人教版新目标八年级上册 Unit10 if条件句用法专项讲解课件

Unit10Ifyougototheparty,you’llhaveagreattime!if条件句Unit10if条件句1Ihavetostayathome.Iwillbebored.IfIstayathome,Iwillbebored.Ihavetostayathome.Iwill2Iwantto

goout.Youwillbewet.IfIgoout,Iwillbewet.Iwanttogoout.Youwillbe3Itwillbesunnytomorrow.Wewillgoforaride.Ifitissunnytomorrow,wewillgoforaride.Itwillbesunnytomorrow.Wew4Itwillbesunnytomorrow.Iwillgoswimmingwithmybrother.Ifitissunnytomorrow,Iwillgoswimmingwithmybrother.Itwillbesunnytomorrow.Iwi5Itwillbesunnytomorrow.Wewilleaticecream.Ifitissunnytomorrow,wewilleaticecream.Itwillbesunnytomorrow.We6Itwillbesunnytomorrow.Wewillgocamping.Ifitissunny

tomorrow,wewillgocamping.Itwillbesunnytomorrow.Wew7

It

willbesunnytomorrow.Wewillgototheamusementpark.Ifitissunnytomorrow,wewillgototheamusementpark.Itwillbesunnytomorrow.We8人教版新目标八年级上册Unit10if条件句用法专项讲解课件9Grammar

Focus:if条件句

Ihavetostayathome.Iwillbebored.IfIstayathome,Iwillbebored.Iwantto

goout.Youwillbewet.IfIgoout,Iwillbewet.Itwillbesunnytomorrow.Wewillgoforaride.Ifitissunnytomorrow,wewillgoforaride.Itwillbesunnytomorrow.Iwillgoswimmingwithmybrother.Ifitissunnytomorrow,Iwillgoswimmingwithmybrother.Itwillbesunnytomorrow.Wewilleaticecream.Itwillbesunnytomorrow.Wewillgocamping.Ifitissunny

tomorrow,wewillgocamping.Ifitissunnytomorrow,wewilleaticecream.合并GrammarFocus:if条件句

Ihave10IfIhavemoney,Iwillbuysomefood.IfIhavesomefood,Iwilleatthemquickly.IfIeatthemquickly,Iwillbefull.IfIamfull,Iwillgetfat.IfIamfat,Iwillloseweight.IfIloseweight,Iwillexerciseeveryday.IfIexerciseeveryday,Iwillspendalotoftime.IfIspendalotoftime,Iwillnothavetimetomakemoney.IfIdon'thavetimetomakemoney,Iwillbepoor.IfIhavemoney,Iwillbuysom11Lookatthepicturesandmakesentenceswith“if”.IfyougotothepartywithKarenandAnna,you’llhaveagoodtime.Ifyouwearjeanstotheparty,theteacherswon’tletyouin.Lookatthepicturesandmake12Ifyoutakethebustotheparty,you’llbelate.Ifyoustayathome,youwillbesorry.Ifyoutakethebustothepar13Ifyouhavearobot,whatwillyoudo?IfI

have

arobot,I

will

letit…helpwiththehousework.babysitmylittlebrother.wakemeupinthemorning.teachmeEnglishafterschool.Ifyouhavearobot,whatwill141.—IthinkI’lltakethebustotheparty.—Ifyou_____(do),you_________(be)late.2.—IthinkI’llstayathome.—Ifyou____(do),you_________(be)sorry.3.—Whatwillhappeniftheyhavethepartytoday?—Ifthey_____(have)ittoday,halftheclass____________(notcome).4.—Shouldweaskpeopletobringfood?—Ifwe_____(ask)peopletobringfood,they______just_____(bring)potatochipsandchocolate.dowillbedowillbehavewon’tcomeaskwillbringCompletethesentences.1.—IthinkI’lltakethebus15都表示对事情的结果进行预测。Canyoutelltheconjunction(连词)thatconnectsthetwopartsofthesentences?Whatdoesitmean?Watchandlearn都表示对事情的结果进行预测。Canyoutellthe16Whattensesdothesentencesuse?一般现在时一般将来时Whattensesdothesentencesu17What’sthemeaningofthe“do”here?Ifyoutakethebustotheparty,you’llbelate.Ifyoustayathome,you’llbesorry.What’sthemeaningofthe“do”18e.g.Wewillgototheparkifit_____________(rain)tomorrow.含if条件状语从句的主从复合句1.Ifyougotherebybike,youwillbelate./Youwillbelateifyougotherebybike.if条件状语从句中，主句用一般将来时，从句用一般现在时表示将来。主将从现原则。doesn’traine.g.Wewillgototheparkif192.Ifyouareill,youmustgotothedoctor.if条件状语从句中，如果主句有must，can，may

等情态动词，从句用一般现在时。e.g.Youmuststopifthetrafficlight____(be)red.is2.Ifyouareill,youmustgo20e.g.Don’t

waitformeifI_____(be)late.3.Pleasecallmeifyoucomeback.if条件状语从句中，主句是祈使句，从句用一般现在时表示将来。主祈从现原则。ame.g.Don’twaitformeifI_212.Ifit____(be)coldtomorrow,Iwillwearmysweater.3.Hecangohomeifhe_______(finish)hishomework.finishes1.Putupyourhandsifyou_____(have)

anyquestions.haveis趁热打铁2.Ifit____(be)coldtomorr222)Ifit____(be)coldtomorrow,Iwillwearmysweater.3)Hecangohomeifhe________(finish)hishomework.finishes1)Putupyourhandsifyou_____(have)anyquestions.haveis【语境应用】完成句子。4)如果他来了，我们会让你知道的。Ifhe________,we________youknow.5)如果天不下雨，她会开车来我家的。Ifit___________,she_________eswillletdoesn'trainwilldrive2)Ifit____(be)coldtomorr23Finishthefollowingsentencesaccordingtotheexample.Finishthefollowingsentences24

if

willshe,callme,

I,tellheraboutitIfshecallsme,Iwilltellheraboutit.if25

he,come,nextweekend,

I,tellyou

Ifhecomesnextweekend,Iwilltellyou.he,come,nextweekend,I26

notrain,

gohiking,thisafternoon

Ifitdoesn’train,Iwillgohikingthisafternoon.notrain,gohiking,thisa27

nowar,

theworld,morebeautifulIfthereisnowar,theworldwillbemorebeautiful.nowar,theworld,moreb28

he,havefreetime,

gotoShanghai

Ifhehasfreetime,hewillgotoShanghai.

he,havefreetime,gotoSh29

if

情态动词（may/can、should）drivetoofast,

somethingbad,happenIfyoudrivetoofast,somethingbadmayhappen.if30

he,workhard,

passtheexamIfheworkshard,hecanpasstheexam.

he,workhard,passtheexam31afire,

youcall119,atonceIfthereisafire,youshouldcall119atonce.afire,youcall119,atonce32

ifmeether,

TellMary,togivemeacallIfyoumeether,tellMarytogivemeacall.ifIfyoumeether,te33cometoChengdu,

letmeknowIfyoucometoChengdu,etoChengdu,letmeknowI34Beinvited,

gototheparty,withasmallgiftIfyouareinvited,gotothepartywithasmallgift.Beinvited,gototheparty,352.如果if引导的条件状语从句中所表示的前提或条件将来可以实现或正在进行，动词要用现在完成时或进行时，主句通常用将来时。eg：Wewillgiveyouagoodpriceifyou___________(think)ofbuyingit.arethinking3.“祈使句+and/or引导的结果状语”中，祈使句在意义上相当于一个

条件状语从句中。eg：Useyourhead,andyouwillfindaway.=Ifyoudon’tuseyourhead,youwillfindaway.2.如果if引导的条件状语从句中所表示的前提或条件将来可364.如果if引导的条件状语从句有否定词not，则可与unless互换。eg:Youwon’tcatchthebusifyou_________(notrun).=Youwon’tcatchthebusunlessyourun.don’trun5.If引导的条件状语从句在意义上相当于介词with/without与名词连用。eg：Ifthereisnowater,fishwilldie.=Withoutwater,fishwilldie.=Withnowater,fishwilldie.4.如果if引导的条件状语从句有否定词not，则可与un37

二、含if宾语从句的主从复合句:if引导的宾语从句是一般疑问句时，构成宾语从句也可用whether连接，表达意思为“是否”。若句尾有ornot，只能whether,不能用if。句尾标点符号取决于主句,时态根据需要决定。Heaskedmeif/whetherIamfromJapan.eg：AreyoufromJapan?Heaskedme.(变为含宾语从句的主从复合句)Lilywillcomehereornot.Couldyoutellme?(变为宾语从句的主从复合句)CouldyoutellmewhetherLilywillcomehereornot?

二、含if宾语从句的主从复合句:if引导的宾语从句是一般38

DoyoulikewatchingTVornot?Heaskedme.HeaskedmewhetherIlikewatchingTV?DoyoulikewatchingTVorno39

AreyougoingtoBeijingtomorrow?Hewondered.Hewonderedif/whetherIam

goingtoBeijingtomorrow.AreyougoingtoBeijingtomo40单项选择。1)_______wedealwithourproblems,wecaneasilybecomeunhappy.

A.Until

B.IfC.Unless

D.ThoughC解析：Unlesswedealwithourproblems,wecaneasilybecomeunhappy.

=____we______dealwithourproblems,wecaneasilybecomeunhappy.Ifdon’t单项选择。C解析：Unlesswedealwitho41

2)—Mrs.Li,willyoubeangry_______yourstudentsdon’tobeytherulesinclass?—Alittle.ButIwillstoptheminafriendlyway.A.if

B.unless

C.though

3)_______youdrive,youmustn’tdrinkwineatall.A.If

B.Unless

C.ThoughAA

2)—Mrs.Li,willyoubeangr424)Youwillseemanyauntsdancingtogetheronthesquareifit_______intheevening.A.doesn’train

B.rainsC.willrain

D.won’trainA4)Youwillseemanyauntsdan43Unit10Ifyougototheparty,you’llhaveagreattime!if条件句Unit10if条件句44Ihavetostayathome.Iwillbebored.IfIstayathome,Iwillbebored.Ihavetostayathome.Iwill45Iwantto

goout.Youwillbewet.IfIgoout,Iwillbewet.Iwanttogoout.Youwillbe46Itwillbesunnytomorrow.Wewillgoforaride.Ifitissunnytomorrow,wewillgoforaride.Itwillbesunnytomorrow.Wew47Itwillbesunnytomorrow.Iwillgoswimmingwithmybrother.Ifitissunnytomorrow,Iwillgoswimmingwithmybrother.Itwillbesunnytomorrow.Iwi48Itwillbesunnytomorrow.Wewilleaticecream.Ifitissunnytomorrow,wewilleaticecream.Itwillbesunnytomorrow.We49Itwillbesunnytomorrow.Wewillgocamping.Ifitissunny

tomorrow,wewillgocamping.Itwillbesunnytomorrow.Wew50

It

willbesunnytomorrow.Wewillgototheamusementpark.Ifitissunnytomorrow,wewillgototheamusementpark.Itwillbesunnytomorrow.We51人教版新目标八年级上册Unit10if条件句用法专项讲解课件52Grammar

Focus:if条件句

Ihavetostayathome.Iwillbebored.IfIstayathome,Iwillbebored.Iwantto

goout.Youwillbewet.IfIgoout,Iwillbewet.Itwillbesunnytomorrow.Wewillgoforaride.Ifitissunnytomorrow,wewillgoforaride.Itwillbesunnytomorrow.Iwillgoswimmingwithmybrother.Ifitissunnytomorrow,Iwillgoswimmingwithmybrother.Itwillbesunnytomorrow.Wewilleaticecream.Itwillbesunnytomorrow.Wewillgocamping.Ifitissunny

tomorrow,wewillgocamping.Ifitissunnytomorrow,wewilleaticecream.合并GrammarFocus:if条件句

Ihave53IfIhavemoney,Iwillbuysomefood.IfIhavesomefood,Iwilleatthemquickly.IfIeatthemquickly,Iwillbefull.IfIamfull,Iwillgetfat.IfIamfat,Iwillloseweight.IfIloseweight,Iwillexerciseeveryday.IfIexerciseeveryday,Iwillspendalotoftime.IfIspendalotoftime,Iwillnothavetimetomakemoney.IfIdon'thavetimetomakemoney,Iwillbepoor.IfIhavemoney,Iwillbuysom54Lookatthepicturesandmakesentenceswith“if”.IfyougotothepartywithKarenandAnna,you’llhaveagoodtime.Ifyouwearjeanstotheparty,theteacherswon’tletyouin.Lookatthepicturesandmake55Ifyoutakethebustotheparty,you’llbelate.Ifyoustayathome,youwillbesorry.Ifyoutakethebustothepar56Ifyouhavearobot,whatwillyoudo?IfI

have

arobot,I

will

letit…helpwiththehousework.babysitmylittlebrother.wakemeupinthemorning.teachmeEnglishafterschool.Ifyouhavearobot,whatwill571.—IthinkI’lltakethebustotheparty.—Ifyou_____(do),you_________(be)late.2.—IthinkI’llstayathome.—Ifyou____(do),you_________(be)sorry.3.—Whatwillhappeniftheyhavethepartytoday?—Ifthey_____(have)ittoday,halftheclass____________(notcome).4.—Shouldweaskpeopletobringfood?—Ifwe_____(ask)peopletobringfood,they______just_____(bring)potatochipsandchocolate.dowillbedowillbehavewon’tcomeaskwillbringCompletethesentences.1.—IthinkI’lltakethebus58都表示对事情的结果进行预测。Canyoutelltheconjunction(连词)thatconnectsthetwopartsofthesentences?Whatdoesitmean?Watchandlearn都表示对事情的结果进行预测。Canyoutellthe59Whattensesdothesentencesuse?一般现在时一般将来时Whattensesdothesentencesu60What’sthemeaningofthe“do”here?Ifyoutakethebustotheparty,you’llbelate.Ifyoustayathome,you’llbesorry.What’sthemeaningofthe“do”61e.g.Wewillgototheparkifit_____________(rain)tomorrow.含if条件状语从句的主从复合句1.Ifyougotherebybike,youwillbelate./Youwillbelateifyougotherebybike.if条件状语从句中，主句用一般将来时，从句用一般现在时表示将来。主将从现原则。doesn’traine.g.Wewillgototheparkif622.Ifyouareill,youmustgotothedoctor.if条件状语从句中，如果主句有must，can，may

等情态动词，从句用一般现在时。e.g.Youmuststopifthetrafficlight____(be)red.is2.Ifyouareill,youmustgo63e.g.Don’t

waitformeifI_____(be)late.3.Pleasecallmeifyoucomeback.if条件状语从句中，主句是祈使句，从句用一般现在时表示将来。主祈从现原则。ame.g.Don’twaitformeifI_642.Ifit____(be)coldtomorrow,Iwillwearmysweater.3.Hecangohomeifhe_______(finish)hishomework.finishes1.Putupyourhandsifyou_____(have)

anyquestions.haveis趁热打铁2.Ifit____(be)coldtomorr652)Ifit____(be)coldtomorrow,Iwillwearmysweater.3)Hecangohomeifhe________(finish)hishomework.finishes1)Putupyourhandsifyou_____(have)anyquestions.haveis【语境应用】完成句子。4)如果他来了，我们会让你知道的。Ifhe________,we________youknow.5)如果天不下雨，她会开车来我家的。Ifit___________,she_________eswillletdoesn'trainwilldrive2)Ifit____(be)coldtomorr66Finishthefollowingsentencesaccordingtotheexample.Finishthefollowingsentences67

if

willshe,callme,

I,tellheraboutitIfshecallsme,Iwilltellheraboutit.if68

he,come,nextweekend,

I,tellyou

Ifhecomesnextweekend,Iwilltellyou.he,come,nextweekend,I69

notrain,

gohiking,thisafternoon

Ifitdoesn’train,Iwillgohikingthisafternoon.notrain,gohiking,thisa70

nowar,

theworld,morebeautifulIfthereisnowar,theworldwillbemorebeautiful.nowar,theworld,moreb71

he,havefreetime,

gotoShanghai

Ifhehasfreetime,hewillgotoShanghai.

he,havefreetime,gotoSh72

if

情态动词（may/can、should）drivetoofast,

somethingbad,happenIfyoudrivetoofast,somethingbadmayhappen.if73

he,workhard,

passtheexamIfheworkshard,hecanpasstheexam.

he,workhard,passtheexam74afire,

youcall119,atonceIfthereisafire,youshouldcall119atonce.afire,youcall119,atonce75

ifmeether,

TellMary,togivemeacallIfyoumeether,tellMarytogivemeacall.ifIfyoumeether,te76cometoChengdu,

letmeknowIfyoucometoChengdu,etoChengdu,letmeknowI77Beinvited,

gototheparty,withasmallgiftIfyouareinvited,gotothepartywithasmallgift.Beinvited,gototheparty,782.如果if引导的条件状语从句中所表示的前提或条件将来可以实现或正在进行，动词要用现在完成时或进行时，主句通常用将来时。eg：Wewillgiveyouagoodpriceifyou___________(think)ofbuyingit.arethinking3.“祈使句+and/or引导的结果状语”中，祈使句在意义上相当于一个

条件状语从句中。eg：Useyourhead,andyouwillfindaway.=Ifyoudon’tuseyourhead,youwillfindaway.2.如果if引导的条件状语从句中所表示的前提或条件将来可794.如果if引导的条件状语从句有否定词not，则可与unless互换。eg:Youwon’tcatchthebusifyou_________(notrun).=Youwon’tcatchth