be动词的用法
常见的be 动词形式：am is are
口诀: 我(I)用am,你,你们(you)用are, is 跟着他( he ) ,她( she ) ,它( it )
单数is例如：This is a pen. The boy is very lovely.
复数are 例如：We are students. They are in the park. The girls are from England.
be 动词的否定形式：am not, is not= isn’t, are not= aren’t
含有be动词的陈述句变为否定句：在be动词后面加not
含有be动词的陈述句变为一般疑问句：将be动词提到句首。
例如：
He is a good boy. Is he a good boy?
They are in the school. Are they in the school?
This is a book. Is this a book?
The man is a doctor. Is the man a doctor.
注意：I am/ we are 变疑问句时要换成are you.
I am hungry. Are you hungry?
We are good friends. Are you good friends?
练一练：
一、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.
二、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 _______ at school.
6. He ________ at school.
7. We ________ students.
8. They ________ from China.
9. Yang Ling ________ eleven years old.
10. Where ________ your friends?
11. How old __________ you last year?
12. Which dog ________ yours?
13. Ten and two ________ twelve.
14. I _____ a student.
15. You ____ a doctor.
16. ____she from Jinan?
17. _____you American?
18. Those _____oranges.
19. They ____ cars
20. ____ your mother in China?
21. _____your friends in New York?
22. What ____her name?
23.Where _____ her mother?
24. How old _____your teacher?
25. What class _____ you in?
三、句型转换
模仿
Eg. That is a book.
否定句：That is not a book.
一般疑问句：Is that a book？
回答：Yes, it is. / No, it isn’t.
1. This is a coat.
否定句：
一般疑问句：
回答：
2. I am a student.
否定句：
一般疑问句：
回答：
3. You are a star.
否定句：
一般疑问句：
回答：
4. These are apples.
否定句：
一般疑问句：
回答：
5. It is a beautiful flower.
否定句：
一般疑问句：
回答：
6. They are playing football.
否定句：
一般疑问句：
回答：
7. The man is in the bedroom.
否定句：
一般疑问句：
回答：
8. His uncle is leaving for Beijing.
否定句：
一般疑问句：
回答：
9. My mother is a teacher.
否定句：
一般疑问句：
回答：
