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1、人教版新目标八年级下第3单元第1课时学案Unit3WhatwereyoudoingwhentheUFOarrived?SectionA(1a—2c)【学习目标】1.熟读并记住这些单词（a）UFO,(an)alien,barber,barbershop,bathroom,bedroom,kitchen,,bought（buy的过去式）,got（get的过去式）,land,while。2.会用短语getout(ofsomeplaces),takeoff，并能造句。3.会用“was/were+doing”结构谈论过去某个时间正在发生或进行的事情。【重点难点】重点：认识语法
2、结构---过去进行时态,掌握其意义、构成和用法,并能熟练运用。难点：When和while的用法。【新知预习】一、写出下列动词的ing形式和过去式形式。gogettakebuylandvisitstandstudycleansleepwalkstopmakecooktalkeat二、用括号中所给单词的适当形式填空，每空一词。1.Whatyou(do)at6:00yesterday?2.I(write)aletterwhenmymothercamein.3.Tina(notread)abookwhenthebellrang.4.WhileTom(clean)hisroo
3、m,amancalledhim.5.We(wash)ourclothesatfouryesterdayevening.6.They(cook)dinnerinthekitchenwhenIcalledthem.【课堂探究】探究谈论when和while的用法。When用作并列连词，连接并列句，意思是“正在这时”，相当于atthattime.如：Iwasdoingmyhomeworklastnightwhensuddenlythelightwentout.昨晚我正在做作业，这时灯突然灭了。而While除了可以和when引导的句子进行同义句转换之外，还有另外一层含义“at
4、thesametime”“与……同时”。如：Whilemomwaslisteningtomusic,dadwasreadingabook.妈妈正在听音乐，爸爸正在看书。【针对性练习】用“when”或“while”完成下列句子。1.WhatwereyoudoingFeiJunlongandNieHaishenggotoutoftheShenzhouVI?2.ImetMr.WangIwaswalkingtoschool.3.Allencalled,thetwinswereplayingtabletennis.4.itwasrainingheavily,twomenarr
5、ivedatmyhouse.【达标练习】12一、根据句意和所给首字母提示完成单词。1.Theplanelsafely.2.Momwascookingdinnerinthekatthistimeyesterday.3.Excuseme.Isthereabshopnearhere?Ineedtocutmyhair.4.IwaswalkingdthestreetwhenaUFO landed.二、按括号内要求完成下列句子。1.HissisterwasrunningwhentheUFOlanded.（对划线部分提问）（用while改写这个句子）2.Iwaswashingmy
6、hairateightyesterdayevening.（改为否定句）（改为一般疑问句并做出肯定、否定回答）3.MyparentswereworkingwhenIcame.(同上)4.Whatwereyoudoingat11:00yesterdaymorning?(我正在图书馆里看书。)三、用括号内所给动词的适当形式填空。1.She(swim)intherivernow.2.I(help)mymomdothehouseworknow.3.Look!They(run)inthestreet.4.Listen!Hissister(sing)intheroom.5.Yes
7、terdaythey(go)tothezootogether.6.Mymother(buy)agiftatmylastbirthday.7.Theplane（take）offlastnight.8.Whenyou（get）upyesterdaymorning?四、英汉互译。在厨房里inthebedroom走出教室infrontofthelibrary起飞atabouteighto’clock在理发店里walkdownthestreet买个纪念品callthepolice【学后反思】_________________________________________
