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1、RJ八(上)教学课件Goforit!SectionA(1a-2d)学练优八年级英语上(RJ)教学课件Unit10Ifyougototheparty,you’llhaveagreattime!八年级英语(RJ上)教学课件山东省梁山县韩岗镇第一中学初中英语语法If引导的真实条件状语从句主讲:齐绪友单位:山东省梁山县韩岗镇第一中学If引导的真实条件句非真实条件句3.时态呼应1.主从句的位置2.If的两面性真实条件句If引导的条件状语从句一.定义二.主要要素if“如果,假如”它引导的句子表示“在…条件下,某事才能发生”,真实条件句用于陈述语气,表示假设的条件可能存在或发生。(主句)(主句)
2、Iwillstayathomeifitrainstomorrow.1.主从句的位置主从无逗从主有逗(从句)=Ifitrainstomorrow,Iwillstayathome.(从句)2.If的两面性Wewillgooutifitisfinetomorrow.2)Iwanttoknowifheisateacher.if在条件状语从句中翻译为“如果”if在宾语从句中翻译为“是否”↓如果↓whether2.If的两面性3.时态呼应1)主句为一般将来时态,if从句用一般现在时态(主将从现)。1.Wewillstayathomeifitrainstomorrow.2.Wearegoingt
3、ostayathomeifitrainstomorrow.注意X在if引导的条件状语从句中,当主句是一般将来时时,不能够使用begoingto结构,而要用will/shall2.If的两面性3.时态呼应3)主句为祈使句,if从句用一般现在时态(主祈从现)1.Youmuststopifthetrafficisred.2.Don’twaitformeifIamlate.2)主句中含有情态动词,if从句用一般现在时态(主情从现)1.Ifyoufinishyourhomework,youcangohomenow.2.Ifyoudrivetoofast,youmayhaveanacciden
4、t.总结If引导的真实条件句用法巧记忆:从主有逗,主从无逗;主将从现,主祈从现,主情从现;是否如果,要分清楚。2.If的两面性3.时态呼应三、练习巩固3.You maypassthe exam if you(study)hard.willcomecomeswillgive1.Iftherain_______(stop)tonight,wewillgotothecinema.一)给所给词的适当形式填空解析:if意为“是否”,引导条件句主将从现,所以从句为一般现在时2.Iwanttoknowifhe_________(come)tomorrow,ifhe_______(come),I_
5、_________(give)themassagetohim.解析:第一空,if意为“是否”,引导宾语从句,时态为一般将来时;第二三空,if意为“如果”引导条件句,主将从现解析:if意为“如果”引导条件句,主情从现stopsstudy二)选择4.Pleasestayathomeifittomorrow.A.rainsB.rainedC.willrainD.rain解析:if引导条件状语从句,主句放在从句之前,主句是祈使句,从句用一般现在时,选A5.I____hertheanswerifshe____me.A.amgoingtotell,asks B.willtell,asksC.a
6、mgoingtotell,ask D.willtell,ask解析:在if引导的条件状语从句中,当主句是一般将来时时,不能够使用begoingto结构,而要用will,选B三、练习巩固•Keywords&phrases:meeting,video,organize,chocolategototheparty,haveagreattime,stayathome,takethebus,watchavideo,potatochipsLanguageTargets•Keysentences:1.Ifyougototheparty,you'llhaveagreattime.2.Ithink
7、I'llgotothepartywithKarenandAnna.3.Ifweaskpeopletobringfood,they'lljustbringpotatochipsandchocolatebecausethey'llbetoolazytocook.•Difficultiesandpoints:If-adverbials,conditionaladverbials.Matchthestatementswiththepictures[a-d].Statement