Be动词的讲解

来源：化拓教育网

Be动词用法及综合练习

一．基本形式： am， is ， are 二．定义：

1. 是（表状态）（打开书本P77-P78，找出一下意思的句子） Ex: A. I am very happy. B．They are our friends. 2. 在（表存在，位置） Ex：A. The book is on the desk. B.She is at home.

三．主词+Be动词一般来说be动词要根据主词的人称来选择，如；

第一人称单数（I）：am 复数（We）:are I am a boy. We are students. You are girl. You are young. He is right. 第二人称单数（you 你）：are 复数（you 你们）：are 第三人称单数（she、he、it）：is 复数（they）：are They are coming. 四．Be动词的否定

1.含be动词（am、is、are）的肯定句在be动词后加not，即变成否定句的格式：肯:主词+am/is/are+…… 否:主词+am/is/are+not…… Ex: 肯:He is a good father. 否：He is not a good father. 练习1.She is a bad girl. (写出否定句) 2. It is a dog.

3. be动词可以跟not缩写在一起

is not=isn’t are not=aren’t （注意：am not一般不缩写） Ex：He is not a good football player. = He isn’t a good football player.

练习 1.They are not a hard-working boys. （写出它的缩写句） 2.She is not good at dancing. 五．Be动词的疑问句：

1.在谓语是be动词的句子中，将be动词移到主词前，句尾加“？”，即可构成疑问句格式：

肯：主词+am/is/are+…… 疑：Am/Is/Are+主词+…… Ex：肯;It is my pen. 疑：Is it my pen？

练习 1.She is my sister. （写出它的疑问句）

2.He is a handsome boy.

2.be动词开头的一般疑问句，可用Yes或No 回答，而答句中的主词需要用代名词（I/She/He/They/We等）代替. 格式：肯：Yes，主词+am/are/is. 否：No,主词+am/are/is+not. Ex： Is that man your friend？答：Yes,he is/No,he is not. 练习：1.Is he your handsome father

肯定回答：____________________________________________ 否定回答: ____________________________________________ 2.Are you happy？

肯定回答：____________________________________________ 否定回答: ____________________________________________ 特殊疑问句：疑问词5个W：、Who、Where、When 、What 、Why How+be（am，is，are）+其他

Be动词的用法口诀 : 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。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。练习

一.练习题：用be(is, am,are)动词的适当形式填空 1）I ______ a boy. ______ you a boy No, I _____ not.

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）How _______ your father 7）Mike and Liu Tao ______ at school. 8）Whose dress ______ this 9)The jeans ______ on the desk 10)Here ______ a scarf for you. 练习二：

1. Mr. Cow likes to eat grass. He ______ very strong. 2. I _____ fat. I ______ tall.

3. Who _______ your sister Jenny __________. 4. ______ you Mr. Birdie Yes, I ______. 5. How ________ Linda’s Spotty He’s fine. 6. My pet ____ a smart monkey.

7. How many people ______ there in your family 8. ______ you in the classroom Yes, I ________.

9. Who _______ this man in the photo It _____ your father. 10. Bob and Lily ______ my classmates.

14)请在这些代词后面填上相应的be动词形式： I _______ you _______ she _______ he _______ it _______ they _______ Jim

_______ Tony and Marry _______ Gina _______ The dog _______ My ruler _______ Your pen ___ 二.选择

1.She ______ Miss Hen. A.be B.am C.is 2.I ______ sorry. A./ B.am C.are 3.Here ______ my ball. A.is B.are C.am 4.You ______ number eight. A.are B.is C.am 5.What_______this？ A.is B.are C.be 6.Helen____ a student. A.be B.am C.is 7.Those _____oranges. A.is B.are C.am 8. How old _____your teacher A.be B.am C.is 9. Where __ ___ her mother A.are B.is C.am 10.The two cups of milk _____ for me. A.is B.are C.be 11. Eric and Kathy ____ my students. A.are B.is C.am 12. Your books ____ not good. A.is B.are C.be 13. He ___ a boy. A.be B.am C.is 14. It ___ my dog. A.is B.are C.be 15.Whose socks ______ they A.are B.is C.am 三.写出下列词适当形式:

1.is (复数)______ 2.we are (缩略形式) ______ 3.are not(缩略形式) ______ 4.is not (缩略形式) ______ 5.can not(缩略形式) ______6.she's(完整形式) ______ 7.it's(完整形式) ______ 8.they're(完整形式) ______ 9.don't(完整形式) ______

改句练习卷（一）

把下列句子改成否定句和一般疑问句并作肯定或否定回答。 1. This is the reading room.

否定句：_______________________________________________ 一般疑问句： ____________________________________________ 肯定回答：____________________________________________ 否定回答：____________________________________________ 2. She’s Miss Lynn.

否定句：__________________________________________ 一般疑问句： _______________________________________ 肯定回答：____________________________________________ 否定回答：____________________________________________ 3. I am in Grade 3.

否定句：_______________________________ 一般疑问句： ____________________________

肯定回答：____________________________________________ 否定回答：____________________________________________

5. We are teachers.

否定句：_______________________________ 一般疑问句： ____________________________

肯定回答：____________________________________________ 否定回答：____________________________________________ 6. These are pears.

否定句：_______________________________ 一般疑问句： ____________________________

肯定回答：____________________________________________ 否定回答：____________________________________________ 7. It is a nice pen.

否定句：___________________________________________ 一般疑问句： ________________________________________ 肯定回答：____________________________________________ 否定回答：____________________________________________ 8.We are good at drawin pictures.

否定句：___________________________________________

一般疑问句： ________________________________________ 肯定回答：____________________________________________ 否定回答：____________________________________________ 10. My sister is friendly.

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