九年级英语语法专题复习--连词 6页

九年级语法专题连词语法讲解I.连词的功能用来连接词、短语、从句或句子的词叫连词。连词是一种虚词，在句中不能单独使用。连词可分为两类：并列连词和从属连词。II.常见连词类型1•并列连词并列连词用来连接具有并列关系的词、短语或句子。常见的并列连词有：⑴表并列关系的and,both...and,notonly...butalso,neither...nor等。(2)表选择关系的or,either...or等。(3)表转折关系的but,while等。(4)表因果关系的for,so等。2•从属连词从展连词用来引导从句。常见的从展连词有：(1)引导时间状语从句的after,before,when,while,as,until,till,since,assoonas等。(2)引导条件状语从句的if,unless等。(3)引导原因状语从句的because,as,since等。(4)引导目的状语从句的sothat,inorderthat等。(5)引导让步状语从句的though,although,evenif等。(6)引导结果状语从句的sothat,so...that,such...that等。(7)引导比较状语从句的than,as...as等。(8)引导名词从句的that,if,whether等。III.常用连词的用法辨析1・while,when,as这三个连词都可引导时间状语从句，但用法有所不同。1)当某事正在进行的时候，又发生了另一件事。while,when,as都可用来引导表示“背景”的时间状语从句。例如：As/When/WhileIwaswalkingdownthestreetInoticedapolicecai;2）当两个长动作同时进行的时候，最常用的是while。例如：WhileMotherwascookinglunch,Iwasdoingmyhomework.3）当两个动作都表示发展变化的情况时，最常用的是as。例如：Aschildrengetolder,theybecomemoreandmoreinterestedinthingsaroundthem.4)当两个短动作同时发生时，或表示“一边……一边”时,常用as。例如:Justashecaughtthefly,hegavealoudcry.Shelookedbehindfromtimetotimeasshewent5）当从句的动作先于主句的动作时，通常用wheno例如：Whenhefinishedhiswork,hetookashortrest.6）当从句的谓语是瞬间动作，主句的谓语是延续性动作时，通常用wheno例如: WhenJohnamvedIwascookinglunch.2.as,because，since,for这四个词都可表原因，但用法有区别。1）如果原因构成句子的最主要部分，一般用becauseo因此，because引导的从句往往放在句末。例如：Istayedathomebecauseitrained.…Whyaren"tyougoing?…BecauseIdorftwantto.2）如果原因己被人们所知，或不如句子的其它部分重要，就用as或sinceoSince比as稍微正式一点。as和since引导的从句一般放在句子的开头。例如：Ashewasn"tready,weleftwithouthim.SinceIhavenomoney,Ican"tbuyanyfood・3）foi•用来补充说明一种理由，因此，for表示的原因几乎可以放在括号里。for引起的句子不放在句子的开头。例如：Idecidedtostopandhavelunch—forIwasfeelingquitehungry・3.if,whetherif和whether都可作“是否”讲，在引导宾语从句时一般可互换。例如：Iwonderwhether/ifyoustillstudyinthatschool.Idon"tknowwhether/ifhelikesthatfilm.在下列情况下，只能用whether,不能用if：1）引导主语从句时。例如：Whetherhewillcometothepartyisunknown.2）引导表语从句时。例如：ThequestioniswhetherIcanpasstheexam・3）在不定式前。例如：Ihaven"tmadeupmymindwhethertogothereornot.4.so…that，such“・that1）so...that中的so是个副词，其后只能跟形容词或副词，而such...that中的such是个形容词，后接名词或名词短语。例如：FmsotiredthatIcaiftwalkanyfarther.Itwassuchawarmdaythathewentswimming.2）如果在名词之前有many,much,little,few时，用so,不用sucho例如:Hehassolittleeducationthatheisunabletogetajob.IhavehadsomanyfallsthatIamblackandblueallove匚5.either-.or...,neither^.nor,notonly.・.biitalso...这三个连词词组都可连接两个并列成分。当它们连接两个并列主语时，谓语动词要随相邻的主语变化。例如：Eitheryouorheiswrong.Neitherhenorhischildrenlikefish.Notonlytheteacherbutalsothestudentswanttobuythebook. 6・although,but这两个连词不能用在同一个句子中。例如：我们不能说Althoughheisoversixty,butheworksashardasothers. 这个句子应改为：Althoughheisoversixty,heworksashardasothers.或Heisoversixty,butheworksashardasothers.7.because,so这两个连词同样不能用在同一个句子中。例如：我们不能说BecauseJohnwasill,soItookhimtothedoctor这个句子应改为：BecauseJohnwasill,Itookhimtothedoctor或Johnwasill,soItookhimtothedocton连词参考答案：I-5ACABD6-10AAAAAII-15BBCDD16-20BDBDD 连词同步练习单项选择1.MeHuangdecidedtobuythatCDplayeritwasexpensive.A.eventhoughtB.sothatC.becauseD.asif2.一YousawthefilmHarryPotterlastnight,didn9tyou?一Yes,Imissedthebeginning.A.andB.soC.butD.then3-You511domuchbetteryou"remorecarefulwithyourspelling.A.ifB.unlessC.althoughD.unless4.MeSmithhasmadelotsoffriendshecametoGansu.A.assoonasB.sinceC.whenD.before5.一DidtheforeignershaveanyproblemstalkingwithChineseinBeiijngin2008?一IdorTtthinkso.theyoungtheoldwereabletospeakEnglish.A.only,exceptB.either,orC.neither,norD.both,and6.Afterclimbing,IwastiredIcouldhardlywalk.A.so,thatB.such,thatC.as,asD.too,to7.There"snoneedtotakeataxiiFsonlyfiveminutes"walkfromhere.A.sinceB.whileC.thoughD.until8.一Isthisarticledifficulttounderstand?一Yes,itisiftlongandtherearen^tanynewwordsinit.A.thoughB.soC.becauseD.while9-一Whenareyougoingontheschooltrip?—todayortomorrow.We"llbefreethesedays.A.EitherB.NoneC.BothD.Neither10.Thestudentshavemanyexercisesthattheycarftfinishintime.A.so,themB.so,itC・such,themD.such,it11・Thisexerciseisdifficult・A.so,thatfewofuscandoB.so,thatfewofuscandoitC・So,foranyoneofustodoD.too,foranyoneofustodoit12.Wedidn"tcatchthetrainweleftlate>A.soB.becauseC.butD.though13.Tomfailedintheexamagainhewantedtopassitverymuch. A.ifB.soC・thoughD.as14.1won%believethatthefive-year-oldboycanreadfivethousandwordsIhavetestedhimmyselfA.afterB.whenC.ifD.until15.Thebookwassointerestingthathehadreaditforthreehoursherealizedit.A.whenB.untilC.afterD.before16.-一Thisdresswaslastyear"sstyle.-一Ithinkitstilllooksperfectithasgoneoutthisyea匚A.sothatB.eventhoughC.asifD.eversince17.Hurryup,youwillmissthetrain.A.andB.soC.howeverD・ot18.Themountainwassteepfewpeopleinourcityreachedthetop.A.so-e.asB.so...thatC.as...asD.too...to19.…DoyourememberourpleasantjourneytoXi，an?…Ofcourse.Iremembereverythingithappenedyesterday.A.assoonasB.eventhoughC.ratherthanD.asif20.youcaiftanswerthisquestion,wehavetoasksomeoneelseforhelp.A.AlthoughB.WhileC.WhetherD.Since