Unit3WhatwereyoudoingwhentheUFOarrived?PeriodOne(SectionA1a-2c)学习目标：Newwords:UFO,barber,bathroom,alien,kitchen,bought,land,got,whileKeyphrases:getout,takeoffKeysentences:⑴.—WhatwereyoudoingwhentheUFOarrived?—Iwascookingdinnerinthekitchen.⑵—WhatwashedoingwhentheUFOarrived?—Hewassleepinglatewhenitarrived.⑶Thegirlwasshoppingwhenthealiengotout.⑷Whilethegirlwasshopping,thealiengotout.学习重难点：◆重点掌握过去进行时态的用法。◆难点掌握when和while的用法。前置学习:一.仔细观察下的对话,用“_____”标出对话中所出现的时间，并补全句子.1．A:Whatareyoudoingnow?B:Iamdoingmyhomeworknow.TheyarehavinganEnglishlesson.2．A:Whatwereyoudoingat9o’clocklastnight?B:Iwasdoinghomework.C:_________________________________(我正在打扫我的房间).A:Whatwereyoudoingwhenyourmothercamebackyesterday?B:I______________________________________(我正在讲电话).试总结:对话1用了______进行时态,对话2用了__________进行时态.二.根据下面的表格完成问答.IJimThey4:00pmlastSundaycuttinghairwalkingdownthestreetplayingtennisattheplaygroundwhentheUFOlandedgettingoutofthelibrarymakingamilkshakesleepinglate例如：A:Whatwereyoudoingat4:00lastSundayafternoon?B:Iwascuttingmyhair.A:What_____you_________whentheUFOlanded?B:I________thelibrary..A:What_____Jim______4:00lastSundayafternoon?B:He_______________thestreet.A:______Jimdoing___________?B:He________________.A:What_________theydoing_____________?B:They____________attheplayground.A:______they_______whentheUFOlanded?B:They______________________________.通过以上的练习你能归纳出过去进行时be动词的规律吗？I/He/She+_______+doingThey/You+_______+doing三．A.将下面的句子翻译成中文，并仔细观察进行比较。1.TheboywaswalkingdownthestreetwhentheUFOlanded.2.Thegirlwasshoppingwhenthealiengotout.3.Whiletheboywaswalkingdownthestreet,theUFOlanded.4.Whilethegirlwasshopping,thealiengotout.总结：When与while:都是“当……的时候”,但如3.4句,后接的动词用过去进行时，多选用____;而后接的动词用一般过去时态时，用_____.B.根据句意，选词填空1.ShewaswatchingTV___(when/while)hermothercamein.2.____(When/While)theboywaswalkingdownthestreet,theUFOlanded.3.What______(washappening/happened)whilethey______(wereswimming/swam)intheriver.4.It_______(wasraining/rained)hardat9:00pmlastnight.5.Helen________(wasreading/read)underthetreewhentheUFO__________(waslanding/landed).展示交流:I翻译下列短语1)理发店__________2)在图书馆前边3)做饭4)做奶昔5)打电话6)洗完澡出来7)理发8)航空博物馆9)从飞碟出来10)起飞_________11)电视台_____12)报警_____13)沿着街走____________14)睡过头________IIMatching1a合作探究：Task1Listening&speaking.(1b&1c)Task2Listening&speaking（2a-2c）达标拓展:1、写出本课的主要语法结构：过去进行时构成---__________________________具体用法：过去进行时表示在_____________某一时间内___________或___________的动作。和一般过去时的区别：2、本课的when和while的用法：（1）when引导的从句时态多为______和___________（2）while引导的从句时态多为_________________.3、arrive,get和reach的区别。三者都有“______”之意，但arrive表“到达某地”时，后面必须跟介词____或____;get后跟地点名词时要加介词______;reach后则可直接跟地点名词。如:gettoBeijing=_______/______温馨提示:gethome/there=arrivehome/there=reachhome/there教学评价:I．用when和while填空1.Mymotherwasdoingthehousework______Iwasdoingmyhomework.2.______myfathercameback,IwaswatchingTV.3._________hewentout,itwasraining.4.______Tomwascleaninghisroom,thetelephonerang.5.Wewereplayingoutside____...
