八年级英语下册《Unit3WhatwereyoudoingwhentheUFOarrivedSectionA》学案（无答案）【教师寄语】Nothingisdifficultifyouputyourheartintoit.世上无难事，只怕有心人。【知识目标】本课的13个单词以及相应的动词短语、介词短语。①A:WhatwereyoudoingwhentheUFOarrived?B:IwasstandinginfrontofthelibrarywhentheUFOarrived.②A:WhatwastheboydoingwhentheUFOlanded?B:Hewassleepinglate.【能力目标】熟练运用本课词汇及句型谈论在过去某一时间发生的事情。.【情感目标】培养学生正确的价值观。【重点】过去进行时was/were+doingsth.【难点】过去进行时时态的熟练运用，when和while的用法区别【学习过程】Step1Dothefollowingexerciseandchecktheanswersbygroupleader.1.一个飞碟_____________2.理发店_________3.在盥洗室_________4.在卧室__________5.在厨房里____________6.出去_______________7.一个外星人__________8.buy(过去式)__________9.get(过去式)______10.一次不寻常的经历______11.起飞________12.kid(现在分词)_________Step2Grammar（一）过去进行时1.含义：表示过去的某一时刻或某一时间内正在进行或发生的动作。2.构成：was/were+v-ing。3.标志：atthattime,thistimeyesterday,alltheevening,from8:00to10:00yesterday,justthen,atnineyesterday,when等表示明确有具体的时间状语。eg：Iwasdoingmyhomeworkatthistimeyesterday.WhatwasTomdoingattenyesterday.Iwaseatingdinnerwhenthephonerang.4.具体的句型：(1)肯定句：主语+was/were+v-ingeg：Theywerehavingameetingthattime.(2)否定句：主语+wasnot(wasn’t)/werenot(weren’t)+v-ing上句改写为：Theywerehavingameetingthattime._____________________(3)一般疑问句式：Was/Were+主语+v-ing？肯定回答：Yes，…was/were.否定回答：No，…wasn’t/weren’t.Eg：Wasshereadingabookwhentheteachercamein?Yes,shewas./No,shewasn’t.(二)when与while用法1.when是“当……时候”，相当于atthattime,既可以表示某一时刻又可以表示某一段时间，所以when引导的时间状语从句动词既可以是延续性的，又可以是非延续性的。when引导的时间状语如果是一般过去时，主句一般用过去进行时。而while也意为“当……时候””，相当于duringthetime，表示某一段时间历里的情况，故其引导的时间状语从句中的动词必须是延续性的。eg：WhileIwaswatchingTV,mymothercameback.=Whenmymothercameback,IwaswatchingTV.2.while重在强调其后的动作与助于动作的对比，表示“与此同时”。eg：ShewaslisteningtomusicwhileIwasplayingcomputergames.3.when/while练习1）_____theteachercamein,weweretalkingandlaughing.2)Igothome______mymotherwascookingdinner.3)Theyweredancing_____wecametomeetthem.4)_______thealienwasvisitingthemuseum,theboycalledthepolice.Step3学习3a部分1.读课文，写出下列短语和句型。1)一次不寻常的经历__________2)大约在十点左右3)跟随某人做某事______4)它是多么的奇怪！_______5)当它走进一家礼品店的时候我感到非常惊讶。__________________________________________6)太不可思议了。__________________________________2.再读短文，回答问题。1）WhendidtheUFOland?whatwasthewriterdoing?2)Whatplacesdidthealiengo?whatdidtheydo?3)Didthealienbuyanysouvenirsintheshop？4)Whatdidthewriterdowhilethealienwasinthemuseum?【当堂达标】（一）根据句意及首字母完成单词1.MysisterwaswatchingTVw_______shewashavingsupper.2.Mymotherwascookinginthek_______whenIgothomeyesterday.3.Myfriendb_________meabookasabirthdaypresentlastweek.4.Theplanel_______safelyatlast.5.IgraduatedfromShandongUniversitythisyear.SoIhavenoe_______inteachingEnglish.(二)用所给词的适当形式填空1.Whatan________(amaze)sight!2.IoftenseeMrs.Green________(water)flowersinhergarden.3.Whentheycameintotheroom,JackandMike________(read)books.4.WhileI________(sing)anEnglishsong,he________(come)in.5.What______you_______(do)atthistimeyesterday?6.We________(listen)totheradioat7:00yesterdayevening.(三)单项填空1.Weheardsomeome______inthenextroom.A.singsB.sangC.tosingD.singing2.Therearemanytrees_____theclassroom.A.infrontofB.inthefrontofC.infrontD.atthefront3.Hismotherwantedtoknowwhathe______atthattime.A.isdoingB.wasdoingC.hasdoneD.willdo4.-Iwasdoingmyhomeworkateighto’clocklastnight.
