if 条件状语从句练习.ppt

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1、一、时态如果主句是一般将来时态，这时从句不可以用将来时态，而要用一般现在时。例如：　Iwon’tgotherewithyouifitrainstomorrow.如果明天下雨的话，我就不和你一起去那儿了。二、主从句的位置大多数情况下，从句可以位于主句之前，也可以位于主句之后。不过从句在前时，主从句之间必须用逗号隔开。例如：　　Pleasetellmeifhecomesback.=Ifhecomesback,pleasetellme.如果他回来了，请告诉我一声。三、if的两面性if引导条件状语从句时意为“如果”，如果引导宾语从句则意为“是否”。请比较：　　1

2、)Wewillgooutifitisfinetomorrow.　　2)Idon’tknowifthetrainhasarrived.　　句1)中if引导的是状语从句。这个从句表示“条件”，整个句子的意思是“如果明天天气好，我们就出去”。句2)中if引导的是宾语从句，充当谓语动词don’tknow的宾语，整个句子的意思是“我不知道火车是否到了”。1.Ifit______sunnytomorrow,I____boating.A.isgoB.willbe,goC.is,willgoD.willbe,willgo2.----Whatwillyoudoifit___

3、___tomorrow,----I’llstayathomeandwatchTV.A.rainB.rainsC.willrainD.israiningRunfast,oryou’llbelateforschool._____you___________fast,you’llbelateforschool.2.Youcanbuythedictionaryifyoutakeenoughmoneywithyou.Takeenoughmoneywithyou,_________________buythedictionary.3.Ifthereisnoair,none

4、ofuscanlive.Noneofuscanlive________________.Ifdon’trunandyoucanwithoutairif条件状语从句的时态练习1.Diana(willgo/go/goes)toEuropeifshe(willpass/pass/passes)theexams.2.Thegraduates(willteach/teach/teaches)inthepoorvillageiftheteacher(willagree/agree/agrees)soon.3.Ifthere(willbe/are/is)acaraccide

5、nt,they(willcall/call/calls)110forhelpatonce.4.Ifit(won’t/don’t/doesn’t/isn’t)rainy,we(willtake/take/takes)walkoutside.5.IfaUFO(willland/land/lands)infrontofme,I(willgo/go/goes)intolookforthealien.willgopasseswillteachagreeswillgolandswilltakeisn’twillcallis6.Ifhe(willhave/have/has)

6、money,he(willbuild/build/builds)asciencelab.7.Don’twaitformeifI(am/willbe)late.8.They(won’t/don’t)gotothebeachifit(willrain/rain/rains).9.I(willcall/call)youifhe(willstay/stay/stays)athome.10.Mr.Smith(willlet/let/lets)youknowifhe(willneed/need/needs)help.11.(Will/Do/Does)hevisitthem

7、useumifhe(won’t/don’t/doesn’t)get tired?12.Where(will/do/does)theyliveifthey(willmiss/miss/misses)thebus?rainsmisseswilldoesn’tWillneedswillletstayswillcallwon’tamwillbuildhas1.Ifyou_____totheparty,you’llhaveagreattime.A.willgo B.went C.go  D.going2.Itwillbealongtime____Peter_____hi

8、swork.since,hasfini