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1、Unit5Whatwereyoudoingwhentherainstormcame?SectionA4a-4c教案临高县皇桐中学陈萍一、教学目标：1语言目标：能运用过去时态描写过去发生的事情2技能目标：能听懂有关过去发生事件，能简单描写过去发后的事件3情感目标：能过学习本课，培养学生在困境中互帮互助的品质二、教学重点句子:1.Whatwereyoudoingateightlastnight?Iwastakingashower.2.Whatwasshedoingatthetimeoftherainstorm?Shewasdoingherh
2、omework.3.Whatwashedoingwhentherainstormcame?Hewasreadinginthelibrarywhentherainstormcame.4.WhatwasBendoingwhenitbegantorainheavily?Whenitbegantorain,Benwashelpinghismommakedinner.5.WhatwasJennydoingwhileLindawassleeping?WhileLindawassleeping,JennywashelpingMarywithherho
3、mework三、教学难点语法：过去进行时（when,while引导的时间状语从句中的过去时和过去进行时）四、教学过程Step1Revision1.Sslookatthepicturesandmakeupthesentences.2.Tchecks.Step2GrammarFocus1.读下列句子，能否总结出句子中包含的语法？(1)Whatwereyoudoingateightlastnight?Iwastakingashower.(2)Whatwasshedoingatthetimeoftherainstorm?Shewasdoingh
4、erhomework.(3)Whatwashedoingwhentherainstormcame?Hewasreadinginthelibrarywhentherainstormcame.(4)WhatwasBendoingwhenitbegantorainheavily?Whenitbegantorain,Benwashelpinghismommakedinner.(5)WhatwasJennydoingwhileLindawassleeping?WhileLindawassleeping,JennywashelpingMarywit
5、hherhomework.Step3过去进行时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(not)+动词-ing3.句式肯定式：I/He/She/Itwasworking.We/You/They/wereworking.否定式:I/He/She/Itwasnotworking.We/You/They/werenotworking.疑问式和简略回答:WasIworking?Yes,youwere.No,youwerenot.We
6、reyouworking?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
7、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。)Step4过去进行时中的when和while1.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.②Wh
8、enSallyarrivedhome,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___________
