Unit 10 SectionA Grammar focus-3c課件-人教版八年級英語上冊

Unit10ifyougototheparty,you’llhaveagreattime!SectionAGrammarFocus學(xué)習(xí)if引導(dǎo)的條件狀語從句的用法LearningObjectivesPresentationRevisionLookandsay.Lookatthepicturesandmakesentenceswith“if”.IfyougotothepartywithKarenandAnna,you’llhaveagoodtime.Ifyouwearjeanstotheparty,theteacherswon’tletyouin.Ifyoutakethebustotheparty,you’llbelate.Ifyoustayathome,youwillbesorry.根據(jù)課本內(nèi)容，完成下列句子。

1.我想我將會(huì)乘公共汽車去參加聚會(huì)。I_____I’lltakethebustothe______.2.如果你那樣做，你將會(huì)遲到。Ifyou_____,_____belate.3.我想我將待在家里。I__________stayathome.4.如果你那樣做，你將會(huì)覺得很抱歉。Ifyou____,__________sorry.5.如果他們今天聚會(huì)，將會(huì)發(fā)生什么事？_______________ifthey_____thepartytoday?doyou’llthinkparty

thinkI’lldoyou’llbeWhatwillhappenhaveGrammarfocus6.如果他們今天聚會(huì)，班里一半的學(xué)生將不會(huì)去。Ifthey______thepartytoday,______theclass_______come.7.我們應(yīng)當(dāng)要求人們帶食物來嗎？Shouldwe______peopleto______food?8.如果我們要求人們帶食物來時(shí)，他們將會(huì)只帶薯?xiàng)l和巧克力。______we______peopletobringfood,________just______potatochipsandchocolate.havehalfwon’taskbringIfaskthey’llbringGrammarfocusPresentationIthinkI’lltakethebustotheparty.Ifyoudo,you’llbelate.IthinkI’llstayathome.Ifyoudo,you’llbesorry.Whatwillhappeniftheyhavethepartytoday?Iftheyhaveittoday,halftheclasswon’tcome.Shouldweaskpeopletobringfood?Ifweaskpeopletobringfood,they’lljustbringpotatochipsandchocolate.[if引導(dǎo)的條件狀語從句]GrammarfocusIwillhaveagoodtimetomorrow.Iwillgotothepartytomorrow.IfIgotothepartytomorrow,I’llhaveagoodtime.合并在句子中作條件狀語的從句被稱為條件狀語從句。If引導(dǎo)一個(gè)條件狀語從句當(dāng)主句是一般將來時(shí)時(shí),if引導(dǎo)的從句必須用現(xiàn)在時(shí)來，表示將來可能發(fā)生的動(dòng)作或存在的狀態(tài)。從句主句主句從句（一般現(xiàn)在時(shí)）（一般將來時(shí)）（一般現(xiàn)在時(shí)）（一般將來時(shí)）主將從現(xiàn)Ifyoudo,you’ll

belate.You’ll

belateifyoudo.if條件狀語從句Grammarfocus用法if條件句的主句和從句的時(shí)態(tài)搭配一般有下面幾種情況：1．主句是______________，if從句用____________。Ifheruns,he'llgetthereintime.如果跑的話，他就會(huì)及時(shí)趕到那兒。Iwilltellhertheanswerifsheasksme.如果她問我，我就會(huì)告訴她答案。一般將來時(shí)一般現(xiàn)在時(shí)Grammarfocus2．主句是含有may/might/can/must/should等情態(tài)動(dòng)詞的句子，if從句用一般現(xiàn)在時(shí)。Ifitstopssnowing,wecangoout.如果雪停了，我們就可以出去。Ifyouwanttoloseweight,youmust/shouldeatlessbread.如果想減肥，你必須/應(yīng)該少吃面包。Grammarfocus2.if條件狀語從句中，如果主句有

must，can，may

等情態(tài)動(dòng)詞，從句用___________。

例如：Youmuststopifthetrafficlight____(be)red.is一般現(xiàn)在時(shí)if引導(dǎo)的條件狀語從句3．主句是祈使句，if從句用一般現(xiàn)在時(shí)。Don'tgotoplayfootballifyoudon'tfinishyourhomework.如果你沒完成作業(yè)，就不要去踢足球。[拓展]if還可以譯為“是否”，用來引導(dǎo)賓語從句。此時(shí)if和whether是同義詞，可以互換。如果ornot放在whether所引導(dǎo)的從句句尾，則可以用if來替換。但當(dāng)ornot緊跟在whether之后時(shí)，只能用whether。Grammarfocus例如：Don’twaitformeifI_____(be)late.3.if條件狀語從句中，主句是祈使句，從句用____________表示將來。

_________原則。am主祈從現(xiàn)一般現(xiàn)在時(shí)if引導(dǎo)的條件狀語從句Sheaskedmeif/whetherIknewMike(ornot)．她問我是否認(rèn)識邁克。Iwonderwhetherornothewillcometomyparty.我想知道他是否會(huì)來參加我的聚會(huì)。Fillintheblankswiththecorrectformsoftheverbsinbrackets.DearSuMei,Idon't________(know)whatto________(do)aboutgoingtoMike'sbirthdaypartytomorrownight.Myparents________(think)IshouldstudyformyEnglishexamnextweek.IfI________(go)totheparty,they___________(be)upset.

Mike________(tell)ustowearniceclothes,butIdon't________(have)any.knowdothinkgowillbetoldhave3aIfI________(wear)jeans,I____________(look)theworst.Also,I'mnotsurehowto________(go)totheparty.IfI______(walk),it_________(take)metoolong.IfI________(take)ataxi,it____________(be)tooexpensive.Canyougivemesomeadvice

please?Tinawearwilllookgowalkwilltaketakewillbe321TogoornottogoWhattowearHowtogetthereHowmanyproblemsdoesTinameet?Ifshegoestotheparty,herparentswillbeupset.Ifshewearsjeans,shewilllooktheworstIfshewalks,itwilltakehertoolong.Ifshetakesataxi,itwillbeexpensive.3bCompletethesentencesusingyourownideas.1.IfIgetuplatetomorrow,____________________________________.2.IfIdon’tfinishmyhomework,________________________________.theschoolbuswillbeangrymy

teacherIwillmiss3.IfIdon’tgetenoughexercise,____________________________.

4.Iwillnothaveenoughtimetostudyif________________________________.

5.Iwillnotmakeanyfriendsif______________________________________.

bestrongcomputergamesallthedaymakethemupsetIplayIwon’tIalwaysCompletethesentencesusingyourownideas.1.IfIgetuplatetomorrow,_________________________________2.IfIdon’tfinishmyhomework,_____________________________3.IfIdon’tgetenoughexercise,______________________________4.Iwillnothaveenoughtimetostudyif________________________5.Iwillnotmakeanyfriendsif_______________________________Iwillbelateforschool.theteacherwillbeangry.Iwillbefat. IwatchTVtoomuch.Iamtooshy.3bIthinkIwillgotothemoviestonight.IfIgotothemovies,Iwon’tfinishmyhomework.IfIdon’tfinishmyhomework…3cWriteastorywithyourgrouponapieceofpaper.Thefirstpersonbeginsthestorywith“IthinkIwill…”Theothersaddsentenceswith“if”.Passthepaperaroundtwice.Thenreadthestory.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;willbeBCB4.Ifyou_____hard,youwill___successful.