Unit10Ifyougototheparty,you’llhaveagreattime.初中英語人教版八上SectionA(GrammarFocus-3c)IthinkI’lltakethebustotheparty.Ifyoudo,you’llbelate.IthinkI’llstayathome.Ifyoudo,you’llbesorry.WhatwillhappeniftheyhavethepartytodayIftheyhaveittoday,halftheclasswon’tcome.ShouldweaskpeopletobringfoodIfweaskpeopletobringfood,they’lljustbringpotatochipsandchocolate.ReviewReadthesentences.Let’splayagameIfyou'rehappyandyouknowit_______________.clapyourhandssqueezetheeyesstretchyourbodystampyourfeetMakesentencesbyusingthestructure“if”conditionalsentences.doesn'traintomorrow,playfootballIfitdoesn'traintomorrow,I'llplayfootball.I'llplayfootballifitdoesn'traintomorrow.befreetomorrow,playbasketballIfIamfreetomorrow,I'llplaybasketball.I'llplaybasketballifIamfreetomorrow.finishone'shomework,goswimming

IfIfinishmyhomework,I'llgoswimming.I'llgoswimmingifIfinishmyhomework.Ifitissunnythisweekend…Ifitissunnythisweekend,Iwillgocamping.Iwillgotothepark.Iwillplayfootball.Ifitrainsthisweekend…Ifitrainsthisweekend,Iwillstayathome.Iwilldomyhomework.Iwilllistentosomemusic.she,callme,I,tellheraboutitIfshecallsme,Iwilltellheraboutit.

he,come,nextweekend,I,tellyouIfhecomesnextweekend,Iwilltellyou.if

will

notrain,

gohiking,thisafternoonIfitdoesn’train,Iwillgohikingthisafternoon.

nowar,

theworld,morebeautifulIfthereisnowar,theworldwillbemorebeautiful.

he,havefreetime,

gotoShanghaiIfhehasfreetime,hewillgotoShanghai.SentencesReviewMakesentenceswiththewordsinthebox.Grammarfocus

IthinkI’lltakethebustotheparty.Ifyoudo,you’llbelate.IthinkI’llstayathome.Ifyoudo,you’llbesorry.Whatwillhappeniftheyhavethepartytoday?Iftheyhaveittoday,halftheclasswon’tcome.Shouldweaskpeopletobringfood?Ifweaskpeopletobringfood,they’lljustbringpotatochipsandchocolate.句子類型簡單句復合句一個主語（或者并列主語）+一個謂語（或者并列謂語）構成的句子一個主句+一個從句（或者多個從句語）構成的句子I‘mhappy.Ithinkthatyoucanpasstheexam.Iwillhaveagoodtimetomorrow.Iwillgotothepartytomorrow.（將以上兩個句子合并為一個句子）IfIgotothepartytomorrow,I’llhaveagoodtime.注意:if引導一個條件狀語從句，當主句是一般將來時時,if引導的從句必須用現在時來表示將來可能發生的動作或存在的狀態。語法聚焦If條件句Whatdoyoufindinthesesentence?A:Ifyoulose,youwillbeintrouble.B:WhatwillIhavetodoifIwanttowinyou.A:Ifyoucanjumpoffmyhand,youwillwin.B:IfIdoit,Iwillbetheruleroftheheaven.句子的時態是什么？將來時一般現在時YouwilltakeYudiawayifIgobacknow.Youwillshowmeifyowantmetobelieveyou.Iwillwritemynameonthiswallifyoudon’tbelieveme.Youwon’twinifyoudon’tletmyhand.Youwon’tbeangryifIdon’tyougo.IwillbeangryifIstayhere.Haveadiscussion句子的從句部分是什么？IthinkI’lltakethebustotheparty.Ifyoudo,you’llbelate.IthinkI’llstayathome.Ifyoudo,you’llbesorry.Whatwillhappeniftheyhavethepartytoday?Iftheyhaveittoday,halftheclasswon’tcome.Shouldweaskpeopletobringfood?Ifweaskpeopletobringfood,they’lljustbringpotatochipsandchocolate.GrammarFocusIf

是連詞，意思是如果；假若；倘若它所引導的句子稱之為從句，用一般現在時表示將來可能發生的動作或存在的狀態。另一個句子則為主句，用一般將來時時態。這里if所引導的是真實條件句,

即所假設的條件有可能成為現實,表達假定所假設的條件實現時會出現的情況或會采取的行為。if引導的條件狀語從句提醒

（1）if引導的條件狀語從句，通?？膳c以下句型相互轉換：

①祈使句+and/or+一般將來時的句子

e.g.Ifyouarequick,youwon’tbelateforclass.

=Bequick,andyouwon’tbelateforclass.

②含有介詞with或without的句子

e.g.Ifthereisnowater,wecan’tlive.=Wecan’tlivewithoutwater.（2）if除可引導條件狀語從句外，還可引導賓語從句，意為“是否”。

e.g.Idon’tknowifhewillcometoJim’sbirthdaypartytomorrow.if引導的條件狀語從句典例點撥可用語法判斷法解答本題。句意：——我想我會坐公交車去參加會議。——公交車？如果你這樣做的話，你就會遲到。if引導的條件狀語從句的時態遵循“主將從現”原則，此處空格后的主句用的一般將來時，if從句要用一般現在時。1．—IthinkI’lltakeabustothemeeting.—ThebusIfyou______,youwillbelate.A．doB．havedoneC．willdoD．didAIfIdon’tfinishmyhomeworkontime,myteacherwillbemadatme.Ifmyteacheraremadatme,hewillcallmyparents.Ifhecallsmyparents,myparentswillbemadatme.Ifmyparentsaremadatme,Iwon’tgetanypocketmoney.IfIcan’tgetanypocketmoney,Iwillbeverypoor.IfIamverypoor,Iwon’tbuythethingsIlike.Ifhedoesn’tworkhard,hewillgetabadgrade.Ifhegetsabadgrade,hisparentswillbemadathim.Ifhisparentsaremadathim,hewon’tgetanypocketmoney.Ifhecan’tgethispocketmoney,lifewillbedifficultandhecan’tbuythethingshelikes.PracticeWorkingroupsandmakesentenceswithif

onebyone.YouwilltakeYudiawayifIgobacknow.Youwillshowmeifyowantmetobelieveyou.Iwillwritemynameonthiswallifyoudon’tbelieveme.Youwon’twinifyoudon’tletmyhand.Youwon’tbeangryifIdon’tyougo.IwillbeangryifIstayhere.條件狀語從句的時態主句將來時從句一般現在時主句為以下三種情況.if從句要用一般現在時主句是一般將來時.主將從現Ifhecomes,hewilltellme.一般現在時一般將來時從句主句他如果要來,他會告訴我的。Ifyoustudyhard,youcangetgoodgrades.主句謂語含有情態動詞may/might/can等主情從現從句一般現在時情態動詞如果你努力學習,你就能夠取得好成績.主句if引導的條件狀語從句時態運用主句是祈使句.主祈從現Ifyouwanttopasstheexam,pleaseworkhard.一般現在時祈使句從句主句如果你想要通過考試，請你努力學習.助記：

if引導條件狀語從句if條件句,放句前，逗號要放主句前；if條件句,表可能.主講從現是關鍵.在英語里,當句子的主句為將來時態時,它所引導的時間狀語從句和條件狀語從句都使用一般現在時來表示將來時間,這在英語里被稱為“主將從現”。主句的將來時態并不僅限于我們這一課里所學習到的“will＋動詞原形”構成的一般將來時,還包括begoingto＋動詞原形、bedoing所表示的一般將來時以及我們以后會學到的其他的將來時態。例如:Whatishegoingtodowhenhegrowsup他長大了想干什么？WeareleavingforAmoytomorrowifitdoesn’train.如果明天不下雨,我們就去廈門。Wewillbuythatmicrowavenextweekifitspricekeepsgoingdown.如果價格持續下降,下個禮拜我們就買那臺微波爐。語法拓展DearSuMei,Idon’t______(know)whatto______(do)aboutgoingtoMike’sbirthdaypartytomorrownight.Myparents______(think)IshouldstudyformyEnglishexamnextweek.IfI______(go)totheparty,they________(be)upset.Mike______(tell)ustowearniceclothes,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.CanyougivemesomeadvicepleaseTinaknowdothinkgowillbetellshavewearwilllookgowalkwilltaketakewillbe3aFillintheblankswiththecorrectformsoftheverbsinbrackets.Languagepoints

Idon’tknowwhattodo...結構：_____________________________Exercises:1)Iwanttoknow_______________(何時離開).2)Canyoutellme_________________next(如何做)特殊疑問詞+動詞不定式（todo）whentoleavehowtodoLanguagepoints

beupset_________sth.(對某事失望)_________sb.(對某人失望)at/aboutwithExercises:1)Myparentswillbeupset______meifIdon’tgetgoodgrades.2.Marywasnotupset______thegiftyousent,butshewasupset_______you.withaboutwith1.IfIgetuplatetomorrow,________________________________

2.IfIdon’tfinishmyhomework,

________________________________

3.IfIdon’tgetenoughexercise,

________________________________4.Iwillnothaveenoughtimetostudyif________________________________

5.Iwillnotmakeanyfriendsif

________________________________

Iwillmisstheschoolbus.my

teacherwillbeangry.Iwon’tbestrong.Iplaycomputergamesalltheday.Ialwaysmakethemupset.3bCompletethesentencesusingyourownideas.3bCompletethesentencesusingyourownideas.1.IfIgetuplatetomorrow,________________________________

2.IfIdon’tfinishmyhomework,

________________________________

3.IfIdon’tgetenoughexercise,

________________________________

4.Iwillnothaveenoughtimetostudyif________________________________

5.Iwillnotmakeanyfriendsif

________________________________

IwillmisstheschoolbusmyteacherwillbeangryIwon’tbestrongIplaycomputergamesalltheday.Ialwaysmakethemupset.giveconsequences

giveconditions

3b1.WhenisMike’sbirthdayparty2.WhatdoesTina’sparentsthink3.CanTinagotothepartyTomorrownight.

TheythinkTinashouldstudyforherEnglishexam.Sorry,wedon’tknow.PracticeReadthepassagein3aandanswersomequestions.Let’sgiveTinasomeadvice.If

herparentsdon’tlethergototheparty,shewill…Ifshethinkswearingjeanslooksworst,shewill…Ifshethinks

takingataxiistooexpensive,shewill…Completethesentencesusingyourownideas.3b1．IfIgetuplatetomorrow,_______________________________2．IfIdon’tfinishmyhomework,__________________________3．IfIdon’tgetenoughexercise,___________________________4．Iwillnothaveenoughtimetostudyif____________________5．Iwillnotmakeanyfriendsif___________________________IthinkIwillgotothemoviestonight.IfIgotothemovies,Iwon’tfinishmyhomework.IfIdon’tfinishmyhomework…IfIdon’tfinishmyhomework,Iwon’tdowellinmytest.IfIdon’tdowellinmytest,myparentswillbeupset.…3cWriteastorywithyourgrouponapieceofpaper.Thefirstpersonbeginsthestorywith“IthinkIwill…”Theothersaddsentenceswith“if”.Passthepaperaroundtwice.Thenreadthestory.Ifherparentsdon’tlethergototheparty,shewill…Ifshethinkswearingjeanslooksworst,shewill…Ifshethinks

takingataxiistooexpensive,shewill

…PracticeLet’sgiveTinasomeadvice.Summary1.if條件狀語從句的含義：if意為“如果”，如果從句動作（不）發生，主句動作就（不）會發生。主將從現主情從現主祈從現2.if條件狀語從句的位置：主現從現3.if條件狀語從句的時態：在主句前或者主句后，在主句前時要用逗號隔開structureIf+……,I'll/you'll+……↘↙↘↙條件結果條件狀語從句的“主將從現”結構

2.Ifyouworkhard,youwillbesuccessful.3.Ifitdoesn’train,Iwillgoshoppingthisafternoon.1.

IfIgetuplate,

Iwillbelateforschool.1.IfIgototheparty,myparents__________________.2.IfI_____________________,I___________________.3.IfI_____________________,it___________________.4.IfI_____________________,it___________________.willbeupsetwearjeanswilllooktheworstwalkwilltakemetoolongtakeataxiwillbetooexpensive

PracticeReadthepassagein3aandfillintheblankswith“If…,…will…“.3cWriteastorywithyourgrouponapieceofpaper.Thefirstpersonbeginsthestorywith“IthinkIwill…”Theothersaddsentenceswith“if”Passthepaperaroundtwice.Thenreadthestory.IthinkIwillgotothemoviestonight.IfIgotothemovies,Iwon’tfinishmyhomework.IfIdon’tfinishmyhomework,...will/won’t...interestingimaginativecreativelogical3cpresent,youarehappy.Ihopeitwon’trainthatday.

③Becauseifitwon’train,mylittlesonwillcome,too.④I’ll

gototheparty.AndIthinkifIwillgiveyoua

②

DearJenny,

Thanksforinvitingmetotheparty.Ofcourse①Ifhecomes,youaren’tdisappointed.Heisreallyfunny.⑤OK,seeyouontheparty.Yours,

RoseExercise閱讀下面短文，把文中出現的語法錯誤改正過來willbedoesn’tgivewon’tbe一、用括號內所給單詞的正確形式填空。1.I’llbuyacomputerifI_______(have)enoughmoney.2.I’msureifhe____(go)totheparty,he________(have)agreattime.3.You_________(notget)nervousifyou____(do)enoughexercise.4.Ifshe_______(finish)workearly,she______(go)home.5.Ifit_____(rain),we________(stay)athome.6.IfI______(watch)TVthisweekend,mymother_______(be)angry.7.Ifhe_____(have)astrangehaircut,theteachers___________(notagree).havegoeswillhavedofinisheswillgorains