《2024八年级英语下册Module4DiscoveryUnit7TheunknownworldGrammar课件牛津深圳版》由会员分享，可在线阅读，更多相关《2024八年级英语下册Module4DiscoveryUnit7TheunknownworldGrammar课件牛津深圳版（23页珍藏版）》请在金锄头文库上搜索。
1、Unit7GrammarTheunknownworld1.Asalltheseatswerefullhestoodup.2.Thecountryisnotstrongbecauseitislarge.3.Thisboydidntdohishomeworkbecauseofskating.4.Iwaslatebecauseoftheheavytraffic.5.Since/Aswevenomoney,wecantbuyit.6.Sinceeveryoneishere,letsstartthemeeting.Read and pay attention to the words in red:We
2、callthesesentencesAdverbialclausesofreason.(原因状语从句）Adverbial clauses of reason tell us why things happen.We usually use because,as and since to start adverbial clauses of reason.Adverbial clauses of reason AdverbialclauseofreasonMainclauseBecausenooneelsesawthesealiens,Irefusetobelieveyou.AsSinceWec
3、analsoputtheadverbialclauseofreasonafterthemainclause.MainclauseAdverbialclauseofreasonIrefusetobelieveyoubecausenooneelsesawthesealiens.assinceThingstorememberWhenweputtheadverbialclauseofreasonatthebeginningofthesentence,weoftenseparateitfromthemainclausewithacomma(,).语语法法讲讲解解A原因状语从句在句中表示原因、理由的从句叫
4、原因状语从句。1引导原因状语从句的从属连词主要有because,since,as。2表示语气的强弱顺序是：becausesinceas。3这些连词都不能和so连用。4当原因状语从句放于句首时，通常要用逗号与主句隔开。引导词引导词because 1because强调明确直接的因果关系，回答“why”问题。如：Shedidntcometoschoolbecauseshewasill.她没来上学是因为病了。Whywasheangry?他为什么生气？BecauseIwaslate.因为我迟到了。2because从句可与for互换，但for是并列连词，连接的是并列句，并且在for前必须有逗号隔开。如：W
5、emuststartearlybecauseitwilltakeus3hourstodrivethere.我们要早点出发，因为开车去那儿要3个小时。=Wemuststartearly,foritwilltakeus3hourstodrivethere.引导词引导词since1since表示明摆着的理由或原因，常译为“既然”。如：Sinceyouhavefinishedyourhomework,youcantakearest.既然你已完成了作业，那就休息一下吧。2since还可引导时间状语从句，表示“自从以来”。如：Weveknowneachothersincewewerechildren.我们
6、从孩提时代起就相识了。引导词引导词as1as语气最弱，表示附带说明的原因。如：Asyourebusy,youneedntgotoseehimtoday.你很忙，就没必要今天去看他了。2as还可引导时间状语从句，表示“当的时候”、“随着”。如：Hedroppedtheglassashestoodup.他站起来时，把杯子摔了。Wegetwiseraswegetold.随着年龄的增长，我们也变得聪明些了。TomaWeheardsomevoicesspeakingastrangelanguage.bSheheardaloudnoiselastnight.cNooneelsesawthesealiens
7、.dAnaliensawusandmadeaterriblenoise.Policeofficer1WhywasTinasurethatsomethinglandedintheforestnearthehills?2WhydidyouandTinahidebehindsomebushes?3Whydidyourunaway?4Whydidyourfatherrefusetobelieveyou?The police officer asked Tom some more questions about the aliens.Match the questions with the answer
8、.Then use them to complete the police officers notes with as,since or because.1（because）TombSheheardaloudnoiselastnight.Policeofficer1WhywasTinasurethatsomethinglandedintheforestnearthehills?Tinawassurethatsomethinglandedintheforestnearthehillsbecausesheheardaloudnoiselastnight.2（as）TinaandIhidbehin
9、dsomebushesasweheardsomevoicesspeakingastrangelanguage.TomaWeheardsomevoicesspeakingastrangelanguage.Policeofficer2WhydidyouandTinahidebehindsomebushes?3（Because）Becauseanaliensawusandmadeaterriblenoise,weranaway.TomdAnaliensawusandmadeaterriblenoise.Policeofficer3Whydidyourunaway?4（Since）Sincenoone
10、elsesawthesealiens,ourfatherrefusedtobelieveus.TomcNooneelsesawthesealiens.Policeofficer4Whydidyourfatherrefusetobelieveyou?Because ofRead the following sentences and find the difference.Timdidntgotoschoolyesterdaybecausehewasill.Timdidntgotoschoolyesterdaybecauseofhisillness.We can also use because
11、 of to give the reason for something.Theywenttotheforestbecauseoftheircuriosity.Tinawokeupatmidnightbecauseofaloudnoise.Shedecidedtoexploretheforestbecauseofit.Wecanuseanoun,anounphraseora(subjectpronoun/objectpronoun)afterbecauseof.Work out the ruleBbecause与becauseof的区别because和becauseof的意思都是“因为；由于”
12、。但because是连词，其后接句子。becauseof是复合介词，其后接名词、代词、动名词、what从句等。如：Shedoesntgotoschoolbecausesheisill.=Shedoesntgotoschoolbecauseofherillness.她没来上学因为她生病了。根据题目要求，完成下列句子。根据题目要求，完成下列句子。1.Thefootballmatchwasputoff.Itrained.(用because连接句子)2.Jimcouldntwalkbecausehislegwasbroken.(用becauseof改写句子)Jimcouldntwalk_.3.Many
13、peoplegiveupsmokingbecausesmokinghasharmfuleffects.(用becauseof改写句子)Manypeoplegiveupsmoking_.becauseofitsharmfuleffectsThefootballmatchwasputoffbecauseitrained./Becauseitrained,thefootballmatchwasputoff.becauseofhisbrokenlegWrite sentences about the story on page 99 by using because of.1.Tinawassurpr
14、ised/theyellowlightintheskyTinawassurprisedbecauseoftheyellowlightinthesky.2.Thealienslandedonthisplanet/anaccidentThealienslandedonthisplanetbecauseofanaccident.3.Thechildrenranawayfromtheforest/thealiensThechildrenranawayfromtheforestbecauseofthealiens.4.Theirdadwasnotsureaboutthechildrensstory/th
15、ewritingonthepieceofpaperTheirdadwasnotsureaboutthechildrensstorybecauseofthewritingonthepieceofpaper.1.Wehavelearnedhowtouseadverbialclausesofreason.2.Wehavelearnedtogivereasonswithbecauseof.一、选择最佳答案填空。一、选择最佳答案填空。()1.Icalledthepolice_theterriblenoise.A.becauseofB.becauseC.sinceD.as()2._Imverytired,
16、Iamgoingtobedearly.A.UntilB.AsC.ThoughD.While()3._nooneknowsthetruth,wedontbelievewhathesaid.A.WhetherB.WhenC.WhileD.Since()4.Webelievetherearealiens_thesephotosofUFOs.A.sinceB.becauseC.asD.becauseofDABD（二）句型转换。1Thestudentsdidntneedtogotoschoolbecausetherewasastorm.Thestudentsdidntneedtogotoschool_thestorm.2Hewasill,sohedidntgotoschool._hewasill,hedidntgotoschool.3Hecouldntwalkbecausehislegwasbroken.Hecouldntwalk_his_leg.4Icamebackbecauseitwasrainingheavily.Icameback_the_rain.5Myparentswereangry
