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Conjunctions小学生英语语法一.连词的概念1.在句子中用来连接词与词、短语与短语或句子与句子的词。2.连词在句子中不能单独作句子成分，只能起连接作用，如：1）IstudyEnglishandChinese.2）Doesheworkatschoolorinthehospital?3）Igetupearly,butmybrothergetsuplate.4）Iamverybusybuthappy.（我很忙但我很快乐）二.连词的分类1.并列连词连接的单词、短语或句子具有对等关系，就是具有相同的词性、相同的结构和形态。and（和）,but（但是），or（或者）,for（因为）,so（所以）…both…and…（…和…都…）,either…or…（不是…就是…）notonly…butalso…（不仅…而且…）。如：1）Iateahamburger,butI’mnotfullyet.2）let’sgoandplayfootball.3）Icleanedthehouseandwashedclothesthismorning.4）Areyougoingtotravelbytrainorbyair?5）NotonlyJanebutalsoherparentslikecooking.2.从属连词：用来连接主句和从句。before（…之前）,after（…之后）,when（当…时候）because（因为）if（如果）assoonas（一…就…）though（尽管）,although（尽管）如：1）Shedidn’tgotoschoolbecauseshewasill.2）Ifoundherbagaftershehasleft.（她走了以后，我发现了她的书包）3）Hestudiedhardthoughhehadafever.4）Iwaspaintingthewallwhenhecalledme.（他给我打电话时，我正在刷墙）5）Ifyougettickets,pleaseletmeknow.（如果您买到票，请告诉我）根据连词在句子中表示逻辑关系的不同，也可分为以下四类：1)表示因果关系的：because,for,so（所以）,since（既然）2)表示平行并列、选择关系的：and（和）or（…或…）either…or…（不是…就是…）neither…nor…（既不…也不…）both…and…（…和…都…）notonly…butalso（不仅…而且…）3)表示时间关系的：after,before,when，assoonas4）其它常用连词：表示条件关系的：if表示让步的：although/though（尽管）三.常见连词的用法1.用“and”连接多个对象时，最后两个对象间用“and”连接，前面的其它对象间用逗号。Bobenteredtheroom,tookoffthecoatandsatdowninthesofa.2.and通常用在肯定句中，而or通常用在否定句和疑问句中,。1）Helikesmilkandjuice.2）Hedoesn’tlikemilkorjuice.（在否定句中表示并列）3）Whichdoyoulikebetter,applesorpears?（在疑问句中表示选择）3.在同一个句子中，不能同时出现because和so。如：BecauseJohnwasill,soItookhimtothedoctor.应改为：Johnwasill,soItookhimtothedoctor.或：ItookhimtothedoctorbecauseJohnwasill4.though/although不能和but和连用。如：Althoughheisoversixty,butheworksashardasothers.改为：Althoughheisoversixty,heworksashardasothers.或：Heisoversixty,butheworksashardasothers.5.“both…and…”（…和…都…/两者…都…）“notonly…butolso…”（不仅…而且…）意思相近，有时可以通用如：BothyouandhespeaksFrench.（你和他都讲法语）NotonlyyoubutalsohespeaksFrench.（不但你而且他也讲法语）6.neither…nor…本身已经表示两者都否定，所以句子不再用否定式。NeithershenorIareinterestedinicecream.（她和我都不喜欢冰淇淋）7.eitherAorB（或者A或者B）neitherAnorB（既不A也不B）notonlyAbutalsoB（不仅A而且B）①EitheryouorIamgoingtotheparty.(或者你或者我将去晚会)②NeitherInorhehasseenthemovie.（我和他都没有看过这部电影）③NotonlyyoubutalsohespeaksFrench.（不但你而且他也讲法语）【连接主语时，谓语“就近原则”】8.and和or都可以在祈使句中使用.“and+句子”通常是比较好的结果，意思是“…那么就会”“or+句子”则表示不愉快不理想的结果，意思是“…否则就会”如：Studyhard,andyourmathwillbebetter.（努力学习，那么你的数学成绩将会很好）Studyhard,oryourmathwillbeworse.（努力学习，否则你的数学成绩将会很差）1.请用括号里的连词连接下列句子1）Heisrich.Heisunhappy.(but).2）Hebrokehisleftleg.Hecouldn’tattendthemeetingyesterday.(because).3）Bobenteredtheroom.Bobtookoffthecoat.Bobsatdowninthesofa.(and).4）Iamwrong.Youarewrong.(neither…nor).5）Itwillbefinetomorrow.I’llvisitmyEnglishteacher.(if)HeisrichbutheisunhappyHecouldn’tattendthemeetingyesterday,Becausehebrokehisleftleg.Bobenteredtheroom,tookoffthecoatandsatdowninthesofa.NeitheryounorIamright.I’llvisitmyEnglishteacherifitisfinetomorrow.6）Ilikewhiteboots.Mysisterwhiteboots.(both…and…).7）Iwon’tbuyakite.Iwon’tbuyaballoon.(or).BothmysisterandIlikewhiteboots.Iwon’tbuyakiteoraballoon.2.选择填空1）Wemadeapizzathismorning.___wedidn’teatit.A.andB.soC.butD.or2）Iwastiredverymuch,__Iwenttobedearlylastnight.A.becauseB.soC.butD.or3）DoesRosegotoschoolbybike__bybus?A.andB.orC.butD.norCBB4）HewillgotoParis___hisauntlivesthere.A.andB.soC.but.D.because5）I’llcallyou__Iarriveattheairport.A.andB.butC.assoonasD.if6）JerryIareinterestedinthemovie.Couldyougivemeonemoreticket?A.Both,andB.Either,orC.Neither,norD./,or7）_____it’sraining,thematchcontinues.A.ForB.WhenC.AlthoughD.Because8）Turnoffthelights__yougoout.A.ifB.thoughC.afterD.beforeDCACD9）Marylikesmusic___Tomisfoundofsports.A.andB.butC.bothAandB10）Thisismyfirstlesson,__Idon’tknowyournames.A.andB.butC.so11）Whichdoyoulikebetter,apples__pears?A.andB.butC.or12）Nowwehavenotime_____money.A.soB.andC.or13）It’sgettingwarmer__warmer.A.andB.butC.orCCCCA3.找出下列句中的错误，并予以订正。1）Becausehewashungry,soheatetwobowlsofrice...2）Whichdoyoulikebetter,singinganddancing?..3）Aliceisnotslimbutalsobeautiful..4）BothMomandalsoDadareangrywithmybrother..5）Thoughsheislittle,butsheoftenhelpsothers..Hewashungry,soheatetwobowlsofrice.Becausehewashungry,heatetwobowlsofrice.Whichdoyoulikebetter,singingordancing?.Aliceisnotonlyslimbutalsobeautiful.BothMomandDadareangrywithmybrother.Thoughsheislittle,sheoftenhelpsothers.Thankyou!Goodbye!