Unit3WhatwereyoudoingwhentheUFOarrivedSectionB(1-2c)【重难点预测】1.while的用法。2.一般过去时和过去进行时的区别。【新知导学】1.—Whatareyoudoing?—I’mdoinghomework.2.—Whatwereyoudoingatthistimeyesterday?∕Whatdidyoudoyesterday?—Iwasdrawingapicture.∕Ihadmanyclasses.【自主预习】1.请同学们先认真阅读学习目标，然后仔细研读课本P21，看完后将所学到的东西进行归纳，画出重要知识点，用红笔做好疑难标记。2.试着读一读单词表中本课时的新单词（或词组），将不会的单词圈出来，然后通过听磁带或求助于其他等方式将单词读准、读熟。3.写出下列动词的过去式。climb____________jump_____________shout____________see________________say______________call______________take______________ride_______________4.写出下列词组的意思,如有困难，可参考资料。bescaredof____________climbatree_________________jumpdown______________shoutat/tosb___________inatree/onatree_____________policeofficer____________5.翻译下列句子，并模仿造句。1)Thecatisclimbingatree.______________________________________________________________________________________________________________________________________________________________2)WhileIwastalking,thebellrang._____________________________________________________________________________________________________________________________________________________________6.观察课本P20上1a的图片，根据model编对话。A:Whatisthegirldoing?B:She’sshouting.Pictureb:A:____________________________________________________________________________B:____________________________________________________________________________Picturec:A:____________________________________________________________________________B:____________________________________________________________________________Pictured:A:___________________________________________________________________________B:____________________________________________________________________________【合作探究】任务1：完成课本P21上2a和2b的听力训练题，在听之前充分利用2a表格中的词组和2b表中的人物大胆预测听力内容，为听力做好铺垫。任务2：讲故事。听力完成之后，读一读听力材料，再用while在小组内讲一讲这个故事，注意一般过去时和过去进行时的运用。考点聚焦◆一般过去时和过去进行时的区别1.一般过去时：过去某个时间发生的动作、存在的状态或过去经常发生的动作。谓语动词用动词的过去式，常与ago,yesterday,in2010,lastweek(year,night,month…)，justnow等连用。如：Iboughtaskirtformydaughteryesterday.MissGreenwasintheclassroomamomentago.2.过去进行时：表示过去某一时刻或某一段时间内正在进行或发生的动作，由was/were+动词的-ing形式构成，常与thistimeyesterday,atthattime,at9:00lastnight等时间状语以及when和while等引导的时间状语从句连用。如：Theyweresingingsongsthistimelastnight.ItwasrainingwhenIarrivedatthestation.Hewassellingthenewspaperwhilehewaswaitingforthebus.练一练：用词的适当形式填空1.Mymother______________(clean)thebedroomfiveminutesago.2.WhenIlefttheoffice,it____________(rain)heavily.3.When___________you___________(go)tobedlastnight?4.What____________theboys_____________(do)whenyousawthem?◆shoutto与shoutat区别shouttosb.是为了让那人听到或听清而大喊。shoutatsb.是因为生气而非善意地向某人吼，带有攻击性。练一练：用at和to填空1.Don’tshout__________theoldlady.Itisimpolite.2.Myfriendshouted__________metogiveherahand.【学案整理】___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________SectionB(1–2c)练一练：1.cleaned2.wasraining3.did,go4.were,doing练一练：1.at2.to
