Be动词的用法总结及专项练习Be动词的用法口诀 :be动词am\is\are,我(I)用am，你(you)用are，is连着他(he)，她(she)，它(it)；单数名词用is，复数名词全用are我们（we）你们（you）和他们（they）都用are;过去式am\is变was,are变were;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，句首大写莫迟疑一、Be动词与人称代词的搭配1、基本形式：am、are、is（1） am第一人称I+am (注意：“I”无论何时都要大写，不管位于句首还是句中)例：I am a beautiful girl. I am twenty.（2） are第二人称you+are; 一人称复数we+are； 三人称复数they+are 其他复数名词+are (注意：第二人称单复数同形，都为you) 例：You are my good friend. We are in the same class.They are on the road. The books are on the desk.(3 is第三人称he(男) +is ; she(女)+is; it(不是人)+is;其他单数名词+is例：He\She is a good student. It is a white cat.A dog is on that street.2、肯定、否定、疑问（等于号后是简写）肯定否定——be动词后加not一般疑问——be动词移到主语前一般疑问否定一般疑问回答 肯定和否定I am… =I’m ….I am not…=I’m not ...Am I…?Am not I…?Yes,I’m.No,I’m not.You are…= you’re…You are not…=You aren’t…Are you…?Are not you. ..? =Aren’t you…?Yes,you are.No,you are not.She\He\It is…=She\He\It is not… =She\He\It isn’t…Is she\he\it…?Is not she\he\it…? =Isn’t she\he\it…?Yes,she\he\It is.No,she\he\It is not.We are=We’reWe are not…=We aren’t…Are we…?Are not we…?=Aren’t we…?Yes,we are.No,we are not.They are=They’reThey are not…=They aren’tAre they…?Are not they…?=Aren’t they…?Yes,they are.No,they are not.例：I am(not) from London.My eyes are(not) small.My hair is(not) long.Am I a Chniese? 回答： 肯定：Yes, you are. 否定： No, you aren’t.Is the cat fat? 回答：肯定：Yes, it is. 否定： No, it isn’t.注意：在一般疑问回答中，肯定回答除I’m不可简写,否定回答均可简写。
另：特殊疑问句中：Where\How\Who\What\Why+be动词+人称代词或名词？例：What is your name? My name is Lili. Where are you? I’m in the classroom.二、Be动词专项练习题（一．）用be动词适当的词填空1. I ________ from Australia.2. She _______ an English student.3.Mike and Tom _________ my friends.4. My parents _______ very busy every day.6.I ______ an English teacher now.7.Where _________ you from?10.The light _________ green.11.My name _________ Li Lei. I _________ twelve.12._______they your new friends?13. I ______ a boy. ______you a boy? No, I _____ not.14. The girl______ Jacks sister.15. The dog _______ tall and fat.16. ______ your brother in the classroom yesterday?17. Where _____ your mother? She ______at home.18. Whose dress ______ this?19.That ______ my red skirt.20.Who ______ I?21. Some tea ______ in the glass.22.Jhon ______ busy last weekend..23. My sisters name ______Nancy.24. This ______ not Wang Fangs pencil.25. ______ David and Helen from England?26.We ____ friends.27.She ___ a teacher.28.I ___ a girl.29.Many ants ____ in my house.30.His mother ____ fat.（二.）写出下列词适当形式:1.I am (缩略形式) ______ 2.is (复数)______3.we are (缩略形式) ______ 4.are not(缩略形式) ______5.is not (缩略形式) ______ 6.is/am(过去式形式) ______ 7.shes(完整形式) ______ 8.its(完整形式) ______ 9.theyre(完整形式) ______ 10.are(过去式形式) ______（三. ）将下列句子变成否定句和一般疑问句1.His brother is a teacher.否定句:______________________________一般疑问句:__________________________2.They are his parents.否定句:______________________________一般疑问句:___________________________3.I was busy last weekend.否定句:_______________________________一般疑问句:___________________________4.Lucy is gong to the bookstore tomorrow..否定句:______________________________一般疑问句:__________________________ 5.I am an English teacher .否定句:_______________________________一般疑问句:___________________________6.They were busy yesterday.否定句:_______________________________一般疑问句:___________________________7.I am going to visit my grandparents this weekend.否定句:_______________________________一般疑问句:___________________________8.You were happy yesterday.否定句:_______________________________一般疑问句:___________________________9.We are twins.否定句:_______________________________一般疑问句: _______________________________10.Mike was tired last weekend.否定句: ______________________________一般疑问句:_________________。