TwoweekswastoolongFivetimesfivemakestwentyfive.一般用and连接的两个单词或短语做主语时候谓语用复数但是下面用and连接的主语表示一个概念谓语用单数:lawandorder法制soapandwater肥皂水acupandsaucer茶杯碟子forkandknife刀叉theneedleandthread针线trialanderror反复尝试不断摸索horseandcarriage马车timeandtide岁月breadandbutter奶油面包theebbandflow盛衰潮涨潮落如:Iflawandordernotpreserved,neitherthecitizennorhispropertyissafeAisBareCwasdwere答案:A。.表示学科和某些疾病名称的名词是复数形式作主语时候谓语动词用单数形式Linguisticsisabranchofstudyonhumanlanguage.有些名词形式上是复数意义上是单数根据意义一致原则动词用单数ThechaoswasstoppedbythepoliceThenewsisagreatencouragementtousAseriesofdebatesbetweenthelectureswasscheduledforthenextweekend.用and连接的成份表示一个单一概念时候动词谓语用单数形式BreadandbutterisourdailyfoodTimeandtidewaitsfornoman《和同》二.谓语用复数情况.由and,both…and,连接的并列主语和both,afew,many,several等修饰语后面谓语动词通常用复数形式。FewpeopleknowheandIwereclassmateswhenwewereatcollege.集体名词police,public,militia,cattle,class,youth后常用复数形式的动词TheChinesepeoplearebraveandhardworkingThecattlearegrazinginthesunshine.当表示民族的词与冠词合用当主语谓语动词用复数形式TheJapanesewereonceveryaggressive.某些形容词前面加定冠词表示一类人做主语时候谓语动词用复数Thericharenotalwaysselfish.不可数名词作主语其前有表示数量的复数名词修饰时谓语动词用复数Threemilliontonsofcoalwereexportedthatyear三.谓语动词可用单数也可以用复数的情况.就近一致原则这种情况下谓语动词使用单数还是复数取决于最靠近该动词的主语的单复数存在这种情况的主要由以下几种可能:)由连词either…or…neither…nor…whether…or…notonly…but(also)or等连接的并列主语NeithermoneynorfamehasinfluenceonmeNotonlyyoubutalsoheiswrong)在倒装结构中谓语动词与后面的第一个主语一致Blockingtheopensidedporch,framedbytheenvelopingfog,standsatallgravefacedpolicemanJustoutsidetheruinsisamagnificentbuildingsurroundedbytalltreesAlthoughagreatnumberofhousesinthatareaarestillinneedofrepair,therehasbeenimprovementinthefacili.主语带有(togetheralong)with,suchas,accompaniedby,aswellas,nolessthan,except,besides,with,combinedwith,inadditionto,including,togetherwith等等附加成分谓语的数不受附加成分的影响仍然与主语保持一致ProfessorTaylor,withsixofhisstudents,isattendingaconferenceinBostonorganizedtocomparecurrentpracticeintheUnitedStateswiththoseofothernationsThepresidentofthecollege,togetherwiththedeans,isplanningaconferenceforthepurposeoflayingdowncertainregulations(年考研题).关系代词做主语的定语从句中谓语的数要与先行词一致。如:Despitemuchresearch,therearestillcertainelementsinthelifecycleoftheinsectthatarenotfullyunderstood(年考研题)Therearemanyvaluableserviceswhichthepublicarewillingtopayfor,butwhichdonotbringareturninmoneytothecommunity(年考研题).一些表示数量的短语与名词连用时候谓语动词的数取决于名词的数名词是复数谓语动词用复数反之就用单数。这些短语包括:alotoflotsofplentyofheapsofhalfoftwothird(threefourth…)ofeighty(ten,twenty…)percentpartofrestofnoneof等等TwothirdsofpeoplepresentarewomenLotsofdamagewascausedbythefire.