Be动词的几种形式

Be动词的几种形式与用法

be动词包括am，is，are.

一．肯定式与否定式(以人称代词为例)

肯定式否定式

I am a student.I am not a student.

He /She/It is......He /She/It is not.......

We/You/They are......We/You/They are not ......

其它。

I am a student. I am not a doctor.

She is Lucy. She is not Lily.

They are at home, They are not at school.

疑问式与简略回答

疑问式简略回答

Am I...... ?Yes, I am.

No, I am not.

Is he/ she/ it......?Yes, he/ she/ it is.

No, he/ she/ it isn’t

Are we/ you/ they......?Yes, we/ you/ they are.

No, we/ you/ they aren’ t

Are you a teacher? Yes, I am. / No, I am not.

Are you students? Yes, we are . / No, we aren’t.

Is he a worker? Yes, he is. / No, he isn’t.

缩略形式

肯定式否定式

I am→I’m I’m not.

you are →you’re you’re not. / you aren’t.

he is→he’s she is→she’s it is →it’s he’s not. / he isn’t . she’s not. / she isn’t. it’s not. / it isn’t.

we are→ we’re they are→ they’re we’re not. / we aren’t . they’re not. / they we aren’t .

You’re ten years old. You’re not our classmates.

She’s my sister. She’ not my brother.

Be动词的用法口诀：

I用am，you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。

课堂习题

用am, is, are 填空

1. Who ______ I? 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. Where _____ your mother? She ______ at home.

7. How _______ your father?

8. Mike and Liu Tao ______ at school.

9. Whose dress ______ this?

10. Whose socks ______ they?

12. Who ______ I ?

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) ____ __

4.are not(缩略形式) ____ _

5.is not (缩略形式) _____ _

6. it's(完整形式) _____

7.she's(完整形式) _____ _ 8. they're(完整形式) ___

按要求完成句子

1.His brother is a teacher.

否定句:

一般疑问句:

回答：

2.Those are his parents.

否定句:

一般疑问句:

回答：

3.I’m 14 years old.

否定句:

一般疑问句:

回答：

4.The ruler is on the desk.

否定句:

一般疑问句:

回答：

5.My shoes are 20 yuan .

否定句:

一般疑问句: 回答：

6.My name is Andy.

否定句:

一般疑问句: 回答：