【四年级上册】专题一：Be动词的用法

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。 不可数名词还是用is.

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。

Be基本知识。

1. 一般现在时中有is，are

2. 一般过去时中，be动词的形式有：was 、were ； 第三人称、单数名词对应的be动词为：was ； 复数人称对应的be动词为：were 。

3. 第一、二、三人称对应的be动词一般现在式和过去式：

4.句型转换：

1)变否定：直接在be动词后加not，

即：am not is not=isn’t was not=wasn’t

are not =aren’t were not=weren’t

2)变疑问：be动词提到句子最前面，即主语前面。 Eg1. -- Was you bother at school？

-- Yes,he was./No,he wasn’t =No,he was not. Eg2.-- It is windy in Beijing(改为一般疑问句) Is it windy in Beijing?

知识延展：

一般过去式：描述过去的事情或者状态。 一般现在时：描述现在的状态 句型：主语+be动词+其它

Eg1.一般过去时

He wasn’t at school yesterday. Eg2.一般现在时 The sky is blue.

Be动词的用法练习

一、在下面的短文中填上恰当be动词。

I ______ a girl. My name _______ Mary. I ______ 12 years old. Here ______ my family photo. Look! These ______ my parents and those _______ my grandparents. This boy ______ my brother. He ________ 15 years old now. That ______ my cat, Mimi. It ______ very lovely.

二、在下面的题目中填上恰当的Be动词。 1. I ________ Kitty. 2. She _______ a student.

3. Jane and Tom _________my friends. 4. My sisters _______ tall.

5. _______ there a table in the room? 6. There _____ some glasses on it.

7. There ________many monkeys in the zoo. 8. There_________ a beautiful rainbow in the sky. 9. I _______ at school now. 10. We ________ students. 11. They ________ in the zoo. 12. Yang Ling ________ ten years old. 13. There ________ an apple on the plate. 14. There ________ some milk in the glass 15. The cat _______ on the chair. 16. Where ________ your friends? 17. How old __________ you? 18. ____she Kitty? 19. _____ you Chinese? 20. He _____ in Shanghai. 21.It_____ a car. 22.They ____ car.

23.____ your mother in the room? 24. _____your friends in the room? 25. What ____ your name? 26. Where _____ your mother?

三、照样子改写句子

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）Whose socks ______ they? . 10）Who ______ I?

11）The jeans ______ on the desk. 12）Here ______ a scarf for you.

13）Here ______ some sweaters for you. 14）The black gloves ______ for Su Yang.

15）This pair of gloves ______ for Yang Ling. 16）The two cups of milk _____ for me. 17）Some tea ______ in the glass.

18）Gao Shan's shirt _______ over there. 19）My sister's name ______Nancy.

20）______ David and Helen from England? 21）There ______ a girl in the room.

22）There ______ some apples on the tree.

23）_______ there any apple juice in the bottle? 24）There _______ some bread on the plate. 25）You, he and I ______ from China.

26）There _______ a boy, two girls, three men and ten women in the park.

四、用be动词的适当形式填空

1. I _______ at school just now.

2. He ________ at the hotel last week. 3. We ________ students two years ago. 4. They ________ on the farm a moment ago.

5. Yang Ling ________ eleven years old last year. 6. There ________ an apple on the plate yesterday. 7. I ______ an English teacher now. 8. She _______ happy last night.

9. They _______ glad to see each other last month. 10. Helen and Nancy ________ good friends.

11. The little dog _____ two years old this year. 12. Look, there ________ lots of grapes here.

13. There ________ a sign on the chair last Monday.

五、句型转换：

1. They are doing housework .(分别改成一般疑问句)

____________________________________________________________ ____________________________________________________________

2．The students are cleaning the classroom . ( 改一般疑问句并作肯定和否定回答) ____________________________________________________________ ____________________________________________________________ ____________________________________________________________

3.Tom is under the tree.（变为否定句）

____________________________________________________________ ____________________________________________________________ 4.It is windy in Beijing.（变一般疑问句并作肯定回答）

____________________________________________________________

____________________________________________________________ ____________________________________________________________

5.These apples are red.(改成否定句)

____________________________________________________________ ____________________________________________________________ 6.He was in the classroom.(对画线部分提问)

____________________________________________________________ ____________________________________________________________