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1、英语语法顺口溜：be动词的用法口诀be的用法口诀我用am，你用are，is连着他，她，它;单数名词用is，复数名词全用are。变疑问，往前提，句末问号莫丢弃。变否定，更容易，be后not莫忘记。疑问否定任你变，句首大写莫迟疑。be动词的用法：be(be/is/are/am/was/were)vi现在时Iam,youare,heis,weare,youare,theyare(缩略式I'm,you're,he's,we're,you're,they're),(否定缩略式I'mnot,isn't,aren't),过去时
2、Iwas,youwere,hewas,wewere,youwere,theywere(过去时否定缩略式wasn't,weren't),过去分词been,现在分词being英语的“be”是个特殊动词;有些语言，如马来文等，并没有“be”这样的动词。“Be”除了原形的“be”之外，还有另外七种形式：am,is,are,been,being,was,were.在句子中，“be”可以是主动词(ThePrincipalVerb)或助动词(TheAuxiliaryVerb)例句对照【当主动词时，“be”在性质上属于接系动词(
3、TheLinkingVerb),后面要有名词、形容词、地方副词或短语作补足语(TheComplement)。例如：1.Themanisascienceteacher.这个男子是一位科学教师2.Mary'snewdressesarecolourful.玛丽的新衣服色彩鲜艳3.Ihavebeentherebefore.我以前去过那里4.MymotheriswatchingTVintheroom.母亲现在在客厅看电视【这四个都是陈述句，可以变成疑问句，方法简单，把主语和“be”或助动词对换位置即可：5.Istheman
4、ascienceteacher?6.AreMary'snewdressescolourful?7.HaveIbeentherebefore?8.Ismotherinthekitchennow?【当“be”要在祈使句中出现时，它必须借重助动词“do”或“don't”之助，如：9.Don'tbesilly!10.Dobeobedient!11.Don'tbeafool!【“Be”有两种缩写法，如下：12.He'snot...../Heisn't....13.You'renot...../Youaren't...【但“
5、am+not”的缩写法只有一个：14.I'mnot.有人用“ain't”,但这并不是标准英语。谈过了“be”作主动词的功能，现在看看“be”作助动词时，有些什么用法：【1.】“Be+现在分词”以组成进行式时态(ContinuousTenses)，如：15.Tony'smaidiswashinghisnewcar.16.Thechildrenareplayinginthefield.17.SamuelwaseatingwhenIcamein.18.Wehavebeenlivingheresince1959.【2.】
6、“情态动词+Be+过去分词”以组成被动语态(ThePassiveVoice),如：19.Hermoneyinthedrawerwasstolen.20.Anumberofgoodjobsaretakenupbyforeigners.21.DavidstudiedinTaiwanbuthasbeentrainedasalanguagelecturerinAmerica.22.CanallthewonderfulbirdsbefoundinourBirdPark?23.Thedisobedientboywastold
7、tostandout-sidetheclassroom.24.Stepsarebeingtakentoreducetrafficcon-gestionduringpeakhours.25.Dishoneststudentswillbeimmediatelydealtwith.
