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IfyouarehappyIfyou'rehappyandyouknowit,clapyourhands.Ifyou'rehappyandyouknowit,stompyourfeet.Ifyou'rehappyandyouknowit,shouthurray.学习目标1.学习if引导的条件状语从句2.能够熟练运用所学的知识,用if表达条件,用will表达结果3.学习因果关系的表达和做出合理的建议一.用法：二.构成：if条件状语从句表示在某条件下，某事很可能发生，条件是可能存在的，主句中某种情况发生的概率也是很高的。主句+if从句Hewillhelpyouifyouaskhim.If从句,+主句Ifyouaskhim,hewillhelpyou.三.if条件从句的时态搭配：1.最常用的搭配是“主将从现”，即主句用一般将来时，从句用一般现在时。2.主句中含情态动词，从句用一般现在时。3.主句为祈使句，从句用一般现在时。Hewillgettoschoolintimeifheruns.Wecanwalkthereifitiswarm.Ifyouhavequestions,pleaseaskme.()1.Ifitrainstomorrow,we___visitthemuseum.A.don’tdoB.won’tgoC.aren’tgoD.didn’tgo.()2.Willyougototheparkifit____fine?A.willbeB.wasC.isD/()3.Ifyou__toschoollate,yourteacher_____angrywithyou.A.come;areB.come,willbeC.willcome;areD.willcome;willbe()4.Ifyou_____hard,youwill___successful.A.work,areB.works,isC.towork,beD.work,be()5.Ifit____tomorrow,Iwill____shopping.A.snow,goB.snows,goesC.doesn’tsnow,goD.doesn’tsnow,goesBCBDC用所给词的适当形式填空.1.I’msureifhe_______(go)totheparty,he___________(have)agreattime.2.I___________(buy)acomputerifI________(have)enoughmoney.3.You__________(be)unhealthyifyou___________(notdo)enoughexercise.4.Pleaseletus________(know)ifhe_________(arrive)tomorrow.goeswillhavehavewillbedon’tdoarriveswillbuyknow5.He___________(get)bettergradesifhe_________(study)hard.6.Ifyou__________(study)hard,youcan________(pass)theexam.7.Don’t_______(cross)theroadifthelight_______(be)red.8.Ifyou_________(work)reallyhard,you___________(be)famousandrich.workstudiescrossiswillbewillgetstudypassStatements1.___IthinkI’llwearjeanstotheparty.2.___IthinkI’llstayathome.3.___IthinkI’lltakethebustotheparty.4.___IthinkI’llgotothepartywithKarenandAnna.Matchthestatementswiththepictures[a-d].cdba1aStatementsResponses1.IthinkI’llwearjeanstotheparty.Ifyoudo,theteacherswon’t__________.2.IthinkI’llstayathome.Ifyoudo,you’ll______________.3.IthinkI’lltakethebustotheparty.Ifyoudo,you’ll______________.4.IthinkI’llgotothepartywithKarenandAnna.Ifyoudo,you’ll________________.Listenandcompletetheresponsesin1a.1bletyouinbesorrybelatehaveagreattimeA:Areyougoingtothepartytomorrownight?B:Yes,Iam.A:Whowillyougowith?B:IthinkI’llgowithKarenandAnna.A:Ifyoudo,you’llhaveagreattime.Lookatthepicturesin1aandmakeconversations.1cListenandcirclethecorrectanswertocompletethesentences.1.Thestudentsaretalkingaboutwhentohave(aclasspartyaclassmeetingabirthdayparty).2.Theyplantohaveiton(FridayeveningSaturdayafternoonSaturdayevening).2aListenagain.Choosethecorrectshortanswerintheboxtoanswereachquestion.halftheclasswon’tcomesomestudentswillbeboredmakesomefoodstudentswillleaveearlythepartygames2b1.Whatwillhappeniftheyhavethepartytoday?____________________________________________2.Whatwillhappeniftheyhavethepartytomorrow?____________________________________________3.Whatwillhappeniftheywatchavideoattheparty?____________________________________________4.WhatwillMarkorganize?____________________________________________5.WhatwillNellydo?_____________________________________________Somestudentswillbebored.Thepartygames.Makesomefood.Studentswillleaveearly.Halftheclasswon’tcome.A:OK,whenisagoodtimetohavetheparty?B:Let’shaveittoday.A:Hmm.Ifwehaveittoday,halftheclasswon’tcome.2cRole-playaconversationbetweenNellyandMark.J:Hey,Ben.Forthepartynextweek,shouldweaskpeopletobringfood?B:No,let’sorderfoodfromarestaurant.Ifweaskpeopletobringfood,they’lljustbringpotatochipsandchocolatebecausethey’llbetoolazytocook.J:OK.Forthegames,doyouthinkweshouldgivepeoplesomesmallgiftsiftheywin?B:Ithinkthat’sagreatidea!Ifwedothat,morepeoplewillwanttoplaythegames.J:Yes,thegameswillbemoreexciting,too.Role-playtheconversation.2d1.ordersthfromsp从某地订购某物2.ordersbtodosth命令某人做某事IthinkI’lltakethebustotheparty.Ifyoudo,you’llbelate.IthinkI’llstayathome.Ifyoudo,you’llbesorry.Whatwillhappeniftheyhavethepartytoday?Iftheyhaveittoday,halftheclasswon’tcome.Shouldweaskpeopletobringfood?Ifweaskpeopletobringfood,they’lljustbringpotatochipsandchocolate.GrammarFocusDearSuMei,Idon’t_______(know)whatto_______(do)aboutgoingtoMike’sbirthdaypartytomorrownight.Myparents______(think)IshouldstudyformyEnglishexamnextweek.IfI_______(go)totheparty,they________(be)upset.Mike______(tell)uswearniceclothes,butIdon’t______(have)any.IfI_____(wear)jeans,I__________(look)theworst.Also,I’mnotsurehowto______(go)totheparty.IfI_______(walk),it_________(take)metoolong.IfI______(take)ataxi,it________(be)tooexpensive.Canyougivemesomeadviceplease?TinaFillintheblankswiththecorrectforms.knowdothinkgowillbetellshavewearwilllookgowalkwilltaketakewillbe3a1.advice不可数名词，建议apieceofadvicesomepiecesofadvice2.advise动词，提建议Completethesentencesusingyourownideas.1.IfIgetuplatetomorrow,_________________________________2.IfIdon’tfinishmyhomework,_________________________________3.IfIdon’tgetenoughexercise,_________________________________4.Iwillnothaveenoughtimetostudyif_________________________________5.Iwillnotmakeanyfriendsif_________________________________Iwillmisstheschoolbus.myteacherwillbeangry.Iwon’tbestrong.Iplaycomputergameseveryday.Ialwaysmakethemupset.3b3cIth