语法讲解：主谓一致
<p> 在英语句子里，谓语受主语支配，其动词必须和主语在人称和数上保持一致，这就叫主谓一致。寻其规律，大致可归纳为三个原则，即语法一致、逻辑意义一致和就近一致原则。</p><p> </p><p> 一、语法一致原则</p><p> </p><p> 语法上一致就是谓语动词和主语在单、复数形式上保持一致。</p><p> </p><p> 1.以单数名词或代词、动词不定式短语、动名词短语或从句作主语时，谓语动词一般用单数形式；主语为复数时，谓语动词用复数形式。 如：<span word="Hisfatherisworkingonthefarm">Hisfatherisworkingonthefarm</span>./<span word="TostudyEnglishwellisnoteasy">TostudyEnglishwellisnoteasy</span>. /<span word="Whathesaidisveryimportantforusall">Whathesaidisveryimportantforusall</span>./<span word="Thechildrenwereintheclassroomtwohoursago">Thechildrenwereintheclassroomtwohoursago</span>./<span word="Readinginthesunisbadforyoureyes">Readinginthesunisbadforyoureyes</span>.</p><p> </p><p> 注意：由<span word="what">what</span>引导的主语从句，后面的谓语动词多数情况用单数形式，但若表语是复数或<span word="what">what</span>从句是一个带有复数意义的并列结构时，主句的谓语动词用复 数形式。 如：<span word="WhatIboughtwerethreeEnglishbooks">WhatIboughtwerethreeEnglishbooks</span>./<span word="WhatIsayanddois">WhatIsayanddois</span>（<span word="are">are</span>）<span word="helpfultoyou">helpfultoyou</span>.</p><p> </p><p> 2.由连接词<span word="and">and</span>或<span word="bothand">bothand</span>连接起来的合成主语后面，要用复数形式的谓语动词。 如：<span word="LucyandLilyaretwins">LucyandLilyaretwins</span>./<span word="SheandIareclassmates">SheandIareclassmates</span>. /<span word="Theboyandthegirlweresurprisedwhentheyheardthenews">Theboyandthegirlweresurprisedwhentheyheardthenews</span>./<span word="BothsheandheareYoungPioneers">BothsheandheareYoungPioneers</span>.</p><p> </p><p> 注意：（1）若<span word="and">and</span>所连接的两个词是指同一个人或物时，它后面的谓语动词就应用单数形式。如：<span word="Thewriterandartisthascome">Thewriterandartisthascome</span>. （2）由<span word="and">and</span>连接的并列单数主语前如果分别有<span word="no">no</span>，<span word="each">each</span>，<span word="everymorethana">everymorethana</span>（<span word="an">an</span>），<span word="manya">manya</span>（<span word="an">an</span>）修饰时，其谓语动词要用单数形 式。如：<span word="Everystudentandeveryteacherwasintheroom">Everystudentandeveryteacherwasintheroom</span>./<span word="Noboyandnogirllikesit">Noboyandnogirllikesit</span>.</p>
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