句子成分英语的基本成分有八种:主语(subject)谓语(predicate)宾语(object)表语(predicative)定语(attribute)状语(adverbial)补足语(complement)同位语(appositive)主语:是一个句子所叙述的主体,一般位于句首。但在therebe结构、疑问句(当主语不疑问词时)和倒装句中,主语位于谓语、助动词或情态动词后面。1)Mr.Leeisawell-knownscientist.2)Hereadsnewspaperseveryday.3)Whatweshalldonextisnotyetdecided.谓语:说明主语的动作或所处的状态。谓语(predicate)或谓语动词(predicateverb)的位置一般在主语之后。谓语由简单动词或动词短语(助动词或情态动词+主要动词)构成。1)Thenewtermbeginsonthe1stofSeptember.2)Iwouldliketoinviteallmyfriendshere.5)Heisworkinginthegarden.表语:是谓语的一部分,它位于系动词(如be,become)之后,与系动词一起构成复合谓语,说明主语的身份,特征,属性或状态等。单词、短语或从句均可充当表语。1)Wang’sfatherisadoctor.(名词)2)Heisalwayscareless.(形容词)3)Thebasketballmatchison.(副词)4)Allthepupilsareontheplaygroundnow.(介词短语)宾语:表示动作的对象或承受者,一般位于及物动词或介词后面.1)WangLinggivemeabooktoreadinthebus.(双宾语)2)Themedicineisgoodforthisboy.3)DoyouunderstandwhatImean?定语:是对名词或代词起修饰、限定作用的词、短语或句子,汉语中常用‘……的’表示。Maryisachemistryteacher.(名词作定语)Heisourfriend.(代词作定语)Hewasadvisedtoteachthelazyboyalesson.(形容词作定语)Themanoverthereismyoldfriend.(副词作定语)状语:修饰动词、形容词、副词或全句,说明方式、因果、条件、时间、地点、让步、方向、程度、目的等。1)Shesingsquitewell.(副词)2)OnSundays,thereisnostudentintheclassroom.(介词短语)3)Arrivingthere,callmeup.4)Theboyneedsapentodohishomework.5)Heisveryhandsome.补足语:用来补充说明宾语或主语的性质、状态。分为宾补和主补。主补:对主语的补充。Hewaselectedmonitor.Shewasfoundsinginginthenextroom.Hewasadvisedtoteachthelazyboyalesson.宾语补足语:在宾语后面补充说明宾语的动作,状态,特征.Weelectedhimmonitor.(名词作宾补)Wewillmakethemhappy.(形容词作宾补)Wefoundnobodyin.(副词作宾补)Pleasemakeyourselfathome.(介词短语作宾补)Don’tlethimdothat.(省to不定式名词作宾补)Hisfatheradvisedhimtoteachthelazyboyalesson.(带to不定式名词作宾补)Don’tkeepthefireburning.(现在分词名词作宾补)I’llhavemybikerepaired.(过去分词名词作宾补)同位语是在名词或代词之后,对其作进一步解释或说明,在语法上处于同等地位。名词、代词、数词、和从句等均可作同位语。如:Westudentsshouldstudyhard.(students是we的同位语,都是指同一批‘学生’)Weallarestudents.(all是we的同位语,都指同样的‘我们’)Thenewsthatwe’rehavingaholidaytomorrowistrue.(从句作同位语)英语句子的基本结构可以归纳成五种基本句型及其扩大、组合、省略或倒装。掌握这五种基本句型,是掌握各种英语句子结构的基础。一:SV(主+谓)二:SVP(主+系+表)三:SVO(主+谓+宾)四:SVoO(主+谓+间宾+直宾)五:SVOC(主+谓+宾+宾补)基本句型一:SV(主+谓)主语:可以作主语的成分有名词,主格代词,动词不定式,动名词等等。主语一般在句首。谓语:谓语由动词构成,是英语时态、语态变化的主角,一般在主语之后。不及物动词(vi.)没有宾语,形成主谓结构。如:Wecome.S│V(不及物动词)1.Thesun│rose.2.Who│cares?3.Whathesaid│doesnotmatter.4.They│talkedforhalfanhour.5.Thepen│writessmoothly此句型的句子有一个共同特点,即句子的谓语动词都能表达完整的意思。这类动词叫做不及物动词,后面可以跟副词、介词短语、状语从句等。主语可有修饰语-定语,谓语可有修饰语-状语。如:1.Theredsunrisesintheeast.2.Sotheyhadtotravelbyairorboat.3.Wegotupearlysoastocatchthefirstbus.4.Shesattherealone,readinganovel.5.Hecamebackwhenwewereeating.6.Weakbuildingswillfalldowninanearthquake,butstrongonesmaystayup.基本句型二:SVP(主+系+表)此句型的句子有一个共同的特点:句子谓语动词都不能表达一个完整的意思,必须加上一个表明主语身份或状态的表语构成复合谓语,才能表达完整的意思。这类动词叫做连系动词。系动词分两类:be,look,keep,seem等,表情况;get,grow,become,turn等属另一类,表变化。be本身没有什么意义,只起连系主语和表语的作用。其它系动词仍保持其部分词义。感官动词多可用作连系动词:lookwell/面色好,soundnice/听起来不错,feelgood/感觉好,smellbad/难闻S│V(是系动词)│P(表语)1.This│is│anEnglish-Chinesedictionary.2.Thedinner│smells│good.3.He│fell│inlove.4.Everything│looks│different.5.He│isgrowing│tallandstrong.6.Ourwell│hasgone│dry.7.Hisface│turned│red.*Therebe结构:Therebe表示‘存在有’。这里的there没有实际意义,不可与副词‘there那里’混淆。此结构后跟名词,表示“(存在)有某事物”。试比较:Thereisaboythere.(那儿有一个男孩)前一个there无实意,后一个there为副词‘那里’。系动词词义不完整,在句中不能单独使用(除省略句外),后面必须接有表语,系动词和表语一起构成合成谓语。一、系动词的分类:常见的系动词大致可分为三类。第一类:表示特征或状态的,有be,look,feel,seem,appear,smell,taste,sound,turnout(结果是、证明是)等。You’llbeallrightsoon.Youdon’tlookverywell.Ifeelrathercold.Heseemstobeill.Itappearsthatheisunhappy.Therosessmellsweet.Themixturetastedhorrible.Howsweetthemusicsounds!Thedayturnedout(tobe)afineone.第二类:表示从一种状态到另一种状态的变化,有become,get,grow,turn,fall,go,come,run等。Hebecameaworld-famousscientist.Itisgettingwarmerandwarmer.Itgrewdark.Thefoodhasturnedbad.第三类:表示保持状态的,有keep,remain,continue,stay等。Keepquiet,children!Theweathercontinuedfineforalongtime.Itremainstobeproved.系动词后的表语可以是名词、代词、数词、形容词、分词、动名词、不定式、副词、介词短语、词组、从句,系动词be可用于上述所有情况。Thenewswassurprising.(分词)HisjobisteachingEnglish.(动名词)Theonlymethodistogivethechildmorehelp.(不定式)Imustbeoffnow.(副词)Thebridgeisunderconstruction.(介词短语)Thatwouldbeagreatweightoffmymind.(词组)Thisiswhyhewaslate.(从句)所有的系动词都可接形容词作表语,此处略举数例。Ourfuturewillbebeautiful.Shelooksunhappytoday.Doyoufeelcold?Youseem/appearill.Thefoodtastesdelicious.Theweatheristurning/growing/becoming/gettingcold.Heoftenwenthungry.3.能用不定式作表语的系动词有:appear,seem,get,prove,remain,turnout等。Sheappears/seemstobeveryyoung.Heappears/seemstohavecaughtcold.Theygottobefriends。Themeetingturnedouttobesuccessful.Thetheoryprovedtoberight.Muchremainstobedone.4.能接从句的有:be,seem,appear,sound,look等。That’swhyhefellill.Myideaisthatweshouldhelphim.Itseems/appearstomethatsomethingiswrong.Itsoundstomeasifsomeoneweretryingtogetintothehouse.Yourvoicesoundsasifyouhadacold.Itlooksasifitisgoingtorain.5.能接介词短语的有:be,feel,look,sound,taste,remain等。be是特别活跃的系动词,其后可接很多介词短语作表语。Heisathome/inthelibrary/onthewayhome/onholiday.Theyareonduty/onstrike/onleave.Theroadisunderrepair.其他系动词能和介词搭配的范围很小。如:Itfeelslikearain.Itlookslikearain.Itsoundslikeatraingoingundermyroom.Ittastesofapples.(这有苹果的味道。)Theconcertremainsinmymemory.6.能接分词的系动词有:be,become,get,grow,seem,appear等。Hisreportwassurprising/disappointing/