一个中心，三项原则，四种框架——谈主谓一致“主谓一致的一个中心”，指句子主谓成分之间的人称、数、性等各方面要保持一致的关系。三项原则“三项基本原则”为语法一致、意义一致和就近原则。一、语法一致原则：即在语法形式上取得一致，例如，主语为单数形式，谓语动词也用单数形式。主语为复数形式，谓语动词也用复数形式。JaneandMarylookalike.Myglassisbeautiful.Hisglassesaregood.二、意义一致原则：即从意义着眼处理一致关系，主语形式虽为单数，但意义为复数，谓语动词也用复数形式。或者主语形式虽为复数，但意义上视为单数，谓语动词用单数。Thecattleareeatinggrass.(单数形式代表复数内容的词还有people,police等)Thenewswasveryexciting.(形复意单的词还有works,physics,politics,economics等。)三、就近原则：即谓语动词的单复数形式取决于最靠近它的词语。当or,either…or,neither…nor…,not…but;notonly…butalso连接两个主语时及由there和here引导的句子。四种框架一、谓语动词用单数1.主语为单数，尽管含with,togetherwith,like,aswellas,alongwith,including,but,except,besides,ratherthan（而不）,inadditionto等引导的词组，谓语动词用单数。例如：Theteacheraswellasthestudentswasexcited.Theroomwithitsfurniturewasrented.Tom,togetherwithhistwochildren,isgoingtothecinema.Note:若主语为复数，谓语动词用复数Theteachersaswellasthestudentsaregoingtoplayfootball.2.主语是each或由some,any,no,every等构成的复合代词时，谓语动词用单数。Iseverybodyready?合成代词someone,anything,nobody,everyone等作主语，代词each,everyone,noone,either,neither,another,theother等作主语，谓语动词用单数。Nothingintheworldmovesfasterthanlight.3.当名词词组中心词为表示度量、距离、价格金额、时间、书名、剧名、报名、国名等，往往根据意义一致原则，把这些复数名词看作整体，谓语动词用单数。主语为不定式或动名词时，谓语动词也用单数。eg.1)Fiveminutesisenoughtodothisexercise.2)TheSelectedPoemsofLiBaiwaspublishedlongago.3)Whenandwheretobuildthebuildinghasn’tbeendecidedyet.4)Tenpoundsisnotenough.Note:若表示个体，谓语动词用复数。Threemonthshavepassedsincesheleft.4.如果主语由morethanone…或manya…+n(单数)构成，尽管从意义上看是复数内容，但谓语动词用单数。Eg.1)Morethanonestudenthasseenthefilm.2)Manyashiphasbeendamagedinthestorm.5.thenumberof+复数名词，谓语动词用单数。Thenumberofpagesinthisbookistwohundred.6.oneandahalf+复数名词作主语，谓语动词用单数。Oneandahalfbananasisleftonthetable.7.由and连接的两个并列主语的前面，如果分别有every，each，no或manya等修饰时，谓语动词用单数。Eachboyandeachgirlwantstoservethepeopleinthefuture.8.equipment,machinery,jewelry,clothing,furniture等词是集合名词，它们习惯上看做单数，作主语时谓语动词用单数。Alotofjewelrywasstoleninthatshoplastnight.二、谓语动词用复数1.某些集体名词，如people,police,cattle等，只当复数看待，谓语动词必须用复数。Thepolice