【语法】M4U7-原因状语从句及because-of-的用法课件

原因状语从句及becauseof的用法原因状语从句及becauseof的用法状语从句主要用来修饰主句或主句的谓语。状语从句时间状语从句地点状语从句原因状语从句目的状语从句结果状语从句条件状语从句让步状语从句比较和方式状语从句Lead-in状语从句主要用来修饰主句或主句的谓语。状语从句时间状语从句地Lead-inWhywastheteacherangry?Becausethegirlwaslateforclass.Lead-inWhywastheteacherangLead-inTheteacherwasangrybecausethegirlwaslateforclass.原因状语从句主句Lead-inTheteacherwasangrybPresentation引导原因状语从句的从属连词主要的有because,as,since。原因状语从句是用来说明引起主句这个结果的原因的从句。Presentation引导原因状语从句的从属连词主要的原因Presentation指出句子的主句和原因状语从句。Irefusetobelieveyoubecausenooneelsesawthesealiens.Irefusetobelieveyouasnooneelsesawthesealiens.Irefusetobelieveyousincenooneelsesawthesealiens.主句原因状语从句Presentation指出句子的主句和原因状语从句。IrPresentationBecauseAsSincenooneelsesawthesealiens,Irefusetobelieveyou.观察一下句子，你们能得出什么结论？结论：当我们把从句放在句子开头时，经常用逗号把从句和主句隔开。PresentationBecausenooneelsePresentation知识拓展because,since,as辨析because语势最强，用来表示说话人以为听话人不知道的原因，回答why提出的问题。当原因是显而易见的或已为人们所知，就用as或since。Presentation知识拓展because,sincPresentationIdidn’tgobecauseIwasafraid.因为我害怕所以我没有去。例句Since/Astheweatheristoobad,wehavetoputoffourjourney.由于天气太差，我们不得不推迟我们的旅行。PresentationIdidn’tgobecausPracticeWe'dbetterhurry______itisgettingdark.A.andB.butC.asD.unless解析：句意：我们最好快点，因为天快黑了。

A.and并且；B.but但是；C.as由于，因为；D.unless除非。结合句意，故选C。

CPracticeWe'dbetterhurry____Practice--Hewaslateagaintoday.Doyouknowwhy?--______hestayedupwatchingfootballmatchtoolatelastnight.A.SinceB.AsC.BecauseD.AndC解析：because用来回答why的提问，表示直接的原因。根据上句的提问“Doyouknowwhy”,故选C。Practice--HewaslateagaintoPracticePoliceofficer’squestions1.WhywasTinasurethatsomethinglandedintheforestnearthehills?2.WhydidyouandTinahidebehindsomebushes?3.Whydidyourunaway?4.Whydidyourfatherrefusetobelieveyou?Matchthequestionswiththeanswers.PracticePoliceofficer’squestPracticeWeheardsomevoicesspeakingastrangelanguage.B.Sheheardaloudnoiselastnight.C.Nooneelsesawthesealiens.D.Analiensawusandmadeaterriblenoise.Tom’sanswers.Answer:1.B2.D3.A4.CPracticeWeheardsomevoicessPractice

Tinawassurethatsomethinglandedintheforestnearthehillsbecausesheheardaloudnoiselastnight.Usethequestionsandanswerstocompletethepoliceofficer’snoteswithas,sinceorbecause.TomandTinahidebehindsomebushesasAnaliensawthemandmadeaterriblenoise.1.because2.asPracticeTinawassurethaPracticeTomrunawaybecausetheyheardsomevoicesspeakingastrangelanguage.3.because4.sinceTom’sfatherrefusetobelievehimsincenooneelsesawthesealiens.PracticeTomrunawaybecausetPresentationFindouttherules.I’munhappybecauseofyourmarksintheexam.Theywenttotheforestbecauseoftheircuriosity.Tinawokeupatmidnightbecauseofaloudnoise.Shedecidedtoexploretheforestbecauseofit.Becauseof后可以加名词或者名词短语或者人称代词的宾格形式。Rules:PresentationFindouttherulesPresentationbecause引导的原因状语从句，而becauseof后加名词或者代词，或者名词短语。because从句与becauseof短语可以相互转换。because和becauseofHecan’tcomebecauseheisill.Hecan’tcomebecauseofhisillness.他因病不能来。Presentationbecause引导的原因状语从句，而Presentationbecause和so在汉语中‘因为’‘所以’一般情况是连用的，但是英语中because和so一般不能连用。因为下雨，所以我们呆在家里。正：Becauseitwasraining,westayedathome.Itwasrainingsowestayedathome.误：Becauseitwasraining,sowestayedathome.Presentationbecause和so在汉语中‘因为Practice练习巩固句子改错（画出句子中的错误部分，并改正）Becausehegotuplatethismorningsohemissedtheearlybus.2.Heisveryhappybecausehisgoodmarksintheexam.去掉because改为becauseofPractice练习巩固句子改错（画出句子中的错误部分，并改Practice直击中考【2014.深圳】—Whydidn’tyougotoschoolyesterday?—______mymotherwasinhospitalandIhadtotakecareofher.A.Then B.Because C.If

B试题分析：Then那么，然后；Because因为；If是否，如果。句意：昨天你为什么没有去上学？——因为我的母亲生病住院了，我不得不照顾她。结合语境可知选B。Practice直击中考【2014.深圳】B试题分析：ThPractice直击中考【2011.扬州】Hehadtoretire(退休)early

poorhealth.asaresult

B.because C.soD.becauseof试题分析：asaresult因此，结果是；because因为，接从句；so因此；becauseof因为，接名词性短语。句意：因为身体不适，他不得不提前退休。结合语境可知选D。DPractice直击中考【2011.扬州】HehadtoPractice直击中考【2013.苏州】KellyClarksonissopopularamongyoungpeople_____herbeautifulvoice.because B.becauseof C.instead D.insteadofB试题分析:句意：凯力.克拉克森因其动听的歌喉而深受年轻人喜爱。because因为（后接从句），becauseof因为（后接短语），instead反而，insteadof而不是……。根据语境可知其深受年轻人欢迎是因为其动听的歌喉，故选B.Practice直击中考【2013.苏州】KellyClaPractice直击中考【2012.杭州】DidyoucallSaraback?Ididn’tneedto,_____we’llhaveameetingtogethertonight.A.thoughB.unlessC.becauseD.i