1连词在句子中起连接作用,可以使词、短语或句子连接起来形成一定关系的词。一、连词的用法并列连词(1)and:“和,并且”表示并列(2)both...and:“两者都......”表示连接(3)or:“或者,还是”表示选择,“否则”(4)but:“但是”表示转折(5)so:“所以”表示结果从属连词(1)because:“因为”,表示原因,提问时用why(2)when:“当......时候”,引导时间状语从句一.用适当的连词完成下列句子1.Ihelpher______shehelpsme.2.Youcanwatchit,_______youcan’ttouchit.3.Whichisbigger,thisone_________thatone?4.Bothmyfather________mymotheraredoctors.5.---Whyareyoulatetoday?---________Ican’tcatchthebus.6.Lilyisill,_______shedoesn’tgotoschool.二.单项选择1.Shestoodup________wentout.A.andB.orC.soD.but2.Whoisright,Jacky________John?A.andB.butC.soD.or3.Heisclever,________heislazy.A.butB.andC.soD.or4.Itisrainingoutside,_______Ihavetostayathome.A.soB.andC.butD.or5.Ihelphim______hehelpsme.Wehelpeachother.A.butB.andC.orD.so6.Jackwasveryhungry______heateallthecakes.A.andB.butC.soD.or7.Hurryup,______we’llbelatefortheconcert.A.andB.butC.soD.or8.Hegotuplatethismorning,______hewaslateforschool.A.soB.butC.whileD.yet9.Hehasnobrothers_______sisters.A.andB.butC.orD.so小贴士1.在并列结构中,and通常用于肯定句,or则用于否定疑问句。2.在英语中,because与so不能连用,二者只用其一。