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1、SchoolandFriends单元语法聚焦一 [be动词(am,is,are)的用法]1.Hello,I'mLiMing!你好,我叫李明!2.She'sinClassFive.她在五班。3.Theyareverynice.他们都非常友好。4.—Isitaruler?—No,itisn't.“它是一把尺子吗?”“不,不是。”5.What'sthat?那是什么?通过观察这些教材中的句子,我们可以看到这三个词:am,is和are。am,is和are是be动词的三种形式,意为“是”。本单元我们重点学习be动词的用法。be动词形式适
2、用的人称缩写amII'mishehe'ssheshe'sitit'sthis/that/hisname…that's/hisname's…(thisis不能缩写)areyou/we/theyyou're/we're/they're通过表格可以看出:be动词的形式随主语的变化而变化,具体如下:1.主语是第一人称单数I(我)时,be动词用am,Iam可缩写为I'm。例如:Iam/I'magirl.我是一个女孩。2.主语是第三人称单数、可数名词单数或不可数名词时,be动词用is。heis,sheis,itis和thatis可分别缩
3、写为he's,she's,it's和that's,thisis不可以缩写。例如:Heis/He'smyteacher.他是我的老师。Hernameis/Hername'sJenny.她的名字是詹妮。注意:(1)be动词还可与其他词缩写,例如:whatis=what's,thereis=there's等。be动词也可与not缩写,例如:isnot=isn't,arenot=aren't。但am与not不能缩写。(2)句中有be动词时,变否定句时,在be动词后加not;变一般疑问句时,把be动词提到主语之前。例如:Iamnoti
4、nClassOne.我不在一班。Isthisyourbook?这是你的书吗?3.主语是you(we,they,sheandI,these等)或可数名词复数(sevencoats,manypencils等)时,be动词用are。例如:Theyaremyfriends.他们是我的朋友。记忆口诀我(I)是am,你(you)是are,is连着他(he)她(she)它(it),单数is,复数are,不要混淆要牢记。Ⅰ.用be动词的适当形式填空1.What________yourname?2.I________fine,thanks.3
5、.WangFangandI________inthelibrary.4.How________yourmother?5.DannyandI________inthelibrary.6.This________mypicture.7.Theirrulers________white.8.Thepen________LiPing's.9.—________youateacher?—No,I________astudent.10.I________aboy.Yiyi________agirl.Ⅱ.单项填空( )1.You____
6、____fine,andI________fine,too.A.is;are B.are;amC.are;isD.am;is( )2.This________mygoodfriend.She________astudent.A.are;isB.is;isC.am;isD.is;am( )3.How________herfriends?A.areB.amC.isD.be( )4.—________LilyandLucytwins?—Yes.A.AmB.IsC.AreD.Be( )5.—Aretheyyourcla
7、ssmates?—No,________.A.thisisn'tB.I'mnotC.theyaren'tD.theyare( )6.“I”________aletter(字母)inEnglish.A.is B.amC.are D.be( )7.—AreyouWangHong?—________.I'mJenny.A.No,I'mnotB.No,IamC.IamWangHongD.Yes,I'm( )8.MissGao________ourteacher.She________tall.A.are;areB.are;is
8、C.is;isD.is;are( )9.They________newstudents.We________notnew.A.are;areB.are;amC.are;isD.am;is( )10.Here________mylist.A.beB.isC.amD.areⅢ.按要求完成下