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连词【定义】连词是连接单词、短语或句子的一种虚词，起辅助作用，在句子中不单独作成分根据在句子中所起的作用不同，连词通常分为并列连词和从属连词并列连词用来连接属于同一层次并具有同等句法功能的词、短语或句子；而从属连词用来连接不同层次，带有主从关系的词、短语或句子【知识归纳】
一、并列连词【特例清单】.“祈使句+or+结果句=Ifyoudont其中or意为“否则”例Hurryuporyouwillbelate.快点否则你就会迟到了！=Ifyouhurryupyouwon，tbelate.如果快点，你就不会迟到了=Ifyoudoifthurryupyouwillbelate.如果不快点你就会迟到了but“但是”，用来表示转折关系，注意它不能与thoughalthough连用so“所以因此”用来表示因果关系注意它不能与becausesinceas连用for“因为”，表示原因，主要用来进行补充说明，没有因果关系notonly...butalsoneither…nor…和either...or...连接两个主语时，谓语动词与最近的主语保持一致；both.・・and…连接两个主语时，谓语动词要用复数形式；而aswellas连接两个主语时，谓语动词同前面的主语在人称和数上要保持一致例NotonlyIbutalsomymotherisgoingtothemuseum.不仅我而且我的母亲也要去博物馆NeitheryounorIamright.你和我都不对Eitheryouorheisright.要么你对要么他对BothLiPingandherfathertakeexerciseeverymorning.李萍和她的父亲每天早晨都进行锻炼
二、从属连词【特例清单】.if意为“是否”时，引导宾语从句；意为“如果”时，引导条件状语从句例Couldyoutellmeifthey41cometomorrow你能告诉我他们明天会来吗？Youcangoouttoplayifyourhomeworkisfinished.如果你的作业做完了，你就可以出去玩了.从属连词so…that…和such…that…都表示“如此以至于”但用法不同so…that…结构中的so为副词，后面跟形容词或副词；such...that…中的such为形容词，后面接名词（名词前可以有形容词或副词修饰）彳列Hewassuchacleverboythathethoughtoutaverygoodidea.=Hewassocleveraboythathethoughtoutaverygoodidea.这个男孩很聪明，想出了一个非常好的办法并列连词词义例句and和，又，及Heislaughingandtalking.but但是，可是（表转折）Heispoorbuthonest.or或者（表选择）Wouldyouliketeaorcoffeeso因此，所以（表结果）Hewasillsohecouldntgotoschoolyesterday.both...and...两者都Bothyouandsheareright.notonly...不但Notonlyyoubutalsoeveryoneherelikeswatchingbutalso...而且……footballmatch.either...or...或者或者EitherheorIamright.neither...nor...既不……也不……NeitherthetwinsnorLiLeihasbeentoShanghai.分类连词词义例句表示时间when当…时Thestudentsweretalkingwhentheteachercamein.while当…时IwasdoingmyhomeworkwhilemyfatherwaswatchingTV.after在・・•之后rilgotoplayfootballafterIfinishmyhomework.before在…之前Pleaseturnoffthelightbeforeyouleavetheroom.tilluntil直到…为止rilwaittill/untilhearrives.不到…不Shewontgethometill/untilitgetsdark.assoonas一…就UlicallyouassoonasIgettoBeijing.since自从…Hehaslivedheresince
1980.表示条件if如果Wellgoforapicnicifitdoesntrain.unless除非，如果不TheywillhaveapicnicunlessitrainsnextSunday.表示原因because因为Hedidntcomebecausehewasill.since既然Sincewehavegotreadyforitletssetoff.as因为AsImnotathomepleaseleaveamessage.表示目的sothat以便于Hegotupearlysothathecouldgetthereintime.inorderthat为了Heworkshardinorderthathecangotoagoodcollege.表示结果so...that如此…以至于…Theboxissoheavythatwecantcarryit.such...that如此…以至于…Itissuchaheavyboxthatnobodycanmoveitaway.表不让步though/although虽然Hewouldbehappythoughheshouldhavetolivealone.Heoftenhelpsothersalthoughheisnotrich.表示比较as像…一样Doasyoulike.和…一样HeranasfastasMike.notas...as不及…Itisntaseasyasyouthink.than比…ShejumpedhigherthanRose.。
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