高考英语一轮复习 ： 英语最全连词知识梳理连词是一种在句子与句子之间，短语之间以及名词等其他词语之间起连接作用的虚词，它不能单独作句子的成份。按其意义可分为并列连词和从属连词两大类。并列连词连接的双方是对等的。常有的并列连词有and, bothand, eitheror, neithernor， not onlybut also, as well as等。但如果连接的两部分意义不趋向一致，意义有转折的并列连词有：but, however, yet, still，while等。Mary was a nice girl, but she had one shortcoming.Tomgot up early, yet he failed to catch the train.He was very tired, still he kept on walking.Your composition is fairly good, however, there is still someroom for improvement.Jane is hard working ,while her sister is quite lazy.还有表示选择关系的并列连词，如：or, or else, otherwise 再有的是连接双方，互为因果，或表示前因后果的连词有：for, so, therefore (因此)，then等。从属连词在中学范围内常常用来连接名词性从句，如：that, if, whether, 其次用来连接状语从句。其中有原因状语从句，常用的连接词有：when , while, as, since, before, after, once, as soon as, until, till。连接条件状语的连词有：if, unless, as long as 等，而原因状语的连接词有because, since, as, now that (既然)。目的、结果、方式、比较、地点等状语从句的连接词有：so that, sothat, suchthat, asas, than, where 它们在句子与文章中几乎无处不见。简单连词并列连词用法例句and表并列或顺承关系He came into the classroom and put his schoolbag on the desk.用于“祈使句，and +陈述句”结构Be careful, and you will make fewer mistakes.or意为“或者”，表示任选其一Do you want to go the zoo or the museum?意为“否则”，用于“祈使句，or +陈述句”结构Please be quick, or we will miss the last bus.so表示因果关系Its raining heavily now, so we have to put off the P.E class.for表示原因，及附带理由I must be off now, for it is getting late.but“但是”，表转折关系Nearly every kid hates exams, but theyre necessary. They help to check if kids have learned the specific knowledge.并列连词短语连词短语意义用法例句neither-nor-既不-也不,谓语动词的数遵循“就近原则”Neither he nor his children like fish.either-or-或者-或者-，谓语动词的数遵循“就近原则”Either you or he is wrong.both-and-两者都，谓语动词用复数形式Both she and I are good at English.not only- but also不但-而且-，谓语动词的数遵循“就近原则”Not only you but also he wants to buy the book.注意：neither.nor, either.or, not only.but also连接两个成分作主语时，谓语动词要和最近的主语保持一致，即就近原则；both.and连接两个成分作主语时，谓语动词只能用复数。1.引导时间状语从句的从属连词从属连词用法例句when当-时候引导的从句中，谓语动词可以是短暂性动词也可以是延续性动词It was raining when he came out of the office.while当-时候引导的从句中，谓语动词必须是延续性动词，且常用进行时Dont make any noise while others are reading in the library.before在-之前“在之前”，从句的动作通常发生在主句动作之后She reached the train station before he called her yesterday.after在-之后“在之后”，从句的动作通常发生在主句动作之前He turned off the light and went to bed after he cleaned the room.until常用在“not.until.”结构中，表示“直到才”Nancy didnt appear until it was ten oclock last night.as一边-一边表示一件事情在发生，另一件事情也在同时发生The students took notes as they listened to the radio in English class.as soon as一-就-表示从句的动作一发生，主句的动作就随之发生Ill write a letter to you as soon as I get to America.since自从从句常用一般过去时，主句用现在完成时The girl who can speak English smoothly has lived in London since she was five years old.once一旦表示从句动作一发生，主句的动作就随之发生Once they find people in trouble, they are eager to help them without payment.2.引导条件状语从句的从属连词连词用法例句if如果主句用一般现在时，主句通常用一般将来时，即主将从现，但有时用主情从现或主祈从现。1.If he has time tomorrow, he will come to the meeting.2.None can succeed if he doesnt work hard.unless除非，如果不主句用一般现在时，主句通常用一般将来时，即主将从现，但有时用主情从现或主祈从现。unless可转化成if-not结构。1.He wont finish the work unless he works hard.2.If it doesnt rain, go for a picnic.as long as只要主句用一般现在时，主句通常用一般将来时，即主将从现。You can take any book as long as you like.3.引导让步状语从句的从属连词连词含义用法though虽然引导让步状语从句时，这些词不能与but连用。although尽管even though(if)即使4. 引导原因状语从句连词意义例句because表示造成某种情况的直接原因，语气最强，常用来回答由why引导的问句，其从句的位置通常在主句的后面。He has to leave because it is too late.因为太晚了，他不得不走。sincesince语气比as稍强，不表示直接的或根本的原因，而是一种已知的或非常显然的理由，since引导的从句通常位于主句之前。Since everyone is here, lets start.既然大家到齐了，我们就出发吧！asas是从属连词，表示原因时，语气最弱，所说的原因比较明显或是已知的事实，它引导的从句一般位于主句之前。We all like her as she is kind.我们都喜欢她，因为她善良。for是并列连词,表明附加或推断的理由,常用于口语中,意为“因为”。for连接的句子不用于句首,并列句之间可以用逗号分开。Imustbeawayforaweek,forIllgotoShanghai.我要离开一个星期,因为我要去上海。5.引导方式状语从句的从属连词连词意义例句as按照-方式She always does as her father tells her.as if似乎，好像He walked around as if he was looking for something.6.引导结果状语从句的从属连词连词意义用法及例句so -that如此-以至于so后跟形容词副词原形。(so-that-结构常与too-to结构转化）。She was so tired that she couldnt go any farther.ThatquestionissodifficultthatIcantworkitout.Thatquestionistoodifficultformetoworkout.这个问题太难,我算不出来。such -thatsuch后跟名词或名词性词组。Its such a fine day that many people go to the park for fun.so.that.可以与以下结构转换：A. 与too.to.结构的转换too.to.意为“太以至于不能”,与so.that.结构互换时,that从句中必须使用情态动词cant(如果是过去时则用couldnt)。如:Hewassocleverthathecouldntmakesuchstupidmistakes. Hewastooclevertomakesuchstupidmistakes.他太聪明了,不会犯这么愚蠢的错误。温馨提示:如果主从句的主语不一致,改为同义句时,要用too.for sb. to.结构。如:ThatquestionissodifficultthatIcantworkitout.Thatquestionistoodifficul