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1、連詞連詞是一種虛詞,它不能獨(dú)立擔(dān)任句子成分而只起連接詞與詞,短語與短語以及句與句的作用。連詞主要可分為兩類:并列連詞和從屬連詞。一.并列連詞:用來連接平行的詞、詞組和分句。1、and(1)連接兩個(gè)并列的謂語:Theysatdownandtalkedaboutsomething.(2)連接兩個(gè)并列的動(dòng)詞不定式,第二個(gè)不定式往往省略to:Theystartedtodanceandsing.(3)可以和祈使句或名詞詞組連用表示條件(or也有此用法):Makeupyourmind,andyou'llgetthechance.=Ifyoumakeupyourmin
2、d,you'llgetthechance.Onemoreeffort,andyou'llsucceed.=Ifyoumakeonemoreeffort,you'llsucceed(4)當(dāng)表示整體或者指同一人時(shí)謂語動(dòng)詞用單數(shù),當(dāng)and連接的單數(shù)名詞前分別有each,every,no等詞修飾時(shí),謂語也用單數(shù)。Thebreadandbutterisreallydelicious(美味的).Themotherandteacherisverystrictwithherson.Noteacherandnostudentisallowedtosmokeinclass.
3、(5)連接兩個(gè)相同意思的詞,表示“漸漸”,或加強(qiáng)語氣:Readitagainandagain2、both…and 兩者都Bothheandsheplaythepiano.3、neither…nor既不…也不…謂語動(dòng)詞采用就近原則,與nor后的詞保持一致。Neitheryounorheistoblame.4、notonly…but(also)不但…而且…Sheplaysnotonlythepiano,but(also)theguitar.*notonly…butalso關(guān)聯(lián)兩個(gè)分句時(shí),一個(gè)分句因有否定詞not而必須倒裝。Notonlydoesheliker
4、eadingstories,butalsohecanevenwritesome.5、aswellas也,與…一樣Theteacher,aswellasthestudents,isinterestedintheactivity.二.表示選擇關(guān)系1)or或者Whichdoyouprefer,coffeeorjuice?Hurryup,oryou'llbelatefortheclass.2)either…or或者…或者…(謂語動(dòng)詞采用就近原則)EitheryouorIamright.3)orelse/otherwise否則Besilent,orelseyouw
5、illbekickedout.Iamtired,otherwise,Iwouldplay.三.表示轉(zhuǎn)折或?qū)Ρ汝P(guān)系1)but但是Heisrichbutunhappy.2)while然而(表示對(duì)比意味)Somepeoplelovecats,whileothershatethem.3)yet然而Shesaidshewouldbelate,yetshearrivedontime.4)however然而,可是Shedoesnotlikehim,however,Ilikehim.5)not…but…不是…而是…(not和but后面的用詞要遵循一致原則)It'snot
6、mybook,butishisbook.四.表示因果關(guān)系1)for因?yàn)椋ㄗ霾⒘羞B詞使用時(shí),是在對(duì)先行的句子補(bǔ)述原因或者理由,只可以連接句子與句子,通常不置于句首)Heisabsenttoday,forheisill.2)so,therefore因此Hehurthisleg,sohecouldn'tplayinthegame.Ithink,thereforeIam.3)then那么,因而Runfast,thenhewon’tcatchyou.注意:a.兩個(gè)并列連詞不能連用,但therefore,then,yet可以和并列連詞連用。YoucanwatchTV
7、,andoryoucangotobed.(錯(cuò)誤)Hehurthisleg,andso/andthereforehecouldn'tplayfootball.(正確)b.although不與but連用,但是although可以與yet連用Althoughhewasill,buthetriedhisbesttodothework.(錯(cuò)誤)Althoughhewasill,yethetriedhisbesttodothework.(正確)