条件状语从句2

状语从句复习条件状语原因状语目的状语地点状语比较状语结果状语时间状语让步状语方式状语引导条件状语从句的连接词主要有：if(如果)、unless(除非)或aslongas(只要)等。unless在意思上等于if...not。条件状语从句Ifyoucoolwater,itturnsintoice.①②ifclause从句mainclause主句•1.Ifyouheatmetal,itmelts.•2.Waterturnsintoiceifyoucoolit.ifclause从句mainclause主句从句主句从句主句从句在主句前时，____（用/不用）逗号隔开当主句在前时，则____（用/不用）逗号不用用Ifyoudropaglass,itbreaks.Ifyouheatice,itmelts.Ifyoustandintherain,yougetwet.主句和从句都用_____________(时态)因为if引导的条件句说的是_____________一般现在时客观事实/普遍现象•由例句我们可以知道：•如果if引导的条件句谈论的是一种____________时，主句谓语动词便不用shall/will+动词原形，而直接用_______时的动词形式。真理/客观事实一般现在1、引导条件状语从句最常用的连词是if,由if引导的条件状语从句表示在某种条件下某事很可能发生。Ifyouaskhim,hewillhelpyou.Ifyoufailintheexam,youwilllethimdown.条件状语从句I________(stay)athomeifit_______(rain)tomorrow.Ifhe____________(notcome),I_____________(go)swimmingalone.•由例句我们可以知道：•在if引导的条件状语从句中，如果从句谈论的是一个有可能发生的事实以其产生的相关结果，从句用_____________,主句用_______________.一般现在时态一般将来时态(主将从现)willstayrainsdoesn’tcomewillgoLookandsayIfyougetuplate,youwillbelateforschool.getuplatelateforschoolhard-workingIfsheishard-working,shewillgetgoodgrades.getgoodgradesIfthetelephonerings,Iwillanswerit.ringanswergofishing.IfitissunnythisSunday,we’llgofishing.sunnythisSundayIfIhavealotofmoney,Iwillbuyabighouse.LookandsayalotofmoneyabighouseIf的两个意思:•If:“如果”“是否”引导条件状语从句引导宾语从句Idon’tknowifhewillcometomorrow.Iwillgotothecinemaifitdoesn’train.主现从现/主将从现if可用将来时2、unless=if...not.除非,若不,Let'sgooutforawalkunlessyouaretootired.=Ifyouarenottootired,let'sgooutforawalk.Unlessitrains,thegamewillbeplayed条件状语从句3、so/aslongas只要Youmayborrowmybookaslongasyoukeepitclean.Solongasyou'rehappy,itdoesn'tmatterwhatyoudo.条件状语从句1.Ifit____tomorrow,we____toclimbmountains.A.doesn’train;goB.won’train;willgoC.won’train;goD.doesn’train;willgo条件状语从句2Hewillhelpmewithmymathsifhe____free.AwasBwillbeCwouldbeDis3.Ifit______sunnytomorrow,I____boating.A.isgoB.willbe,goC.is,willgoD.willbe,willgo4.Ifhe______,I______himthetime.A.comes,tellB.willcome,willtellC.comes,willtellD.willcome,tell5.Idon’tknowifmyuncle_____.Ifhe___,Iwillbeveryhappy.Acomes;willcomeBwillcome;willcomeCcomes;comesDwillcome;comes11.He_______(help)mewithmymathsifhe____(be)free.12.Idon’tknowifJim________tomorrow.Ifhe_______,Iwillbeveryglad.(come)13._____(tell)hermytelephonenumberifshe______(want)toknow.14.Ifit____(be)sunnytomorrow,I______(go)boating..willhelpiswillcomecomesTellwantsiswillgo3．We’llgototheparkifit_____raintomorrow.A.don’tB.doesn’tC.won’t4．Wearenotsureifit____tomorrow.Ifit____,oursportsmeetingwillbeputoff.A.rains;rainsB.rains;willrainC.willrain;willrainD.willrain;rains条件状语从句5.I’llgivethebooktohimaslongashe___herenextSunday.A.willcomeB.comesC.iscomingD.came6.Youwillnotgetgoodgrades______youworkhard.A.andB.unlessC.ifD.aslongas条件状语从句•40.–WillyoupleasegivethedictionarytoJane?–Sure,I’llgiveittoher_______shearriveshere.A.beforeB.untilC.becauseD.assoonas37.Asnakebithim______hewenttoseeadoctoratonce.A.ifB.whereC.becauseD.so•28.Youwillbelateforschool________youdon’tgetupearly.A.butB.ifC.andD.or•34.Itwasrainingheavily,_____wedecidedtostayathomeandwatchTV.A.butB.orC.becauseD.so•36.______thedinnerwasallover,everyonehelpedwashthedishes.A.HowB.WhenC.BeforeD.Why