停了，我们就可以出去。
Ifyouwanttoloseweight,youmust/shouldeatlessbread.
如果你想减肥，你必须少吃面包。
（3）if从句用一般现在时，主句用祈使句（主祈从现）
Putonyourcoatifyourarecold.
如果你冷的话，穿上外套吧。
Ifitrainstomorrow,pleasestayathome.
如果明天下雨的话，请待在家里
（4）if从句用一般现在时表示的动作，导致主句动作的必定发生，主句用一般现在时（主现从现）
4.if的双重用法
if可以引导条件状语从句，意为“如果”，此时需注意“主将从现”的原则
Ifitrainstomorrow,Iwon’tcome.
if也可以引导宾语从句，意为“是否”，时态选用相对比较自由，不受“主将从现”原则的限定
Idon’tknowifitwillraintomorrow.
Unless引导的条件状语从句
◆◆unless引导的条件状语从句：
unless=if…not“除非......否则,如果不”
①Let'
sgooutforawalkunlessyouaretootired.
=Ifyouarenottootied,let'
sgooutforawalk.我们出去散步吧，除非你太累
②Youwillfailtoarrivethereintimeunlessyoustartearlier.=Ifyoudon’tstartearlier,youwillfailtoarrivethereintime.如果你不早点动身,你就不能及时赶到那儿。
③Unlessitrains,thegamewillbeplayed.
=Ifitdoesn’train,thegamewillbeplayed.除非下雨,比赛将照常进行。
④Mybabysisternevercriesunlesssheishungry.
=Mybabysisternevercriesifsheisn’thungry.我的妹妹不会乱哭，除非她饿了。
注意：
unless引导的条件状语从句也要遵循“主将从现”，“主祈从现”及“主情从现”的规则。
综合练习
一、单选题
（）1.—Idon'
tknowifit______tomorrow.
—Well,ifit______,theschoolsportsmeetwillbecanceled.
A.willrain,willrainB.rains,willrain
C.willrain,rainsD.rains,rains
（）2.We______forapicnicifit______rainthisSunday.
A.willgo,doesn'
tB.willgo,won'
tC.go,doesn'
t
（）3.Iwonderifshe______mewhen______.
A.calls,shearrivesB.willcall,shearrivesC.calls,willshearrive
（）4.—CouldyoutellmewhenMr.Li______inDaqing?
—Sure.Whenhe______,I'
llcallyou.
A.comes,comesB.willcome,comes
C.comes,willcomeD.come,comes
（）5.Weplantohaveapicnictomorrow,soIwonderif______.
A.willitrainB.itrainsC.itwillrain
（）6.Ifyouclosethedoorofsadnessbehindyou,thedoorofhappiness______beforeyou.
A.openedB.haveopenedC.willopenD.areopening
（）7.—CanyouguessifMike______swimmingthisafternoon?
—Ithinkhewillgowithusifhe______free.
A.willgo,isB.willgo,willbeC.goes,isD.goes,willbe
（）8.Ithinkit'
snecessaryformydaughtertohaveherownmobilephone,forIsometimeswanttomakesureifshe______homefordinner.
A.comeB.comesC.hascomeD.willcome
（）9.I'
mnotsureifhe___inthisexam.Butifhe___harder,hewilldobetter.
A.succeeds,worksB.willsucceed,willwork
C.willsucceed,worksD.succeeds,willwork
（）10.Jeff____thehospitalifhefeelsbetterinafewdays.
A.leavesB.leftC.willleaveD.hasleft
（）11.—Doyouknowwhattimeyouruncle_____Hangzhoutomorrow?
—At2:
00p.m.Iwillmeethimwhenhe_____attheairport.
A.getsto,arrivesB.willgetto,willarrive
C.willgetto,arrivesD.getsto,willarrive
（）12.—Hi,doyouknowifTom_____tomypartynextweek?
—Ithinkhewillcomeifhe____free.
A.willcome,willbeB.willcome,is
C.come,isD.come,willbe
（）13.We'
renotsureifit_____tomorrow.Ifit_____,wewon'
tgohiking.
A.willrain,rainsB.willrain,willrain
C.rains,rainsD.rains,willrain
（）14.It_____long____weknowtheresultoftheexperiment.
A.willnotbe,beforeB.is,since
C.willnotbe,untilD.hasbeen,after
（）15.It'
sbeyonddoubt___itwill___laterintheday.Takearaincoatwithyou.
A.that,berainB.whether,berain
C.that,berainyD.if,haverain
当堂练习
（）1.—Doyouknowwhen_____yourparents?
—Idon'
tknow.Butifthey_____,Iwilltellyou.
A.willcome,comeB.willcome,
willcome
C.come,willcomeD.come,come
（）2.—Amy,doyouknowifDaniel_____tothefarmwithustomorrowifit____?
—Sorry,I'
venoidea.
A.willgo,willrainB.willgo,rains
C.goes,willrainD.goes,rains
（）3.Ihearthere____atalkonthehistoryofChinaatthehall____April20th.
A.willhave,inB.willbe,on
C.isgoingtohave,untilD.isgoingtobe,at
（）4.—Doyouknowwhenyourmother_____?
tknow.Butifshe_____,I'
lltellyou.
A.willcome,comesB.willcome,willcome
C.comes,willcomeD.comes,comes
（）5.—Theradiosaysit_____alottomorrow.
—That'
stoobad.It_____soofteninsummerinSuqian.
A.willrain,rainsB.rains,willrain
C.willrain,isgoingtorainD.rains,rains
（）6.—Mum,doyouknowifDad_____amodelplaneforme?
—Ithinkhewilldoifhe_____free.
A.willmake,willbeB.makes,is
C.makes,willbeD.willmake,is
（）7.Mike______thegoodnewstohismotherassoonashe______hismotherafterschool.
A.willtell;
seesB.tells;
sees
C.tell;
seeD.willtell;
willsee
（）8.Wewillgoforapicnic_______itissunnytomorrow.
A.whenB.whetherC.ifD.while
（）9.Mariawillspendtimewithherfamilyassoonasshe_____time.
A.willhaveB.haveC.hasD.had
（）10.ThetrafficinShanghaiwillbecomebetterifeveryonethetrafficrules.
A.willobeyB.isobeyingC.obeyD.obeys
（）11.IfMarylatetomorrow，theteacherwon'
tletherin.
A.isB.willbeC.beD.was
（）12.Iwon'
tgotoLinda'
spartyunless.
A.Iwillbeinvited
B.Iaminvited
C.Iwillnotbeinvited
D.Iamnotinvited
（）13.JameswiththeGreenstheWhiteTowerParkifittomorrow.
A.aregoingto;
isn'
trainy
B.aregoingto;
doesn'
train
C.isgoingto;
won'
D.isgoingto;
trainy
（）14.—Whatwillyoudo_______itdoesn'
traintomorrow.
—We'
llhaveapicnic.
A.untilB.becauseC.ifD.though
（）15.—Frankcouldwepainttheroomtogethertomorrow?
—Sure,ifI______freetomorrow.
A.beB.willbe
C.amD.amgoingtobe
课后巩固
（）1.—Shallwegoforapicnictomorrow?
—Ifitrain.
A.isn'
tB.won'
tC.don'
tD.doesn'
t
（）2.IwillwatchTVinsteadofswimmingoutsideassoonasittomorrow.
A.rainsB.willrain
C.rainedD.haverained
（）3.Ifit_______tomorrow,weshallgoonfoot.
A.notrainB.don'
C.rainD.doesn'
train
（）4.Mybrotherwilldothisjobbetterifhe______howtouseacomputer.
A.willknowB.knowsC.knowD.knew
（）5.—Whatareyougoingtodothisweekend,Daming?
—Iwillhaveapicnicwithmyfriendifit.
A.rainsB.won'
C.doesn'
trainD.isn'
（）6.—Yourauntwillwalkthedogtomorrowmorning.
—Yeah,unlessbadweather________her.
A.stopsB.willstopC.tostopD.stop
（）7.Iwillsendyouane﹣mai1assoonasI_____inAustralia.
A.arriveB.arrived
C.amarrivingD.willarrive
（）8.MysisterhaslearnedEnglish.
A.fortwelveyearsagoB.sinceshewasfour
C.twelveyearsagoD.attheagooffour
（）9.Don'
tworryaboutme,mum.I'
llwritetoyouassoonasIschool.
A.willgettoB.arriveat
C.willreach
（）10.Wewillgocampingifit_______tomorrow.
A.won'
trainB.doesn'
C.didn'
training
（）11.Cindywilldoabetterjobifshe_______overandoveragain.
A.willpracticeB.practiced
C.practicesD.haspracticed
（）12.Itwasnotuntilshehadfinishedallherwork_____home.
A.didshereturnB.thatshereturned
C.whenshereturnedD.thatdidshereturn
（）13.Iwillgooutforawalkaftersupper,ifit______.
A.didn'
trainB.won'
C.isn'
trainingD.doesn'
（）14.Theywillnotgototheconcertifit_______tomorrow.
A.willsnowB.snowedC.snowsD.snow
（）15.—I’llgotothezooifit________tomorrow.Willyougowithme?
—Sure.
A.doesn'
trainB.isn'
training
C.won'
trainD.didn'
参考答案
1-5CABBC6-10CADCC11-15CBAAC
1-5ABBAA6-10DACCD11-15ABCCC
1-5DADBC6-10AABBB11-15CBDBA
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