牛津译林英语-九年级上册Unit2Grammar-(共21张PPT)

9AUnit2GrammarTheObjectClause一、教学目标学习宾语从句用法二、教学重点和难点1由引导词that,if/whether引导的宾语从句2宾语从句中时态的变化Hedoesn’tsayanything.HesaysheisfromItaly.HeaskedifIwasChinese.Hedidn’tsayaword.(代词作宾语)(名词作宾语)(句子作say等的宾语)宾语从句:宾语从句是指在复合句中充当宾语的句子。Hesays…Heasked…与Shewonders是主句ShewonderswhatIdid.一.由从属连词that引导的宾语从句注：that在句中无词义，在从句中不充当成分,在口语当中往往省略。用法：常用在一些动词和介词后，比如think,believe和know等。有时也用于一些形容词后，如certain,sure等。I’msurethatyouwillsucceed.Iwassurprisedatwhathehaddone.把下列句子合并成一句。1.Heisdoinghishomework.Hesays.2.TheyhavebeentoBeijing.Hethinks.3.Youspokeatthemeeting.Theybelieve.Hesays(that)heisdoinghishomework.Hethinks(that)theyhavebeentoBeijing.Theybelieve(that)youspokeatthemeeting.二.由从属连词whether,if引导的宾语从句注：if/whether“是否”，说明对陈述的事物不明确或不清楚。不能省略,但不充当成分。常用在ask,wonder,can(could)youtellme等后。将下列句子合并成一句1.Askhim.Canhecome?2.Iwonder.Isitgoingtorain?3.Couldyoupleasetellme?DoesMrLilivehere?Askhimif/whetherhecancome.Iwonderif/whetheritisgoingtorain.Couldyoupleasetellmeif/whetherMrLiliveshere?三.只能用whether不能用if的情况1.在介词后面Weareworriedaboutwhetheritwillbeveryhottomorrow.Theyaskedmewhethertogoonabike.2.在动词不定式前Idon’tknowwhetherornottheywillcometoourparty.Tellmewhetheryou’dliketowalkortakeabus.3.当与ornot连用，或提出两种选择时:4.宾语从句提前时：Whetherthisistrueornot,Ican’tsay.Wediscussedwhetherweshouldholdameeting.5.在discuss(讨论)等少数动词后引导宾语从句时：选择题:()1.Amysays____shehasneverbeentoBeijing.A.ifB.whetherC.that()2.Iwonder____hestillliveshere.A.whetherB.thatC./()3.Letmeknow____youcancomeornot.A.whetherB.ifC.thatCAA()4.Idon’tknow____toacceptorrefuse.A.ifB.whetherC.that()5.Idon’tknow_____hewillcometomorrow.____hecomes,I’lltellyou.A.if;WhetherB.whether;IfC.if;That()6.____youaskhim,hewillhelpyou.A.WhetherB.IfC.ThatBBB7.Shesaid____shehadtimeshewouldgotoYushu.A.thatifB.whetherC.thatD.thatwhetherA宾语从句三要素:☆引导词（连接词）☆语序☆时态Summary:Attention:1.宾语从句语序一律为陈述句语序2.当疑问词what,who等作从句主语时，语序不变：我不知道昨天他发生了什么事情?Idon’tknow______________yesterday.老师问我们今天谁值日。Theteacherasks_____________today.whathappenedtohim/whatwaswrongwithhimwhoisonduty3时态：1.当主句的谓语动词是现在时,宾语从句的谓语动词可以用所需要的任何一种时态。2.当主句的谓语动词是过去时，宾语从句的谓语动词要用相应的过去时态，但当宾语从句叙述的内容为客观真理时，仍然用一般现在时。1.当主句的谓语动词是一般现在时，宾语从句时态依句意而定。否定转移问题跟在think,believe,suppose等动词后面的宾语从句，对从句谓语动词的否定，通常要将否定词not移到主句的谓语动词上面去，即通过否定主句的谓语动词来否定从句的（意义）谓语动词，即否定转移。此时变反意疑问句时仍将宾语从句视为否定，反意疑问部分用肯定形式。如：Idon'tthinkhewillcome,willhe?Ithinkhewillcome,won'the?1.I______thinkhe_________________________________.（我认为一小时后他不会回来。）2.I______believethey__________thegame.（我相信他们不会赢得这场比赛。）1.Idon’tbelievetheywillwinthegame,___________?2.Shesupposedthatwecouldn'tarrivesoearly,____________?don’twillbebackinanhourdon’twillwinwilltheydidn’tshe用所给词的适当形式填空1.Theradiosaidit_______(be)cloudyyesterday.2.Tomsaysthatthey____________(play)basketballatsixo’clockyesterdayevening.3.Iheardthey______________(return)italready.4.Ithoughthe____________(come)thenextSunday.5.Idon’tknowwhohe_______thelettertoyesterday.(write)6.Theteachersaidtheearth______(go)aroundthesun.waswereplayinghadreturnedwouldcomewrotegoesMoreexercises1.Ihear_________________________.（一小时后他会回来）2.Hesaid_______________________.（他非常想念我们）3.Theteachertoldus___________________________________.（光速比声音快得多）hewillbebackinanhourhemissedusverymuchlighttravelsmuchfasterthansound4.Iamnotsure_________________________________.（他是否跟我们一起去公园）5.Askhim_____________________________.（他是否能来）6.Idon’tknow____________________________________.（是否要下雨）if(whether)hewillgototheparkwithuswhether(if)hecancomewhetheritisgoingtorainornotHomework1.Finishtheotherexcerciseinexercisebookandtextbook.2.Reviewwhatwehavelearnedinthisclass.