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ID:40532544
大小:50.50 KB
页数:5页
时间:2019-08-04
《Be动词相关用法》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、be是一个多功能动词,在初级英语里可见四种用法功能一,系动词bebe为连系动词,中心词义是"是",句型为"主+系+表"结构。be的形式常用am,is,are(现在式);was,were(过去式);will/can/may/mustbe(助动词/情态动词+原形);have/has/hadbeen(助动词+过去分词)等。如:Tohelpanimalsishelpingpeople.(一般现在时)Thetwinswereverybusyyesterday.(一般过去时)Itwillbesunnytomorrow.(一般将来时
2、)Shehasbeenillforoveraweek.(现在完成时)功能二,助动词be助动词be,无词义,辅助主要动词一起在句中作谓语动词。用法如下:1.be+doing:构成进行时态,有现在和过去两种进行时态。如:Thegirlsisreadingandcopyingthenewwordsnow.YoungTomwasalwaysaskingquestionsandtryingoutnewideas.2.be+done:构成被动语态(主语是动作的承受者,done必须是及物动词)。如:Teaisgrowninmyhom
3、etown.(一般现在时的被动语态)Thisbuildingwasbuiltthreeyearsago.(一般过去时的被动语态)Ourclassroomhasbeencleanedandtidiedalready.(现在完成时的被动语态)Howcouldthiskindofcakesbemadeinyourhome?(含情态动词的被动语态)Thatisadaynevertobeforgotten.(动词不定式的被动语态)3.be+goingtodo,表示"打算或将要做某事",be有现在和过去两种形式。如:Wearego
4、ingtoplanttreesinthepark.Ididn'tknowifshewasgoingtocomehere.4.be+todo,表示"按计划安排将要做某事"。如:ThenewshopisnottobeopenedtillnextMonday. OnenightanangelcametoMaryandtoldherthatshewastohavethisspecialboy.功能三,therebetherebe句式为:therebe+主语部分+状语部分,表示"某处存在某物",be常用现在时,过去时和将来时等
5、。如:Oh,cool!Andtherearemanythingstosee.ThereisevenadeerparkinSanya.Thereareabout80pyramidsinEgypt.Willtherebeafootballmatchinyourschoolnextweek?功能四,实义be可以将be视为实义动词,因为它具有实际的词义,如"成为;做;发生;举行;逗留;到达"等。如:Hisdaughterwantstobeadoctorforanimalsinhertwenties.Kate'sbirthday
6、partywillbeathalfpastsixthisevening.JimhasbeeninChinaformorethantwoyears,buthehasnotyetbeentoYichang.Therebe句型的用法一、构成:Therebe...句型表示的是“某处有(存在)某人或某物”,其结构为Therebe(is,are,was,were)+名词+地点状语。例如:1)therearefifty-twostudentsinourclass.2)Thereisapencilinmypencil-case.3)T
7、herewasanoldhousebytheriverfiveyearsago.二、各种句式:否定句:在be后加上“not”,也可用“no”来表示。即:no+n.(名词)=notaanany+n.(名词)。例如:1)Thereisanorangeinherbag.→Thereisn’tanorangeinherbag.→Thereisnoorangeinherbag.2)Therearesomeorangesinherbag.→Therearen’tanyorangesinherbag.→Therearenoora
8、ngesinherbag.3)Thereissomejuiceinthebottle.→Thereisn’tanyjuiceinthebottle.→Thereisnojuiceinthebottle.一般疑问句:Therebe结构的一般疑问句变化只需把be动词移到句首,再在句尾加上问号即可。例如:4)Thereissomemon
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