中考英语二轮复习课件条件状语从句

ConditionalAdverbialClause(条件状语从句）

Ifyou'rehappyandyouknowit,clapyourhandsIfyou'rehappyandyouknowit,youreallywanttoshowit.一、条件状语从句的定义if“如果，假如”，它引导的句子表示某事发生所需要的条件，即“在……条件下，某事才能发生,”在句子中充当状语，因此称之为条件状语从句。主句总结：有if引导的句子，叫_____，另一句子则为_____从句从句主句Ifyou‘rehappyandyouknowit,clapyourhands.IfIhaveenoughmoney,Iwillbuyanipad.

活学活用：利用所给词造句IfIamill,Iwillseeadoctor.IfIhaveenoughmoney,Iwilltravelaroundtheworld.ill，seeadoctorhaveenoughmoney,travelaroundtheworldIwillseeadoctorifIamill.IwilltravelaroundtheworldifIhaveenoughmoney.总结：从句在前，主句在后，_____逗号隔开；主句在前，从句在后，_____逗号隔开。有没有IfIhaveenoughmoney,IwilltravelaroundtheworldIfIamill,Iwillseeadoctor.二、学习条件状语从句要注意的问题

IfIamhungry,Iwilleatsomefood.Ifitrainstomorrow,IwillwatchTVathome.总结①：在if引导的条件状语从句中，主句用将来时，从句用现在时，简称_________“主将从现”hungry,eatsomefoodrain,watchTV活学活用：rainsamwillwatchwilleatPleasecallmeif

she_______(pass)theexam.Pleasedresshimifhe______(feel)cold.总结②：在if引导的条件状语从句中，主句用祈使句，从句用现在时，简称__________passesfeels“主祈从现”Wemaybecomelazyifwe____(have)robotsdoeverythingforus.Youmuststopifthetrafficlight____(be)red.总结③：在if引导的条件状语从句中，主语含有can,must,may,should等情态动词时，从句用现在时，简称________“主情从现”ishave趁热打铁：Ifhe______(arrive)tomorrow,Iwillbewaitingforhimattheairport.Hecangohomeifhe_____(finish)hishomework.3.Ifitiscoldtomorrow,he_______(wear)hiscoat.4.He____________(notleave)unlessitwasfinenextday.arriveswouldnotleavefinisheswillwear三、条件状语从句的其他引导词unless，in case,as/so long as1、unless引导的条件句，表示强烈的否定。翻译为“除非…”。“非……不可。”你不努力就会失败的。我不叫你就别来。You will fail unless you work harder .Don’t come unless I call you .2、incase万一Takeahatwithyouincasethesunisveryhot.倘若太阳很利害，你就把帽子戴上。把电话号码写下来以免忘了。Writethetelephonenumberdownincaseyouforget.Aslongasthereislifethereishope.Hewilldoanythingaslongasitisinteresting.3.aslongas只要…就…，表示一种前提条件他可以做任何事情只要它有趣。留得生命在,不怕没希望.能力提升：Don’tpromiseanything______youareonehundredpercentsure2.__hethoughthecouldescapeattentionbysittingattheback,hewaswrong.3.______youloseheart,youwillfailintheexam.4.Ifhe___________(notcome)ontime,wewillgowithouthim.5.Ifyouhelpme,I________(finish)mytaskontime.unlessIf

Oncedoesn’tcomewillfin