牛津译林版英语9AUnit1grammar课件(共68张).pptVIP

3.表转折表明两个概念彼此有矛盾、相反或者转折,常用的连接词有but,yet,still,however等,前后分句时态一致。butThemachineisold,butitisingoodorder.这台机器虽然年头久了,但还能很好地工作。yetItisstrange,yetitistrue.虽然有些奇怪,但却是亊实。stillAlthough?we?are?very?tired,?still?we?shall?work.?虽然我们很累,但我们还将工作。howeverI’dliketogowithyou,however,myhandsarefull.我很想和你一起去,可是我忙不过来。表转折的连词but和however:e.g.(他努力工作，但以失败告终。)Heworkedhard,______hefailedatlast.Heworkedhard._________,hefailedatlast.区别:but后没有逗号，直接连接分句；however后有逗号相隔，可放句末。butHowever考点四:*although/though和but这两个关联词不能同用。考点五:(1)Althoughheisoversixty,butheworksashardasothers.(F)改为:Althoughheisoversixty,heworksashardasothers.或Heisoversixty,butheworksashardasothers.4.说明原因:说明原因,用连接词for,前后分句时态一致。forShemustbedepressed,forshefailedtheexam.她一定很沮丧，因为考试没及格。Itsgoingtorain,formykneejointsareaching.就要下雨了，因为我的膝关节酸痛。5.说明原因:表示结果,用连接词so,前后分句时态一致。so1hadaheadache,soIwenttobed.我头疼，所以上床休息了。Itrained,sothesportsmeetingwaspostponed.因为下雨，所以运动会推迟了。(2)BecauseJohnwasill,soItookhimtothedoctor.(F)此句错误。改正:Johnwasill,soItookhimtothedoctor.或:BecauseJohnwasill,Itookhimtothedoctorbecause和so等关联词都不能同时使用。考点六:用and.but或or填空。1.HisnameisPeter_____heisfromEngland.2.Pleasebequick.____youwillmissthetrain.3.Theoldmanwantstobuythiswatch,_____hedoesnthaveenoughmoney.4.Ilikeswimming______IgoswimmingeverySunday.5.Youshouldstudyhard. ____youcannotpasstheexam.即学即练1:andorbutandor即学即练2:and,or,but,so基本用法单项选择。1.Marylikesmusic___Tomisfoundofsports.A.andB.butC.bothAandB2.Ifailedagain,___Iwon’tgiveup.A.andB.butC.so3.Thisismyfirstlesson,__Idon’tknowyour