小学英语be动词用法

Be动词讲解及练习Be动词的用法：一、Be动词包括：am,is,are口诀：我用am,你用are,is用在他她它，复数全用are。1、肯定和否定句：否定句：在Be动词后加notIam(not)fromCanada.Heis(not)astudent.Sheis(not)inthereadingroom.Mynoseis(not)big.Hiseyesare(not)small.2、一般疑问句：把Be动词提到句首IamChinese.AmIChinese?Yes,youare.No,youaren’t.Theyareteachers.Aretheyteachers?Yes,theyare.No,theyaren’t.Thecatismine.Isthecatyours?Yes,itis.No,itisn’t.二、Be动词在一般过去时中的变化：am--wasis--wasare--were1、am和is在一般过去时中变为was。（wasnot=wasn’t）2、are在一般过去时中变为were。（werenot=weren’t）3、带有was或were的句子，其否定、疑问的变化和is,am,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。三、therebe句型中be动词的用法1、在therebe句型中，be动词根据最靠近be动词的那个名词决定，主语是单数或不可数名词，be动词用is；主语是复数，be动词用are。2、therebe句型的否定句在be动词后加not，一般疑问句把be动词调到句首。用恰当的be动词填空。1.I______astudent.______youateacher?No,I_____not.2.Theboy______Tom'sbrother.3.Thehorse_______tallandfat.4.Themanwithbigeyes_______ateacher.5.______yourbrotherintheclassroom?6.Where_____yourmother?She______athome.7.How_______yourfather?8.MikeandLiuTao______atschool.9.Whosedress______this?10.Whosesocks______they?11.That______myredskirt.12.Who______I?13.Thepants______onthedesk.14.Here______ashirtforyou.15.Here______thewhiteshoesforyou.16.Theblackgloves______forJack.17.Thispairofgloves______forMrBlack.18.Thetwocupsofmilk_____forme.19.Sometea______intheglass.20.LiLei’sshirt_______overthere.21.Mysister'sname______Nancy.22.This______notWangFang'spencil.23.______DavidandHelenfromEngland?24.There______agirlintheroom.25.There______someapplesonthetree.26._______thereanykitesintheclassroom?27._______thereanyapplejuiceinthebottle?28.There_______somebreadontheplate.29.There_______aboy,twogirls,threemenandtenwomeninthepark.30.You,heandI______fromChina.