人教版八（下）UNIT5PERIODONE

Unit5Ifyougototheparty,youllhaveagreattime!,Discuss:Ifyouarehappy,whatwillyoudo?,*Ifyouarehappy,whatwillyoudo?IfIamhappy,Iwillsmile.IfIamhappy,Iwillsing.IfIamhappy,Iwilldance.,IfIamhappy,Iwill.,*Ifyouaresad,whatwillyoudo?,IfIamsad,Iwillcry.,IfIamsad,Iwilleatalotoffood.,IfIamsad,Iwillgoshopping.,IfIamsad,Iwill.,*Ifyouarehappy,whatwillyoudo?,IfIamhappy,Iwillsmile.,*Ifyoubecomesad,whatwillyoudo?,IfIbecomesad,Iwillcry.,*Whatwillhappenifyoudotoomuchwork?,IfIdotoomuchwork,Iwillgettired.,Playaguessinggame,WhatwillhappenifItouch(触摸)it?,Ifyoutouch(触，碰)it,itwill_,getangry,Willit?,cry,behappy,beexcited,思考,if引导的条件状语从句,用法须知：一、含义：条件状语从句是在句子中作条件状语的句子。表示“假如”有从句的动作发生，就会有主句的动作发生。条件状语从句常由从属连词if引导。,if条件状语从句的位置,if引导的条件状语从句可以位于主句之前，也可以位于主句之后。从句在前时，主从句之间必须用逗号隔开。如：Ifitdoesntraintomorrow,wewillgotothepark.=Wellgototheparkifitdoesntraintomorrow.,1bListening,1.IthinkImgoingtogotothepartywithKarenandAnn.d.Ifyoudo,youllhaveagreattime.2.IthinkImgoingtowearjeanstotheparty.a.Ifyoudo,theteacherswontletyouin.,3.IthinkImgoingtotakethebustotheparty.b.Ifyoudo,youllbelate.4.IthinkImgoingtostayathome.c.Ifyoudo,youllbesorry.,使用if条件状语从句的注意事项：（1）在if条件状语从句中，当主句是一般将来时时，不能够使用begoingto结构，而要用will来代替。如：IthinkImgoingtogotothepartywithKarenandAnn.Ifyoudo,youllhaveagreattime.,在if条件状语从句中，如果主语是you时,可以将整句转换成：祈使句,and/orwill/wont如：Ifyoudo,youllhaveagreattime.（do=gotothepartywithKarenandAnn）可以将整句转换成：GotothepartywithKarenandAnn,andyoullhaveagreattime.,IthinkImgoingtowearjeanstotheparty.Ifyoudo,theteacherswontletyouin.(do=wearjeanstotheparty)可以将整句转换成：Dontwearjeanstotheparty,ortheteacherswontletyouin.,cry,behappy,Donttouchit,or.,Touchit,and.,Andreasbirthdayiscoming.Shewantstoknowwhenisagoodtimetohavetheparty.Listento2aandfinditout.,a.studyfortheirtestsb.helpmeorganizeitc.tooearlyd.makesomefoode.Saturdayafternoonf.playpartygames,2aListening,3,1,2,6,4,5,_Sheisgoingtomakesomefood._Heisgoingtoorganizethepartygames._Halftheclasswontcome._Somestudentswillbebored._Studentswillleaveearlytostudyfortheirtest.,54132,2bListening,2bListening,Whatwillhappeniftheyhavethepartytoday?Whatwillhappeniftheyhavethepartytomorrow?,Halftheclasswontcome.,Studentswillleaveearlytostudyfortheirtests.,Whatwillhappeniftheywatchavideoattheparty?WhatisMarkgoingtoorganize?WhatisAndreagoingtodo?,Somestudentswillbebored.,Heisgoingtoorganizethepartygames.,Sheisgoingtomakesomefood.,Summary1,（1）if条件状语从句用一般现在时，主句用一般将来时。（主“将”从“现”）（2）在if条件状语从句中，如果主语是you时,可以将整句转换成：祈使句,and/orwill/wont,比较,-Iwonderifitisgoingtorainnextweek.-Ifitrains,Ihavetostayathome.两句中的意思是否相同?用法是否相同?第一句中if引导的从句是_从句,第二句中if引导的从句是_从句.,宾语,条件,条件状语,比较,1.Ifyouhaveanyquestionstoask,pleasecometomyoffice.2.Iwanttoknowifyouwillaskmeanyquestions.,summary2,If可以引导宾语从句,意为“是否”。此时从句中的一般将来时保持不变;if也可以引导条件状语从句,遵循主“将”从“现”的规定。,1.Ifthephone_,canyouanswerit?A.ringsB.isringC.willringD.rang,2.Lindasmother_ifshe_esback,finishescomesback,willfinishC.willcomeback,finishesD.willcomeback,willfinish,Multiplechoice,3.IthinkImgoingtowalkthere._A.Ifyoudo,youllbelate.B.Notreally.C.Whyso?D.Thankyou.,4.Willyougototheparkifit_fine?A.willbeB.wasC.isD./,5.Iwonderifitisgoingtorainnextweek.Ifit_,Ihavetostayathome.A.isB.doesC.doD.will,6.Ithinkthathalftheclass_withyou.ToagreeB.agreeingC.willagreeD.agrees,7.Dontplaywithfire(火),_youmayburn(烧伤)yourself.A.orB.