英语人教版八年级下册Unit5 SectionA2.ppt

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1、Whatwereyoudoingateightlastnight?Iwastakingashower.Whatwasshedoingatthetimeoftherainstorm?Shewasdoingherhomework.GrammarFocusWhatwashedoingwhentherainstormcame?Hewasreadinginthelibrarywhentherainstormcame.WhatwasBendoingwhenitbegantorainheavily?Whenitbegantorain,Benwashelpinghismommakedinner.Whatwas

2、JennydoingwhileLindawassleeping?WhileLindawassleeping,JennywashelpingMarywithherhomework.1.以以when和和while引导的时间状语从句引导的时间状语从句1)延续性动词和非延续性动词延续性动词指动作可以延续一段时间,而不是瞬间结束。如:work、study、drink、eat等。非延续性动词指动作极为短暂，瞬间结束。如:start、begin、hit、jump、knock等。2)在本单元中,出现了以when和while引导的时间状语从句。when表示“当的时候”。从句中既可用延续性动词,又可用非延续性动词

3、,这些动词既可以表示动作,又可表示状态。从句中的动作既可和主句的动作同时发生,又可在主句的动作之前或之后发生。如：MarywashavingdinnerwhenIsawher.Theboywasstillsleepingwhenhismothergothomeyesterdaymorning.while表示“在的时候”、“在期间”。它强调主句的动作与从句的动作同时发生或主句的动作发生在从句的动作过程中。While从句中必须是表示动作或状态的延续性动词。如：TheweatherwasfinewhilewewereinBeijing.ShecalledwhileIwasout.如果主句的动作在从句

4、的动作过程中发生，从句常用进行时。如:Whilewewereswimmingsomeonestoleourclothes.Donttalksoloudwhileothersareworking.总结总结1)when可指时间点,又可指时间段,从句中可用延续性动词,也可用非延续性动词。2)while总是指一个时间段,从句中必须用延续性动词。1._Jenniferwasreadingamagazine,hissisterwaslisteningtothepopmusic.A.WhileB.When C.Whattime2.Iwastryingtodrawacatontheboard_theteach

5、ercamein.A.whileB.whenC.whattime3.MybestfriendvisitedmyhousewhileI_dinnerinthekitchen.A.cookedB.cookingC.wascooking练一练练一练ABC4.When_thecar_?In1885（随州市）（随州市）A.did;inventB.was;inventedC.does;inventD.is;invented5.Ourteacherwantsustobe_whenwetalkwiththeforeigners.(大连中考真题大连中考真题)A.comfortableB.unusualC.gra

6、tefulD.confidentB D 6.DickgavemeanotewhileI_inthelibrary.Iguesshemadeittosay“sorry”toyou.(黄冈市黄冈市)A.amreadingB.wasreadingC.readsD.willreadB 2.过去进行时过去进行时1.概念:表示过去某一时刻或某段时间内正进行的动作。2.构成:was/were+动词现在分词3.用法:a:表示某一时刻正进行的行为,与特定的过去时间状语连用,常见的时间有:at8lastnight,atthistimeatthattime,atthatmoment等e.g.Whatwereyoud

7、oingat10yesterdaymorning?Iwaswritingalettertomyfatheratthatmoment.b:表示过去某段时间内正进行的动作。表示过去某段时间内正进行的动作。e.g.Wewerebuildingahouselastwinter.Theywerewaitingforyouyesterday.否定句和疑问句：否定句和疑问句：e.g.Wewerenotsleepingathome.Washefeelingwell?3.现在分词的构成现在分词的构成1)一般动词在词尾加一般动词在词尾加-ing,如如go-going。2)以不发音字母以不发音字母e结尾的动词结尾的

8、动词,先去掉先去掉e,再加再加-ing。come-comingmake-makingwrite-writing3)以重读闭音节结尾的动词以重读闭音节结尾的动词,如果末尾以一个如果末尾以一个辅音字母结尾辅音字母结尾,应先双写这个字母应先双写这个字母,再加再加ing，x和和w结尾的除外。结尾的除外。如如:get-gettingswim-swimmingshow-showing4)以字母以字母y结尾的单词结尾的单词,直接加直接加ing。如如carrying、playing、studying。5)以字母以字母ie结尾的动词结尾的动词,变变ie为为y,再加再加ing。diedyinglielying6)

9、以元音字母加以元音字母加e结尾结尾,或以或以e结尾结尾,且且e发音的发音的动词动词,直接加直接加-ing。see-seeingbe-being4.使用进行时态的注意事项使用进行时态的注意事项1)一些动词,如see、hear、love、like、know、remember;understand、have等表示感情、知觉和状态的词,一般不用于进行时态。2)在there和here引起的句子中,常用一般现在时代替现在进行时。e.g.Herecomesthebus.Theregoesthebell.5.过去进行时和一般过去时的区别过去进行时和一般过去时的区别1)过去进行时表示过去正在进行的动作,而一般过

10、去时则表示一个完整的动作。如：Theywerewritingletterstotheirfriendslastnight.昨晚他们在写信给他们的朋友。(没有说明信是否写完)Theywroteletterstotheirfriendslastnight.他们昨晚写了信给他们的朋友。(表达了他们已写好的意思,整个写的过程已完成)2)当动作延续较长时间时或表示厌烦、赞美等感情色彩时,常用过去进行时表示。如：Hewasthinkingmoreofothersthanofhimself.他考虑别人的比考虑自己的多。(表示说话者赞扬的口气)Theboywasalwaysmakingtroublethen.

11、那时,他总是惹麻烦。(表示说话者厌烦的口气)过去进行时含义:表示过去某个时刻正在进行的动作。结构：was/were+doing例句：IwashavinganEnglishclassatthistimeyesterday.现在现在进行时含义含义:表示现在 正在进行的动作。结构结构：is/am/are+doing例句例句：IamhavinganEnglishclass.6.4a.Lookatthetableandwritesentenceswithbothwhileandwhen.JohnMarytakephotosbuyadrinkplaythepianoleavethehousecleanhi

12、sroomturnontheradioshoptakethecartothecarwashe.g.WhileJohnwastakingphotos,Maryboughtadrink.JohnwastakingphotoswhenMaryboughtadrink.WhileJohnwasplayingthepiano,Maryleftthehouse.JohnwasplayingthepianowhenMaryleftthehouse.WhileJohnwasshopping,Marytookthecartothecarwash.Johnwasshoppingwhentookthecartoth

13、ecarwash.WhileJohnwascleaninghisroom,Maryturnedontheradio.JohnwascleaninghisroomwhenMaryturnedontheradio.4b.Fillintheblankswithwas,were,whenorwhile.At7:00a.m.,Iwokeup._I_makingmybreakfast,mybrother_listeningtotheradio._Iwaseating,theradionewstalkedaboutacaraccidentnearourhome.MybrotherandIwentoutrig

14、htawaytohavealook._wegottotheplaceoftheaccident,thecar_inbadshapefromhittingatree.Butluckily,thedriver_fine.Theroads_icybecauseoftheheavysnowfromthenightbefore.WhilewaswasWhileWhenwaswaswere4c.WhatwereyoudoingatthesetimeslastSunday?Fillinthechart.Thenaskyourpartner.A:Whatwereyoudoingatnineoclocklast

15、Sundaymorning?B:Iwassleeping.Howaboutyou?A:Iwasdoingmyhomework.B:Yourekidding!GroupworkYouStudent1Student29:00amrunreadhavebreakfast11:30amwashswimwalk4:00pmreadbooks9:00pmwatchTVWhat were you doing at last Sunday?9:00am11:00am8:00pm10:00pmA:WhatwereyoudoingatnineoclocklastSunday?B:Iwasrunning.Howab

16、outyou?A:Iwasreading.B:Yourekidding!v.欺骗欺骗;戏弄戏弄;开玩开玩笑笑1.What_(be)you_(do)whenhearrived?2.Jim_(sleep)whenIcamein.3.They_(watch)TVat8:00yesterdayevening.4.Nowhe_(read)and_(write).weredoingwassleepingwerewatchingisreadingwriting.用所给词的正确形式填空用所给词的正确形式填空5.Mother_(wash)clotheswhenI_(get)homefromschoolyeste

17、rdayafternoon.6.Look,mysister_(be)thereinthebarbershop.Thebarber_(cut)herhair.7.-When_you_(see)theaccident?-I_(see)itfifteenminutesago.waswashinggotisiscuttingdidseesaw.Translatethesesentences.1.上课铃响时上课铃响时,你在干什么你在干什么?What_you_whentheclassbellrang?2.当我妈妈进来时我正在看书当我妈妈进来时我正在看书.I_whenmymothercamein.3.昨天晚

18、上十点钟她正在做饭昨天晚上十点钟她正在做饭.She_attenoclock_.weredoingwasreadingwascookinglastnight4.当飞机起飞的时候当飞机起飞的时候,天正下着大雪。天正下着大雪。It_heavilywhentheplane_.5.瞧瞧,孩子们正在追逐一只小猫。孩子们正在追逐一只小猫。Look!Thechildren_asmallcat.6.我女儿正在写信时我女儿正在写信时,其他的孩子都在外面玩耍。其他的孩子都在外面玩耍。Mydaughterwaswritingaletter_theotherchildren_outside.tookoffwerepla

19、yingwassnowingarechasingafterwhile1.昨天早上昨天早上9点钟你在干什么点钟你在干什么?2.不明飞行物起飞时，小明正在骑自行车。不明飞行物起飞时，小明正在骑自行车。3.那时，他们正在做家庭作业。那时，他们正在做家庭作业。Whatwereyoudoingat9oclockyesterdaymorning?XiaoMingwasridinghisbikewhentheUFOtookoff.Theyweredoingtheirhomeworkatthattime.翻译翻译4.今早给你打电话的时候今早给你打电话的时候,你正在干什么？你正在干什么？5.当他正睡觉的时候他梦见了当他正睡觉的时候他梦见了UFO.6.当李雷在吃早饭时当李雷在吃早饭时,吉姆进来了吉姆进来了.WhatwereyoudoingwhenIcalledyouupthismorning?Whilehewassleeping,shedreamedaboutUFO.WhileLiLeiwashavingbreakfast,Jimcamein.HomeworkWhatwereyoudoingatthesetimeslastSunday?Practicemorewithyourclassmates.