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一、如果主语是不可数名词,动名词,不定式或从句的时候,谓语动词用单数.Smokingisnotagoodhabit.Tolivehappilyneedsalotofthings.WhatIsaidistrue.二、如果由and连接的两个做主语的单数名词指的是同一个人或物的时候,用单数动词.Thesingerandsongwriterisdead.ThescienceandtechnologyplaysanimportantpartinChina.Breadandbutter(=butteredbread)isagoodfoodforpatients.“WarandPeace”isthebestbookIhaveeverread.如果由and连接的两个或更多的主语之前有each,every,manya/an,no的时候用单数名词.Everyboyandgirlintheclassworksveryhard.Eachminuteandsecondisvaluabletous.三、主语是单数,后面跟有with,alongwith,togetherwith,besides,aswellas,but,except,nolessthan,ratherthan,morethan,like,including,inadditionto的时候,谓语动词用单数.JackwithhisfamilywantstogotoChina.He,aswellasyou,isveryhonest.NoonebutIisastudent.Herbrother,togetherwithhiswifeandchildren,waskilledintheaccident.Thefather,ratherthanthebrothers,isresponsible.四、由some,any,no,every构成的复合代词(sb,sth---)和each,either,neither,one,theother,another,little,alittle,much,noone,nothing做主语的时候,谓语动词用单数.Eachofyouisclevererthanme.Neitherstudenthaspassedtheexam.Isanybodyhere?五、both,few,afew,several,many以及others做主语的时候,永远用复数动词.Severalfriendswereinvitedtotheparty.Bothbooksaresoldout.六、all,none,any,some,more和most要是修饰单数名词,谓语动词用单数;若是修饰复数名词,就用复数动词.Mostoftheappleisbad.Mostoftheapplesarebad.Noneofthismoneyisyours.Noneofthepeoplehereareteachers.七、由or连接的两个以上主语时,动词和最接近的主语一致.Youorheiswrong.Areyouorhewrong?由either…or,neither…nor,notonly…butalso连接的两个以上主语时,动词和最近的主语一致.Eitherheoryouhavetotellthetruth.Neithermybrothernorhisfriendsareover18yearsold.Notonlythebasketballplayersbutalsothecoachwasverynervous.八、若主语的复数名词表示的是”一段时间”,“一笔钱”,“一段距离”,“一个数量”,“一个面积”的时候用单数谓语动词.Twoweeksistoenoughformetofinishit.Fivethousanddollarsistoomuch.Tenkilometersistoolongformetorun.九、people(人民),police,cattle(牛群)等常用复数动词.有一些集体名词,如果表示的是整体就用单数动词,如果表示的是其中的个体就用复数谓语动词.这样的词常见的有family,class,audience,public,team等等.Hisfamilyareallsingers.Hisfamilyisverylarge.十、关系代词在定语从句中作主语时，谓语动词与先行词一致。Thosewhowanttogopleasesigntheirnameshere.十一、一些名词只有复数形式，如clothes,scissors,trousers,shorts,scales等，作主语时谓语用复数形式Thescales天平aremine.但是成双的东西前面有apairof要用单数。Thispairofscissorsbelongstothetailor.十二、如果主语由“akindof(aseriesof)构成，谓语一般用单数形式。Thiskindofmenisdangerous.如果是多种，谓语动词要用复数。Therearemanykindsofapples.十三、算术式通常用单数。十四、ics结尾的学科用单数谓语动词。十五、书名，剧名，报纸名，国名的复数名词作主语，谓语动词用单数。Theunitedstatesisacapitalistcountry.“TheArabianNights”isaveryinterestingstory-book.十六、“the+形容词（分词）“指人谓语动词用复数形式。指抽象谓语动词用单数。TheEnglishspeakEnglish.Thenewalwaysbeatstheold.十七、who,what,which,all,more,mostsome,any,none,half,therest,theremainder等作主语要看各自的情况。十八、oneandahalf加复数名词作主语谓语动词用单数。Oneandahalfbananasisleftonthetable.