Unit5ArtworldGrammar课件牛津译林版英语九年级上册

Unit5ArtworldGrammarGivingreasonswithbecause/since/as原因状语从句SinceReadandfillintheblankswiththeright

conjunctions(连词).becauseAsBefore-learning因为既然,因为由于thinksbgreat1.WhywasTanDunchosentowritemusicfortheBeijingOlympics?2.WhydoesTanlikethesoundsofnature?3.WhyisTanabletobuildabridgebetweentheEastandtheWest?4.WhydopeoplethinkhighlyofTan’smusic?3.BecausehehassuccessfullybroughtChineseandWesternmusictogether.4.Becausehehascreatedanewtypeofmusic—musicwithoutboundaries.toaskforreasonstogivethereasonsGrammarA:Givingreasonswith“because”.TaskOne:Use“because”togivereasonsTanDunwaschosentowritemusicfortheBeijingOlympicsbecause…

(一个完整的句子)Weuse“why”toaskforreasons.Weuse“because”togivereasons.Thereason(原因)Theresult(结果)causesWeuse“because”togivedirectreasons.

直接原因because表示直接原因或理由，用于告知对方不知道的原因，其语气最强。常用来回答why开头的疑问句。A:Whyareyouwearing araincoat?B:Becauseit’sgoingtorain.Iamwearingaraincoatbecauseit’sgoingtorain.Itisgoingtorain,soIamwearingaraincoat.Attention:Weneverusetheconjunctionsoinsentenceswithbecause.√because从句与becauseof短语的转换

A:Weusebecausetointroduceclausesofdirectreason.B:Itstone(语气)is_______(strong/weak).

C:Weoftenusebecausetoanswer____(what/how/why)questions.D:We_______(never/often/sometimes)usetheconjunctionso

in

sentenceswithbecause.IdoitbecauseIlikeit.Ilikeit,soIdoit.

Discussion:RulesofbecauseExercise1.____________(因为)you,hetrieshisbesttoworkhard.2.Tonyneverspendsmoneyonbooks_________(因为)hedoesn’tlikereading.3.--______isthetrafficsobusyonthestreet?--Becausetheyarewaitingtowatchthematch.A.WhyB.WhereC.HowD.Who4.Whywashelateforschool?____hegotuptoolate.A.SinceB.BecauseC、untilD、For5._____heexerciseseveryday,______heisveryhealthy.A.Because;soB.Though;butC.Because;/D.Though;/BecauseofbecauseABcTry：

Readandchoosetherightconjunctiontofillintheblank.T:Manypeoplelikesinging.Whosingswellinyourclass?S:……T:Allofyoualreadyknowhe/shesingswell,right?S:Yes.S:

he/shesingswell,whynotsingasongforus?

A.Since/As.

B.Because

GrammarB:Givingreasonswith“since/as”.While-learningWeuse“since/as”togiveaknownreason.(已知原因)Thereasonisknowntobothortoall.

众所周知或双方已知since表示显然的或已为人所知的理由，自然的结果，常译为“因为”、“既然”，语气比because稍弱，通常置于句首。侧重主句as表示的“原因”是双方已知的事实或显而易见的原因，或者理由不是很重要，只是对主句的附带说明，含义与since相同，但语气更弱，没有since正式，常译为“由于，鉴于”。主从并重，从句说原因，主句说结果for由于，表明附加理由（解释或推断），为并列句，for分句不放于句首,且必须用逗号与前面的分句隔开。语气最弱。1.Hemustbeill,forheisabsenttoday。2.Itmusthaverainedlastnight,forthegroundiswet.WorkouttherulesA:Wealsousesinceorastointroduceclausesof______(known/unknown)reason.B:Thetone(语气)ofsince/asis(weaker/stronger)thanbecause,C:We______(can/can’t)usesinceorastoanswerwhyquestions.D:We_______(never/often/sometimes)usetheconjunctionso

in

sentenceswithsinceoras.Discussion2.Inmostcases,

canexchange.(大部分情况下)since&asRulesofsince/as1.lastvi.

持续

last(for)threedays2.breathn.

breathev.

呼吸，呼气

catch/holdone’sbreath屏住呼吸

outofbreath(气喘吁吁)takeadeepbreathoffreshair(呼吸新鲜空气)3.highly

adv.think/speakhighlyof…(对……高度评价)jumphigh跳得高high与highlyhigh用作副词，通常表示具体的高，主要修饰动词。highly副词，表示程度。TaskOne:HelpAmymakesentenceswithsinceoras.FinishPartB2GrammarB:Givingreasonswithsince/as.1.Daniel

decided

to

play

the

violin

at

the

art

festival

since/as

he

is

good

at

it.2.

Since/As

Kittywilldanceatthesonganddanceshow,shehastopractisehardthesedays.3.Sandywilldesignthepostersfortheartfestival

since/as

shecandrawverywell.

4.Since/As

somestudentslovepaintingandtakingphotos,therewillbeastudents’artshow.While-learningTrytodrawaconclusion1.Weoftenuse“because”toanswer_______questions.2.Weuse“because”tointroduceclausesofreasonwhichhas_______tone.3.We_______use“so”insentenceswithbecause.whystrongnever4.Weuse

since/astogivereasonswhicharealready_______.Theirtonesare_______

thanbecause.5.Inmostcases,_______areinterchangeable(可互换的),andweusetheminthesameway.knownweakersince\as原因状语从句

(AdverbialClauseofCause)becausesinceasfor的用法区别

HeintroducedmebecauseIwasnew.

Sinceyouaregoing,Iwillgo,too.

Asitisraining,you’dbettertakeataxi.Itmusthaverainedlastnight,forthegroundiswet.意义位置becausesinceasfor因为既然由于因为强调未知原因表示已知显然的理由常用于推断、补充解释多后置常前置常前置后置B2becauseSince/AsSince/Assince/asbecauseSince/Asbecause中考链接()1.Tonyneverspendsmoneyonbooks______hedoesn’tlikereading.A.butB.becauseC.thoughD.until()2.____everyoneishere,let’sstartourmeeting.A.SinceB.IfC.ButD.As()3._____thegirlis22,shet