小学be动词知识点

★be动词的用法

【学习目标】

1．学习并且掌握be动词am ,are ,is. 2．学会使用be动词。

3. 掌握be动词的缩写形式及读音。

任何一个句子一定由主语（Subject，简写成S）及动词（Verb，简写成V）构成。

be动词不是动作，它通常与名词、形容词或其它词类一起表示主语的性质、状态、身份、特点等等。

一、现在时be动词有三种，即：am, are,is。

★1. 如果主语是只用于第一人称I（我）时。I am 还可缩写成I'm。而am与 not 不缩写。

如：I am a student. 我是一名学生。 I am ten years old.我今年十岁。 I am not a bad boy.

★2. 如果主语是you （你，你们）, they （他们，它们，她们）或名词复数 （两个以上的人或物）时，be动词必须用are。are与主语还可缩写。如： We are= We're， They are =They're, You are = You're。而are与 not可缩写成aren't.They aren’t twins(双胞胎).

如：Are you twelve? 你是十二岁吗？

Tom and Lily are good friends. 汤姆和莉莉是好朋友。

They are at school. 他们在学校。

★3. 如果主语是单数名词(单个人名、地名、称呼)、不可数名词、或单数第三人称代词（he, she, it）时，be动词用is。

is也可与主语缩写,如: He is = He's, My mother is = My mother's等。但是This is不可缩写。而is与not可缩写成 isn't。He isn’t a teacher.他不是一名老师。 如:My mother is a teacher. 我的妈妈是一名老师。 Jane is a good girl.

Shenzhen is beautiful.深圳很美丽。

※ Be动词用法的口诀：

我用am，你用are，is用于 he(他),she(她),it(它)，

单数名词、包括不可数名词用is，we（我们）,you（你们）,they（他们）及复数（两人以上）都用are。

二、 句中含有be动词的陈述句变一般疑问句

把be动词提到句首，be动词要变大写。注意：第一人称变第二人称，回答时与其他一般疑问句一样，也用yes或no表示。结构：Yes,主语+be动词.No,主语+be+ not。 I am…变为Are you… my变为your.

例：I am a student.→Are you a student? 回答： Yes,I am. No,I am not.

That is a watch.→Is that a watch? 回答：Yes,it is.No,it isn’t. He is a good boy.→Is he a good boy?回答： Yes,he is.No,he isn’t.

知已圆明教育培训中心 英语语法<二>

There is a pen on the desk.→Is there a pen on the desk.回答：Yes,there is .No,there isn’t.

Am I right? 回答：Yes, you are. No, you are not. (No, you aren’t.)

三、 句中含有be动词的肯定陈述句变成否定句 先找肯定陈述句中的be动词，在be动词后加not. This is an apple.→This isn’t an apple.

There is a pen and two books on the desk.→There isn’t a pen and two books on the desk.

四、 特殊疑问句：结构：疑问词+一般疑问句。

认识疑问词

What 什么 Where在哪里 How many多少。。（后面加名词复数） Who 谁 When什么时候 What time 几点钟 Whose 谁的 How old 多少岁

My name is Jane.→What is your name?

It’s on the desk.→Where is my pencil-box?

四、be动词的缩写形式：

1．I’m = I am. 否定句：I am not a worker..( am not没有缩写形式)

2．It’s =It is. He’s = He is. She’s= She is. Sam’s a student. that’s= that is Who’s = Who is Where’s= Where is . What’s= What is. Sam’s = Sam is

3．You’re= You are. We’re= We are. They’re= They are. 4．there’s= there is +名词单数 there’re=there are+名词复数 5.否定：

isn’t= is not aren’t= are not （有be动词的否定句就在be动词后面直接加not） 6.

don’t= do not doesn’t= does not

hasn’t= has not haven’t= have not can’t= can not

【Practice in class】 课堂练习

be动词用法练习题

1.选择正确的be动词填空。

（1）I _____ a student. （2）We _____ friends. （3）He _____ a good boy. （4）She ______ my sister. （5）They _____ playing football. （6）You ______ my friend.

(7)____she from Jinan? No, she ____. (8) _____you friends? No, we ____.

2.be的练习：

知已圆明教育培训中心 英语语法<二>

1）I ______ a boy. ______ you a boy? No, I _____ not.

2）The girl______ Kangkang's sister. 3）______ your brother in the classroom? 4）Who ______ I? 5）The books ______ on the desk.

6）My sister's name ______Jane. 7）There ______ a girl in the room. 8）There ______ some apples on the tree.

9）There _______ a boy, two girls, three men and ten women in the park. 10)Here_______ two apples and one book. 3.

11) _____your friends in New York? 12) What ____her name?

13) These _____ buses. 14) Those _____oranges.

15) Where _____ her mother? 16) How old _____your teacher?

17) What class _____ you in? 18)This ____ my brother.

19)That ____ a pencil. 20)Mike and I____ students. 4.

21)____ there an apple on the table? Yes, there ____. 22)There____many books in the study. 23)There____some ice cream in the fridge.

24)There____a pear and some cakes on the table. 25)The children___ playing in the bedroom.

26)The rabbits___ eating grass. 27)What___ your favorite subject?

28)The girl___ drawing. 29) \"I\"___ a letter（字母.）

30. I ______ a boy. ______ you a boy? No, I _____ not. 5.

31. The girl______ Jack's sister.

32. The dog _______ tall and fat. 33. The man with big eyes _______ a teacher. 34. ______ your brother in the classroom?

35. Where _____ your mother? She ______ at home. 36. How _______ your father? 37. Mike and Liu Tao ______ at school. 38. Whose dress ______ this? 39. Whose socks ______ they?

40. That ______ my red skirt. 6.

41. Who ______ I?

42.The socks ______ on the desk. 43. Here ______ a book for you.

知已圆明教育培训中心 英语语法<二>

44. Here ______ some sweaters for you. 45. The black shoes ______ for Su Yang.

46. This pair of shoes ______ for Yang Ling. 47. The two cups of milk _____ for me.

48. Some tea ______ in the glass. 49. Gao shan's shirt _______ over there. 50. My sister's name ______Nancy. 7.

51.This ______ not Wang Fang's pencil. ______ David and Helen from England? 52. There ______ a girl in the room.

53. There ______ some apples on the tree. _______ there any kites in the classroom?

. _______ there any apple juice in the bottle? 55. There _______ some bread on the plate.

56. There _______ a boy, two girls, three men and ten women in the park. 57. You, he and I ______ from China.

三. 仿照例句改写下列句子。

例句：She is in Class One, Grade Two.

否定句： She is not in Class One, Grade Two.

一般疑问句： Is she in Class One, Grade Two? 回答：Yes, she is. (No, she isn’t) 1. Bob is on the football team. 否定句： 一般疑问句： 回答：

2. They are in the teacher’s office. 否定句： 一般疑问句： 回答：

3. It is sunny today. 否定句：

一般疑问句： 回答：

4. There is some water in the bottle. 否定句： 一般疑问句： 回答：

5. There is a piano in the room. 否定句： 一般疑问句： 回答：

6. There are many trees in the school.

知已圆明教育培训中心 英语语法<二>

否定句：

一般疑问句： 回答：

7. There are four bottles of milk on the table. 否定句： 一般疑问句： 回答：

8. We are interested in painting. 否定句：

一般疑问句： 回答：