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1、系动词Be(am,is,are)的用法一、请记住以下口诀：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。二、Be动词在一般过去时屮的变化：1.am和is在一般过去时中变为waso(wasnot二wasn't)2.are在一般过去时中变为were。(werenot二weren^)3.带有was或were的句子，其否定、疑问的变化和am,is,are一样，即否定句在was或were后加not,一般疑问句把was或were调到句首。相关练习题—、用am,is,ar
2、e填空1.1aboy.youaboy?No,Inot.2.ThegirlJack*ssister.3.Thedogtallandfat.4.Themanwithbigeyesateacher.5.yourbrotherintheclassroom?2.Whereyourmother?Sheathome・3.Howyourfather?4.MikeandLiuTaoatschool.5.Whosedressthis?6.Whosesocksthey?11・Thatmyredskirt・12.WhoI?13.Thejeansonthedesk・14.Hereascarfforyou.15.H
3、eresomesweatersforyou.16.Thetwocupsofmilkforme.17.Someteaintheglass.18.Gaoshan'sshirtoverthere・19.MysistefsnameNancy.20.ThisnotWangFang'spencil・21・DavidandHelenfromEngland?22.Thereagirlintheroom.23.Theresomeapplesonthetree.24.thereanykitesintheclassroom?25.thereanyapplejuiceinthebottle?26.Thereso
4、mebreadontheplate.27.Thereaboy,twogirls,threemenandtenwomeninthepark.22.You,heandIfromChina.二、用be动词的适当形式填空1.1atschooljustnow（刚才）・2.Heatthehotellastweek・3.Westudentstwoyearsago.4.Theyonthefarmamomentago（冈lj才）.5.YangLingelevenyearsoldlastyear・6.Thereanappleontheplateyesterday.7.Theresomemilkinthefr
5、idgeonSunday.8.Thephoneonthesofayesterdayevening・9.1anEnglishteachernow.10.Shehappyyesterday.1LTheygladtoseeeachotherlastmonth.12.HelenandNancygoodfriends.13.Thelittledogtwoyearsoldthisyear・14.Look,therelotsofgrapeshere・15.TodaythesecondofJune・YesterdaythefirstofJune.ItChildren'sDay.Allthestudent
6、sveryexciteam,is，are的用法1.is和are可分别与not缩写为isn't和aren't,但am却不能与not缩写为amrTt,虽然有人把它缩为ain^,但这毕竟是规范的口语说法，不宜仿用。1.陈述部分为第一称肯定式时的反意疑问句，通常fflaren5t如：Fmlate,aren^I?我迟到了,是吗？2.不要认为在主语之后总是用am。试看：BothheandIareright.他和我都对。或他和我都不对。NeitherhenorIam（或are）right.他和我都不对.nI"isanEnglishletter.I是英语字母。3.当am,isare位于句末时，均不能与主
7、语缩写。女口：Tellmewhereheis（不能用he，s）。告诉我他在哪儿。HeistallerthanIam（不能用I'm）。他比我高。A：AretheywatchingTV?他们在看电视吗？B：Yes,theyare.（不能用they9re）是的。注：若其后有not时，am,is,are则可以与主语缩写，其中is和are也可与not缩写。女口：AretheywatchingTV?-No,they9renot（或theyare
