小学be动词讲义(教师整理精华版)

Be动词专题讲义一．概念Be动词有三个：am，is，are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。二．用法剖析1.如果主语是第一人称I（我）时，be动词用am。Iam还可缩写成I'm。如：I'mDavid.我是大卫。2.如果主语是第三人称代词、单数名词或不可数名词时，be动词用is。如:Heisastudent.他是一名学生。Mymotherisateacher.我的妈妈是一名老师。is也可与主语缩写。如:Heis=He's,Mymotheris=Mymother's等。但是Thisis不可缩写。而is与not可缩写成isn't。如:Thisisn'tabook.这不是一本书。3.如果主语是第二人称you，be动词必须用are。如果主语是名词复数（两个以上的人或物）时，be动词必须用are。如：TomandLilyaregoodfriends.汤姆和莉莉是好朋友。Theyareatschool.他们在学校。are与主语还可缩写。如：Weare=We're。而are与not可缩写成aren't。如：Theyaren'tstudents.他们不是学生。单数名词用is，复数名词全用are。如：Thebookisoverthere.(一本书）Thebooksareoverthere.（多本书）疑问句变化口诀:变疑问，be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。变疑问，往前提，句末问号莫丢弃。(陈述句中谓语为is,are,am时，变疑问句只将其提前）如：Itisabook.变为：Isitabook?变否定，更容易，be后not莫忘记。如：Itisabook.变为:Itisnotabook.(否定句）疑问否定任你变，句首大写莫迟疑。如：Itisabook.变为：Isnotitabook?(疑问否定句）巩固练习1、Helen____astudent2、This_____mybook.3、Myfather______acook.4、Jack’sfriend____inthestudy.5、Yourmother_____swimming.6、Yoursister______inthestudy.7、Thosejackets_______mysister’s.8、That______herdog.9、Thecat_______onthedesk.10、Thebooks_______underthetable.11、Hissisters______running.12、Thistrain____forShanghai.13、Thedress______toobig.14、Thisbook______foryou.15、Thewaitress______mymother.16、Thosegrapes________green.17、Thechildren________singing.18、HelenandI______intheclassroom.19、I_____adoctor.20、______youanurse?Yes,Iam.21、Therealotofsweetsinthebox.22、Theresomemilkintheglass.23、Theresomepeopleunderthethebigtree.224、Thereapictureandamaponthew25、Thereaboxofrubbersnearthebooks.26、Therelotsofflowersinourgardenlastyear.27、Thereatinofchickenbehindthefridgeyesterday.28、Therefourcupsofcoffeeonthetable.29.I______aboy._____youaboy?No,I____not.30.Thegirl______Jack'ssister.31.Thedog_______tallandfat.32Themanwithbigeyes_______ateacher.33______yourbrotherintheclassroom?34.Where_____yourmother?She______athome.35.How_______yourfather?36MikeandLiuTao______atschool.37.Whosedress______this?38.Whosesocks______they?39.That______myredskirt.40.Who______I?41.Thejeans______onthedesk.42.Here______ascarfforyou.43.Here______somesweatersforyou.44.Theblackgloves______forSuYang.