be动词有哪些分别怎么用

1、be动词的用法包括一般形式am、is、are.主语为第一人称“我”时用am.主语为第二人称时用are.主语是单三人称时用is。第三人称单数有哪些：1. 第三人称单数代词有：he, she, it。 如： How old is she? 她多大了？ Is he at home today? 今天他在家吗？ Is it your cat? 这是你的猫吗？2. 指示代词this, that。 如：That's a Chinese car. 那是辆中国小汽车。This is my book. 这是我的书。3. 单数可数名词。如：Lucy, a cat, my book, an orange,

2、the bag等。 如： Lucy is a good girl. 露西是个好女孩。Her father is a teacher. 她爸爸是教师。4. 不可数名词可被看作第三人称单数。如： There is some money in the purse. 在钱包里有些钱。5. 当数字或字母作主语时，看作第三人称单数。 如： “6” is a lucky number. “6”是个吉利数字。“I” is a letter. “I”是个字母。6. 数字的加、减、乘、除的结果常被看作第三人称单数。如：What is one and two? 一加二等于几？ Eight minus five is

3、 three. 八减五等于三。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。 一.选择1.She _ Miss He.       A.be        B.am     &#

4、160;   C.is2.I _ sorry.            A./         B.am         C.are3.Here _ my ball.       A.is &

5、#160;      B.are        C.am4.You _ number eight.   A.are       B.is         C.am 5.What_this？      

6、    A.is         B.are       C.be6.Helen_ a student.      A.be          B.am       &#

7、160;C.is7.Those _oranges.       A.is          B.are       C.am8. How  old _your  teacher?           A.be&

8、#160;       B.am        C.is9. Where _ her mother?               A.are       B.is     

9、0;  C.am10. Eric and Kathy _ my students.      A.are       B.is        C.am11. Your books _ not good.            &#

10、160;A.is        B.are       C.be12. He _ a boy.                         A.be 

11、60;      B.am        C.is13. It _ my dog.                        A.is      

12、  B.are       C.be14.Whose socks _ they?               A.are       B.is         C.am15. _  

13、;there any chairs in the classroom. A. Is          B. Are      C. Am16 .The man with big eyes _ a teacher.   A.be          B.am    

14、0;  C.is17.How _ your father?                   A.is           B.are      C.be18.Mike and Liu Tao _ at school.

15、         A.are          B.is        C.am19.I  _    a  student.          

16、60;         A.be             B.am          C.is20. They _ teachers.           &#

17、160;         A.is             B.are         C.be21.This_my mother.             &

18、#160;          A.are            B.is          C.am22._ you a student?  Yes,I am.        &#

19、160;   A.Am             B.Is          C.Are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) _   &

20、#160;   4.are not(缩略形式) _5.is not (缩略形式) _       6.can not(缩略形式) _ 7.she's(完整形式) _         8.it's(完整形式) _ 9.they're(完整形式) _       10.don't(完整形式)

21、 _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:                                        &#

22、160;  一般疑问句:                                          2.Those are his parents.否定

23、句:                                          一般疑问句:      

24、0;                                   3.Im 14 years old.否定句:           

25、                               一般疑问句:                  

26、                         4.The ruler is on the table. 否定句:                  

27、0;                       一般疑问句:                         

28、0;                 5.Tom is my teacher .否定句:                            

29、60;             一般疑问句:                                   

30、60;      6.My shoes are 20 yuan .否定句:                                       

31、;   一般疑问句:                                          7.This is a pen .否定句:&#

32、160;                                         一般疑问句:       &#

33、160;                                  8.My name is Andy.否定句:           

34、0;                              一般疑问句:                  

35、0;                       9.We are twins.否定句:                       

36、60;                  一般疑问句:                              

37、60;           10.He is my brother.否定句:                                  

38、60;       一般疑问句:                                         

39、60;11.I am a teacher.否定句:                                          一般疑问句:   

40、;                                       12.She is my mother.否定句:       

41、;                                   一般疑问句:              

42、;                            13.This is Miss Zhao.否定句:                                  &#