八年级下册英语牛津深圳版Module 4 Unit7 The unknown world Period 3 Grammar 课件

牛津深圳版八年级下册

Unit7Theunknownworld

Period3GrammarReviewWordsreviewtentn.desertn.ReviewWordsreviewknifen.landingsiten.LeadinReadandpayattentiontothewordsinredparts:1.Heisabsenttodaybecausehewasill.2.Sincenooneelsesawthesealiens,Irefusetobelieveyou.3.Itlooksstrangeashelookedattheword“EARTH”.Adverbialclausesofreason原因状语从句PresentationAdverbialclausesofreasontelluswhythingshappen.Weusuallyusebecause,asand

sincetostartadverbialclausesofreason.

表示原因的状语从句一、定义：二、引导词：because,since,as等。Adverbialclausesofreason原因状语从句PresentationAdverbialclauseofreasonMainclauseBecausenooneelsesawthesealiens,Irefusetobelieveyou.AsSince三、because,as与since三者的区别：PresentationWecanalsoputtheadverbialclauseofreasonafterthemainclause.MainclauseAdverbialclauseofreasonIrefusetobelieveyoubecausenooneelsesawthesealiens.assince引导的从句既可以位于主句的前面，也可以位于主句的后面。★注意：

从句位于主句前面时，要用逗号与后面的主句分开。ThingstorememberWhenweputtheadverbialclauseofreasonatthebeginningofthesentence,weoftenseparateitfromthemainclausewithacomma(,).Presentation如：Wehadtostayathomebecauseitwasraining.=Becauseitwasraining,wehadtostayathome.PresentationTrytorewritethesentences.(1)Ididn’tgobecauseIwasafraid.=Because

.(2)Youdon’thavetoseehimtodayasyouaretoobusy.=As

.(3)Sinceyouhavefinishedyourwork,youcanhavearest.=

since

.Iwasafraid，Ididn’tgoyouaretoobusy,youdon’thavetoseehimtodayYoucanhavearestyouhavefinishedyourworkPresentation（1）because

表示直接原因，语气最强,

着重点在从句，它所指的原因通常是听话人所不知道的，。常用来回答why的提问。如：

Hedidn’tcometoschoolbecausehewasill.因为他生病了，所以没来上学。-Whycan’tIgo?-Becauseyouaretooyoung.-为什么我不可以去？-因为你还太小了。Presentation

侧重主句，语气次于because，常表示稍加分析便能得出来的原因，或人们已知的事实，意为“既然，因为”，常置于句首。如：Sinceyoucan’tanswerthequestion,I’llasksomeoneelse.既然你能回答这个问题，我去问问别人。（2）since（3）asPresentation

as引导的原因状语从句语气最弱，它所表示的原因只是附带说明的“双方已知的原因”，常译为“由于；鉴于”。可谓语句首或句末。如：Asitisraining,weshallnotgotothezoo.由于下雨了，我们不应该去动物园。Let'sdoFillintheblankswithas,becauseorsince:1._________youdonotunderstand,Iwillexplainagain.2.________shewaslateforschool,shehadtosaysorry..3.__________hewasill,hedidn’tgotoschool.SinceAsBecause解析：考查原因状语从句连接词。1.2表示原因，语气较弱，1表示“既然”选用since，2表示“众所周知”的理由选用as；3表示直接原因，选用Because。Let'sdoThepoliceofficeraskedTomsomemorequestionsaboutthealiens.Matchthequestionswiththeanswer.Thenusethemtocompletethepoliceofficer'snoteswithas,sinceorbecause.1WhywasTinasurethatsomethinglandedintheforestnearthehills?2WhydidyouandTinahidebehindsomebushes?3Whydidyourunaway?4Whydidyourfatherrefusetobelieveyou?aWeheardsomevoicesspeakingastrangelanguage.bSheheardaloudnoiselastnight.cNooneelsesawthesealiens.dAnaliensawusandmadeaterriblenoise.bdacLet'sdoTombSheheardaloudnoiselastnight.Policeofficer1WhywasTinasurethatsomethinglandedintheforestnearthehills?1（because）Tinawassurethatsomethinglandedintheforestnearthehillsbecausesheheardaloudnoiselastnight.Let'sdoLet'sdo2（as）TinaandIhidbehindsomebushesasweheardsomevoicesspeakingastrangelanguage.TomaWeheardsomevoicesspeakingastrangelanguage.Policeofficer2WhydidyouandTinahidebehindsomebushes?Let'sdo3（Because）Becauseanaliensawusandmadeaterriblenoise,weranaway.TomdAnaliensawusandmadeaterriblenoise.Policeofficer3Whydidyourunaway?Let'sdo4（Since）Sincenooneelsesawthesealiens,ourfatherrefusedtobelieveus.TomcNooneelsesawthesealiens.Policeofficer4Whydidyourfatherrefusetobelieveyou?Presentationbecause和becauseof的区别

如：

Ididn’tbuyitbecauseitwastooexpensive.Heisherebecauseofyou(that).

Theydidn’tgotothemuseumbecauseitrained.Theydidn’tgotothemuseumbecauseoftherain.

because是连词，后面接句子，构成表示原因的语从句；

becauseof是短语介词，后面接名词、名词性短语或动词-ing形在句子常用作状语。PresentationLookandsay:A:Whyareyoulate?B:I’mlatebecauseof_________________.I’mlatebecause_________________.theheavytrafficthetrafficisheavyPresentationLookandsay:A:Whydidyounotgotoworkyesterday,Lily?B:Ididn’tgotoworkbecauseof___________.Ididn’tgotoworkbecause_________________.myillnessIwasillLookandsay:PresentationA:Whywastherenoelectricitythismorning?B:Therewasnoelectricitythismorningbecauseof_________________________lastnight./because___________________________lastnight.theheavystormthestormisveryheavyWecanalsousebecauseoftogivethereasonforsomething.PresentationbecauseofPresentationTheywenttotheforestbecauseoftheircuriosity.Tinawokeupatmidnightbecauseofaloudnoise.Shedecidedtoexploretheforestbecauseofit.WorkouttheruleWecanuseanoun,anounphraseora(subjectpronoun/objectpronoun)afterbecauseof.Let'sdo1.Herealizedshewascrying_____whathehadsaid.

a.becauseb.becauseof2.Ididn’tbuyit______itwastooexpensive.a.becauseb.becauseof3.Helosthisjob______hisage.a.becauseb.becauseof4.Hedidn’tcome______hewasill.a.becauseb.becauseofbabaChoosethecorrectanswer:Let'sdoWritesentencesaboutthestoryonpage99byusingbecauseof.1Tinawassurprised/theyellowlightinthesky2Thealienlandedonthisplanet/anaccidentTinawassurprisedbecauseoftheyellowlightinthesky.Thealienslandedonthisplanetbecauseofanaccident.Let'sdo3Thechildrenranawayfromtheforest/thealiens4Theirdadwasnotsureaboutthechildren'sstory/thewritingonthepieceofpaperThechildrenranawayfromtheforestbecauseofthealiens.Theirdadwasnotsureaboutthechildren’sstorybecauseofthewritingonthepieceofpaper.GroupworkPairwork.Watchthevideoandroleplay.GroupworkVicki：Jennifier，yougotsomanystamps.Jennifier：Yes.Ilikecollectingstampsbecausetheyareinteresting.Vicki：Isee.Sincetheyareaboutdifferentcountries,youmustliketravellingalot.Jennifier：Youareright.Itismydreamtotravelaroundtheworld.Vicki：That’sgreat.Oh,look.It’srainingoutside!Jennifier：Yeah.Asit’sraining,let’sordersomefoodandeatinside.Vicki：Goodidea.SummaryAdverbialclausesofreason原因状语从句1.定义：表示原因的状语从句。2.引导词：because,since,as等。3.because,as与since三者的区别。4.because和becauseof的区别。ExerciseFillintheblankswithbecause,as,sinceorbecauseof.1.Marydidn’tgo