（人教版）英语八年级下Unit5SectionA3(Grammarfocus-4c)课件VIP专享VIP免费

WhenI…Hewasdoing…WhenIcalledhimup,hewassleeping.Makeupthesentences.WhileI…Hewasdoing…WhileIwalkedtoschool,hewaseating.WhenI…Hewasdoing…WhenIreadthenewspaper,hewaswatchingTV.Whatwereyoudoingateightlastnight?Iwastakingashower.Whatwasshedoingatthetimeoftherainstorm?Shewasdoingherhomework.读下列句子,你能总结出句子中包含的语法吗？Whatwashedoingwhentherainstormcame?Hewasreadinginthelibrarywhentherainstormcame.WhatwasBendoingwhenitbegantorainheavily?Whenitbegantorain,Benwashelpinghismommakedinner.WhatwasJennydoingwhileLindawassleeping?WhileLindawassleeping,JennywashelpingMarywithherhomework.1.基本概念过去进行时表示在过去某一时刻或一段时间内正在进行的动作。这一特定的过去时间除有上下文暗示以外,一般用时间状语来表示。2.结构was/were+动词-ing例如:A:Whatwereyoudoingateightlastnight?昨晚八点你在干什么？B:Iwastakingashower.我(当时)在淋浴。A:Whatwashedoingwhentherainstormcame?暴风雨来的时候他在干什么？B:Hewasreadinginthelibrarywhentherainstormcame.暴风雨来的时候他在图书馆看书。A:WhatwasJennydoingwhileLindawassleeping?琳达在睡觉的时候,珍妮在做什么？B:WhileLindawassleeping,JennywashelpingMarywithherhomework.琳达在睡觉的时候,珍妮在帮助玛丽做作业。肯定式：I/He/She/Itwasworking.We/You/They/wereworking.否定式:I/He/She/Itwasnotworking.We/You/They/werenotworking.3.句式(以work为例)疑问式和简略回答:WasIworking?Yes,youwere.No,youwerenot.Wereyouworking?Yes,Iwas.No,Iwasnot.Washe/she/itworking?Yes,he/she/itwas.No,he/she/itwasnot.Werewe/you/theyworking?Yes,you/we/theywere.No,you/we/theywerenot.注：1)Wasnot常缩略为wasn’t;werenot常缩略为weren’t。2)一般过去时与过去进行时用法的比较:一般过去时表示在过去某个时间发生过的动作或存在的状态,而过去进行时则表示在过去某一时刻或某一段时间正在进行的动作。例如:Davidwrotealettertohisfriendlastnight.大卫昨晚给他的朋友写了封信。(信写完了。)Davidwaswritingalettertohisfriendlastnight.大卫昨晚一直在给他的朋友写信。(信不一定写完。)atfiveyesterdayafternoonA:Whatwastheboydoingattableatfiveyesterdayafternoon?B:Hewasspeakingwithagirl.A:Wasthegirlatthetablewriting?B:No,shewasn’t.when和while都可表示“当……的时候”，引导时间状语从句。你知道两者在过去进行时中的用法有什么不同吗？请仔细观察下面的例句，然后补全空格中的内容。①IwaswalkingtoschoolwhenIsawacatinatree.②WhenSallyarrivedhome,hermotherwascleaningthehouse.主句的动作是持续性的，而从句动作是短暂性的，此时用______引导时间状语从句，主句用__________时态，从句用一般过去时态。过去进行when③WhileIwassleepinginthebedroom,someoneknockedatthedoor.④Davidfellwhilehewasridinghisbike.主句的动作是短暂性的，从句的动作是持续性的，此时用_______引导从句，主句用__________时态，从句用过去进行时态。一般过去while⑤WhileAndywaswaitingforthebus,hewasreadinganewspaper.⑥HewascleaninghiscarwhileIwascooking.主句和从句的动作在过去的某时刻或某段时间同时发生，而且动作都是持续性的，此时用_________引导从句，而且主句和从句都用____________时态。过去进行while将下列汉语句子翻译成英语。1.当我正在网上查找信息的时候，门铃响了。WhileIwaslookingforinformationontheInternet,thedoorbellrang.2.当我看见他的时候，他正在做一架模型飞机。HewasmakingamodelplanewhenIsawhim.3.当我正在跑步的时候，我妈妈和我妹妹正在放风筝。WhileIwasrunning,mymotherandmysisterwereflyingakite.Lookatthetableandwritesentenceswithbothwhileandwhen.JohnMarytakephotosbuyadrinkplaythepianoleavethehousecleanhisroomturnontheradioshoptakethecartothecarwash4a1.WhileJohnwastakingphotos,Maryboughtadrin...