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Be 动词
今天给大家讲解的是be动词,你知道什么是be动词吗?它又有哪些形式呢?
be动词的三种基本形式为:am, is, are。
be 动词的用法:一般来说be动词要根据主词的人称来选择。(如下表)
第一人称
单数(I):am
I am a boy. 我是一个男孩。
I am not a boy. 我不是一个男孩。
Are you a boy? Yes, I am./ No, I am not.
你是一个男孩吗?是的,我是。/不,我不是。
复数 (we): are
We are Chinese. 我们是中国人。
We are not Chinese. 我们不是中国人。
Are you Chinese? Yes, we are./ No, we aren't.你们是中国人吗? 是的,我们是。/ 不,我们不是。
第二人称
单数(you你):are
You are a girl. 你是一个女孩。
You are not a girl. 你不是一个女孩。
Are you a girl? Yes, I am. / No, I am not.
你是一个女孩吗?是的,我是。/不,我不是。
复数 ( you你们 ): are
You are very young. 你们非常年轻。
You are not very young. 你们不是很年轻。
Are you very young? Yes, we are./ No, we aren't.
第三人称
单数(he/she/it):is
She is in China. 她在中国。
She is not in China. 她不在中国。
Is she in China? Yes, she is. / No, she isn't.
她在中国吗? 是的,她在。/ 不,她不在。
复数 (they): are
They are very sad. 他们很伤心。
They are not very sad. 他们不是很伤心。
Are they very sad? Yes, they are./ No, they aren't.他们很伤心吗? 是的,他们很伤心。/ 不,他们不伤心。
温馨提示:
be动词前面的人称,是不可随意替换的。例如:I am, You are, She is,并不会出现I is, You am, She are 这样的情形.
Be动词的用法口诀:
我(I)用am,你(you)用are, is连着他(he),她(she),它(it);
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
一、用am, is, are 填空
1) I _____ a student.
2) You ____ a doctor.
3) ____she from Jinan?
4) _____ you American?
5) He _____ in Class 4, Grade 1.
6) It_____ a car.
7) They ____ cars
8) ____ your mother in China?
9) _____your friends in New York?
10) What ____her name?
11) These _____ buses.
12) Those _____oranges.
13) Where _____ her mother?
14) How old _____your teacher?
15) What class _____ you in?
二、模仿
Eg. That is a book.
否定句:That is not a book.
疑问句:Is that a book?
回答: Yes, it is. / No, it isn’t.
1. This is a coat.
否定句:
疑问句:
回答:
2. I am a student.
否定句:
疑问句:
回答:
3. You are a star.
否定句:
疑问句:
回答:
4. These are apples.
否定句:
疑问句:
回答:
三、在下面的短文中填上恰当be动词。
I ______ a girl. My name _______ Mary. I ______ in Class 2, Grade 7. 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.
练习二
一、在下面的题目中填上恰当的Be动词。
1. I ________from Australia.
2. She _______ a student.
3. Jane and Tom _________my friends.
4. My parents _______very busy every day。
5. I ______ a boy. ______ you a boy? No, I _____ not.
6. The girl______ Jack’s sister.
8. The dog _______ tall and fat.
9. The man with big eyes _______ a teacher.
10. ______ your brother in the classroom?
11. Where _____ your mother? She ______ at home.
12. How _______ your father?
13. Mike and Liu Tao ______ at school.
14. Whose dress ______ this?
15. Whose socks ______ they?
16. That ______ my red skirt.
17. Who ______ I?
18.The jeans ______ on the desk.
19. Here ______ some sweaters for you.
20. The black gloves ______ for Su Yang.
21. This pair of gloves ______ for Yang Ling.
22. Where____the bag? It ____ on the table.
Where ____the bags? They ____on the table.
23. Where _____your pen? It ____under the sofa.
Where_____your pens? They ____under the sofa.
24. Where _____her backpacks? They _____on the chair.
Where_____her backpack? It ____on the chair.
二、用BE动词的正确形式完成下列句子。
1. I _______________ a student. 6. You __________ students.
2. She _____________ a student. 7. We __________ students.
3. He ______________ a student. 8. You and I __________ students.
4. It _______________ a country. 9. They ________________ students.
5. You _____________ a student. 10. Jim and Tom __________ in America.
三、英语陈述句变一般疑问句和否定句,和一般疑问句回答。
1. I'm in Class five.
否定句:__________________
一般疑问句:________________
回答:________________
2. The man is a doctor.
否定句:_______________
一般疑问句:___________________
回答:____________________
3. They are my friends.
否定句:___________________
一般疑问句:________________________
回答:____________________
4. His shoes are black.
否定句: ___________________________
一般疑问句: __________________________
回答______________________
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