be 动词专练be 动词用法歌：我用am,你用are，is 连接他，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。
解析: I am; You are; He is; She is; It is; We are; You are; They are.用am, is, are 填空1. I ______ a boy. ______ you a boy?2. The girl______ Jack's sister.3. The dog _______ tall and fat.4. The man with big eyes _______ a teacher.5. ______ your brother in the classroom?6. Where _____ your mother?7. How _______ your father?8. Mike and Liu Tao ______ at school.9. That ______ my red skirt.10.The jeans ______ on the desk.11. Some tea ______ in the glass.12. Gao Shan's shirt _______ over there.13. My sister's name ______Nancy.14._____you American?15. He _____ in Class 4, Grade 1.16.It_____ a car. 28. They ____ cars .17. ____ your mother in China?18. What ____her name?19.Those _____oranges.20. Where _____ her mother?21. How old _____your teacher?22.What class _____ you in?23. ______ your brother in the classroom?含be动词的否定句和一般疑问句【练习】按要求完成下列各题。
1. She is my sister. (改为否定句)________________________________2. These are my books. (改为否定句)________________________________3. That is Anna’s eraser. (改为一般疑问句)________________________________4. They are my parents. (改为一般疑问句)________________________________5. I am Jane. (改为一般疑问句)________________________________【总结】含be动词的否定句和一般疑问句都是在肯定句的基础上变换而来的。
【否定句】变否定句时，在be动词(am, is, are)后面加否定词not即可。
如：I’m Linda. → I’m not Linda.Her name is Jane. → Her na me is not / isn’t Jane.【一般疑问句】变一般疑问句时，把be动词(am, is, are) 提到句首，首字母大写，句末加问号。
肯定回答用Yes，否定回答用No。
如：Tom is my cousin. → Is Tom your cousin?【特别提醒】I’m …变一般疑问句时，通常为Are you …?主谓一致法练习在一般现在时中，当主语是第三人称单数时，谓语动词要用第三人称单数形式，即常在动词原形后加-s或-es。
但有些同学们对于哪些主语是第三人称单数还不十分清楚，现归纳总结如下：一、人称代词he, she, it是第三人称单数。
如：He likes watching TV. 他喜欢看电视。
She has lunch at twelve. 她十二点吃午餐。
It looks like a cat. 它看起来像只猫。
二、单个人名、地名或称呼作主语；是第三人称单数。
如：①Han Mei looks like her mother. 韩梅看起来像她的母亲。
②Beijing is in China. 北京在中国。
③Uncle Wang often makes cakes. 王叔叔经常做蛋糕。
三、单数可数名词或"this / that / the+单数可数名词"作主语时，是第三人称单数。
如：①A horse is a useful animal. 马是有用的动物。
②This book is yours. 这本书是你的。
③That car is red. 那辆小汽车是红色的。
④The cat is Lucy's. 这只猫是露茜的。
四、不定代词someone, somebody, nobody, everything, something等及指示代词this, that作主语时，是第三人称单数。
如：①Everyone is here. 大家到齐了。
②There is something wrong with the watch. 这块手表有毛病。
③This is a pen. 这是一支钢笔。
④That is an eraser. 那是一块橡皮擦。
五、不可数名词作主语时为第三人称单数。
如：①The milk is in the glass. 牛奶在玻璃杯里。
②The bread is very small. 那面包很小。
六、当数字或字母作主语时，看作第三人称单数。
如：①"6" is a lucky number. "6"是个吉利数字。
②"I" is a letter. "I"是个字母。
巩固练习题：I.写出下列动词的相应形式：1. 第三人称单数：watch_________ listen _______ guess______ study______do_________ go________ like ______ carry_________II. 用所给动词的适当形式填空：1．I ________(write) to my sister every week.2. ______ Jerry ___________(do) homework every day?3. Grandpa ________(like)__________(play) chess.4. Tom’s family__________(watch) TV every night.5. It ________(take) me two hours to finish my homework.6. What ______ your mother usually _______(do) in the evening? She usually _______ (wash) clothes.7. There ________ (be) a football match on TV this evening.8. I _________ (know) the boy.9. They __________(go) to work on Saturdays.10. He usually _____________(come) to school early.11. I often _____________(have) rice, meat and vegetables.12. My grandfather _____________(play) sports in the park.13. Miss Li ____________(teach) English in our school.14. Alicia and Jerry ______________ (do) homework after school.15. Her sister ____________(have) Chinese every day.单数句变复数句，复数句变单数句1．It is a bus._______________________________________2．This is my sister._________________________________3．He is his friend .__________________________________4．That is her dictionary.______________________________5．Those are boxes._______________________________6．They are teachers.________________________________7．These are desks .________________________________8．We are boys. _____________________________名词所有格的构成及用法名词在句中表示所有关系、所属关系、动作执行者及动作承受者等意义时常需用所有格形式。
名词所有格也称为属格、主格，它主要包括's所有格、of所有格和双重所有格三种表现形式。
定义：表示有生命的东西的名词及某些表示时间、距离、星球、世界、国家等无生命的东西的名词后加’s来表示所有关系，叫做名词所有格。
名词所有格的用法：一、名词+ ’s （主要用于有生命的事物）1、单数名词和不以-s结尾的复数名词在词尾加’s构成所有格例如：Jimmy’s book（吉米的书）Jane’s schoolbag（简的书包）Mark’s room （马克的房间）Qianqian’s mother （倩倩的妈妈）Children’s Day(儿童的节日、六一儿童节)Wuhan’s summer is very hot.(武汉的夏天非常热。
)Qianqian ’s math is very good.(倩倩的数学很好。
)2、复数名词以-s结尾的只需要加’构成所有格。
例如：Twins’ father is Mr. Brown. (双胞胎的爸爸是布朗先生。
)Girls’ favorite food is ice-cream. (女孩们最喜欢的食物是冰激凌。