英语人教版八年级下册第二课时.ppt

Unit5Whatwereyoudoingwhentherainstormcame?,第二课时SectionA23a-4c,自主学习,根据句意和及首字母提示完成句子。1.Theweatherrsaysitisgoingtoraintomorrow.2.Weshouldgrowmoretreestostopthewindbtheearthaway.3.Couldyoupleaseopenthew?4.Wecanusemtomakefire.5.Peoplecutdowntoomuchwandsomeforestshave,eport,lowing,indow,atches,wood,Step1情景导入,Hello,boysandgirls!Haveyouexperiencedsomethingimportant?Doyoustillrememberwhatyouweredoingwhenithappened?,S:Iwaslisteningtomusic.Iwasdoingmyhomework.Iwasridingabike.,Lookatthepictureandthinkaboutwhathashappened.,课堂导学方案-Step2/3a-3c,3aReadthepassageandanswerthefollowingquestions.,1.Whatwastheweatherlikebeforetheheavyrainstarted?2.Whatwastheneighborhoodlikeafterthestorm?,Reading,3aReadthepassageandanswerthefollowingquestions.,1.Whatwastheweatherlikebeforetheheavyrainstarted?2.Whatwastheneighborhoodlikeafterthestorm?,Reading,1.Blackcloudsweremakingtheskyverydark.Withnolightoutside,itfeltlikemidnight.2.Theneighborhoodwasinamess.,3bCompletethesentencesusinginformationfromthepassage.,1.WhenthenewsonTVwasreported,strongwinds_outside.2.WhileBensmomwasmakingsuretheradiowasworking,hisdad_.,wasputtingpiecesofwoodoverthewindows,wereblowing,3.Ben_whentheheavyrainfinallystarted.4.WhenBen_at3:00a.m.,thewind_.,washelpinghismommakedinner,fellasleep,wasdyingdown,3cDiscussthequestionswithapartner.,“Althoughthestormbrokemanythingsapart,itbroughtfamiliesandneighborsclosertogether.”Whatotherthingscanbringpeopleclosertogether?Howcanwehelpeachotherintimesofdifficulty?,Speaking,Languagepoints,此句中介词with表示一种伴随状况，同时还包含着某种因果关系，表示“因某种状况的存在而导致”,因此可翻译成“由于；因为”等。,1.Withnolightoutside,itfeltlikemidnight.,e.g.Withmyparentsaway,Imthekingofthehouse.我爸妈不在家，我可是家中的“王”了！Icantworkwithallthatnoisegoingon.由于那噪音响着，我无法工作。,1)此句中的连词while的意思是“当的时候；和同时”，while还可以表示“而；然而；但”之意，用来说明和强调两种事情或情形不同。,2.Bensdadwhilehismomwasmakingsuretheflashlightsandradiowereworking.,e.g.TomisactiveandoutgoingwhilehissisterRosaisshyandquiet.汤姆活跃外向，而他的妹妹罗莎却害羞腼腆。,2)makesure“确认，查明，核实；确保；设法保证”，其后可接句子，或接介词of及宾语，用来引入需要确认的内容。e.g.Couldyoumakesurewhattimehesarriving?你能确认一下他几点到达吗？,MakesureyouturnofftheTVbeforeyouleavethehouse.在你离开屋子前确认关闭了电视。,3)此句中的work表示机器，器官等“运作，运转”，这是动词work的一种基本用法。e.g.Mywatchiswaterproofthatmeansitwouldworkfineevenifitsinwater.我的手表是防水的这就是说即便在水里它也会正常运转。,课堂导学方案-Step3/Grammerfocus,1.以when和while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,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的动作过程中发生，从句常用进行时。如:Whilewewereswimmingsomeonestoleourclothes.Donttalksoloudwhileothersareworking.,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。,2.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.Whatwereyoudoingat10yesterdaymorning?Iwaswritingalettertomyfatheratthatmoment.,b: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：e.g.Wewerenotsleepingathome.Washefeelingwell?,3.现在分词的构成,1)一般动词在词尾加-ing,如go-going。2)以不发音字母e结尾的动词,先去掉e,再加-e-comingmake-makingwrite-writing3)以重读闭音节结尾的动词,如果末尾以一个辅音字母结尾,应先双写这个字母,再加ing，x和w结尾的除外。如:get-gettingswim-swimmingshow-showing,4)以字母y结尾的单词,直接加ing。如carrying、playing、studying。5)以字母ie结尾的动词,变ie为y,再加ing。diedyinglielying6)以元音字母加e结尾,或以e结尾,且e发音的动词,直接加-ing。see-seeingbe-being,4.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,1)过去进行时表示过去正在进行的动作,而一般过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.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.,现在进行时,含义:表示现在正在进行的动作。结构：is/am/are+doing例句：IamhavinganEnglishclass.,6.,4a.Lookatthetableandwritesentenceswithbothwhileandwhen.,课堂导学方案-Step4/4a-4c,4b.Fillintheblankswithwas,were,whenorwhile.,At7:00a.m.,Iwokeup._I_makingmybreakfast,mybrother_listeningtotheradio._Iwaseating,theradionewstalkedaboutacaraccidentnearourhome.MybrotherandIwentoutrightawaytohavealook._wegottotheplaceoftheaccident,thecar_inbadshapefromhittingatree.Butluckily,thedriver_fine.Theroads_icybecauseoftheheavysnowfromthenightbefore.,While,was,was,While,When,was,was,were,4c.WhatwereyoudoingatthesetimeslastSunday?Fillinthechart.Thenaskyo