小学语法：连词

连词Whichdoyoulike,footballorbasketball?Basketball,butI'mnotgoodatit.什么是连词？•连词是连接单词、短语或句子的一种词。2.常见连词的基本用法•and(和）表示并列和对称•Theybegantosinganddance.•Ilikebaskerball,footballandtabletennis.•both...and...（两者都...)•Bothyouandmearestudents.notonly...butalso不但......而且，表并列•Jennycanplaynotonlybasketballbutalsovelleyball.•NotonlyyoubutalsoJimoftencomeslate.Neither...nor...（既不......也不......）•Neitheryounorheislateforclass.•NeitheryounorIamright.后面的谓语动词遵循就近原则。or或者，还是，表示选择•Isitapigoradog?•Doyoucometoschoolbybusorbybike?•Areyouhappyorsad?注意：在并列结构中，or通常用于否定句，and用于肯定句。•Idon'tlikecoffeetea.•Ilikecoffeetea.orandeither...or...或者.....或者......，不是......就是......表示选择•EitheryouorIhavetodothehousework.•Youmayeitherstayhereorgowithus.•IwillgotoNanningeitherMondayorTuesday.but但是，表示转折•Ilikewinter,butIdon'tlikesnow.•Marylikesapples,buthersisterlikesbananas.•Iliketheskirt,butit'stooexpensive.for因为...表示原因•Heisabsenttoday,forheisill.•Idrankalotofwater,forIwasthirsty.•Westayathome,forit'srainingoutside.so因此，所以表示原因•Hegotuplate,sohemissedthebus.•Igotmanygifts,soIwasveryhappy.because因为表示原因•Johndidn'tcometoschoolyesterdaybecausehewasill.•Ididn'thavedinnerbecauseIwasn'thungry.because和so不能同时出现在句子中when当......的时候表示时间•Pleasecomeandplaywithmewhenyouarefree.•WhenmyMumcamebackhome,IwaswatchingTV.•WhenIwasfive,Icouldswim.after在......之后表示事情发生的先后•I'llgoswimmingwithyouafterIfinishmyhomework.•Thepigsleptafterdinner.•Before在......之前与after构成反义词•YoumustfinishyourhomeworkbeforeyouwatchTV.assoonas一......就......表示时间•IwillcallyouassoonasIgethome.•IwilleatanicecreamassoonasIgethome.•Mymotherwenttosleepassoonasshecameback.if如果表示条件•Wewillgotothezooifitdoesn'traintomorrow.•Youwillfailtheexameifyoudon'tstudyhard.•IfIfinishmyhomework,Iwillgotothecinema.although/though尽管/虽然......表示让步•Sheeatanappleadaythoughshedoesn'tlikeit.•Althoughsheworkedhard,shelostthegame.