連詞一、并列連詞1.用于連接平行的詞、詞組和分句、句子。并列關(guān)系and和【常用于肯定句】or和【常用于否定句】both...and兩種都;既...又...notonly...butalso...不但...而且...【就近原則】neither...nor...既不...也不...【就近原則】選擇關(guān)系or或者【常用于疑問句】either...or...或者...或者...【就近原則】轉(zhuǎn)折關(guān)系but但是while然而yet但是however然而因果關(guān)系so因此,因此;因而;從而therefore因此for因?yàn)?由于2.表示同一邏輯關(guān)系的并列連詞和從屬連詞不能同時(shí)出現(xiàn)在同一個(gè)句子中！because和soalthough/though和but→不能連用3.并列連詞+例句?and(和)①連接并列的主語：TomandTonyarestudents.②連接并列的表語：Mikeistallandstrong.③連接并列的謂語：Theysanganddancedatthepartylastnight.④連接并列的動(dòng)詞不定式：Iliketoreadbooksandwatchmovies.【第二個(gè)不定式往往省略】⑤連接并列的動(dòng)詞分詞：Isawsomestudentssittingandtalkingthere.⑥連接并列的句子：Ilikeplayingbasketballandmybrotherlikesplayingfootball.⑦祈使句+and+簡(jiǎn)單句，“...那么...”：Becarefulandyouwillmakefewermistakes.?both...and...(兩者都;既...又...)BothyouandIarestudents.(謂語動(dòng)詞用復(fù)數(shù))?notonly...butalso...(不但...而且...)Heplaysnotonlybasketballbutalsofootball.NotonlyshebutalsoIamastudent.(謂語動(dòng)詞就近原則)?or(和)Therearen’tanypencilsorbooks.(表否定)?neither...nor...(既不...也不...)NeithershenorIlikeplayingbasketball.(謂語動(dòng)詞就近原則)?or(或者;還是)Whichseasondoyoulikebetter,springorsummer?(常用于選擇疑問句)?either...or...(兩者之一;或者...)EitheryouorIamright.(謂語動(dòng)詞就近原則)?but(但是)Shelikeseatingjunkfoodbutit’sbadforherhealth.?while(然而)Ilikereadingbookswhilehelikeslisteningtomusic.?yet(但是)Shesaidshewouldbelate,yetshearrivedontime.?however(然而)Ilikeeatingapples,however,hedoesn’tlikeapples.?so/therefore(因此;所以)Hehurthisleg,sohecouldn’tplayfootball.Hehurthisleg.Therefore,hecouldn’tplayfootball.?for(因?yàn)?Hedidn’tetoschooltoday,forheisill.二、從屬連詞1.用于連接主句和從句。引導(dǎo)名詞性從句that①只起連接作用，不做句子成分②在句中沒有實(shí)際意義③在賓語從句中通?？梢允÷詉f/whether①表示“是否”②不做句子成分引導(dǎo)狀語從句時(shí)間狀語從句when/while/as當(dāng)...時(shí)候after在...之后before在...之前assoonas一...就...until直到...為止since自...以來whenever無論何時(shí)nosooner...than一...就...hardly/barely...when剛一...就...地點(diǎn)狀語從句where在...地方wherever無論何地原因狀語從句because因?yàn)閍s/since因?yàn)閚owthat既然比較狀語從句than比as...as...與...一樣notas/so...as...與...不一樣讓步狀語從句although/though雖然;盡管while雖然;盡管as/evenif/eventhough即使條件狀語從句if如果unless除非as/solongas只要方式狀語從句as像/與...一樣asif/asthough好像目的狀語從句inorderto/that目的是.../為了...sothat/so以便結(jié)果狀語從句so/such...that...太...以致于...so因此;所以2.?？紡膶龠B詞+例句1).引導(dǎo)名詞性從句連詞?that(無實(shí)際意義)Thegirlfeelsthattheweatheriscold.?if/whether(是否)Heaskedmeif/whetherIknewMike.Iwonderwhetherhewilleornot.(whether一般和ornot連用)2).引導(dǎo)狀語從句連詞?時(shí)間狀語從句Iwassleepingwhenshecamein.Iwassleepingwhileshewasrunning.IwenttobedafterIfinishedmyhomework.IfinishedmyhomeworkbeforeIwenttobed.Iwon’tgohomeuntilteno’clock.(not...until)?地點(diǎn)狀語從句Youcantakewithyouwhereveryougo.?原因狀語從句IwaslateforschoolthismorningbecauseIstayeduplatelastnight.?比較狀語從句Iamastallasyou.Englishisnotas/sodifficultasMath.?讓步狀語從句Although/Though/Evenif/Eventhoughtherearedifficulties,wemustdoitwell.?條件狀語從句Wewillstayathometomorrowifitisrainy.Youwillfailunlessyouworkhard.Youwillgetgoodgradesaslongasyoustudyhard.?方式狀語從句Wedidashetoldus.?目的狀語從句Isavedmymoneyinordertobuyabike.IsavedmymoneyinorderthatIcanbuyabike.IsavedmymoneysoIcanbuyabike.