一课时：1、基本形式：am、are、is
（1） am
第一人称I+am (注意：“I”无论何时都要大写，不管位于句首还是句中)
例：I am a beautiful girl. I am twenty.
（2） are
第二人称you+are; 一人称复数we+are； 三人称复数they+are 其他复数名词+are (注意：第二人称单复数同形，都为you)
例：You are my good friend. We are in the same class.
They are on the road. The books are on the desk.
(3 is
第三人称he(男) +is ; she(女)+is; it(不是人)+is;其他单数名词+is
例：He\She is a good student. It is a white cat.
A dog is on that street.

2、肯定、否定、疑问（等于号后是简写）
肯定 否定——be动词后加not 一般疑问——be动词移到主语前 一般疑问否定 一般疑问回答 肯定和否定
I am… =I’m …. I am not…=I’m not ... Am I…? Am not I…? Yes,I’m.
No,I’m not.
You are…= you’re… You are not…=You aren’t… Are you…? Are not you. ..? =Aren’t you…? Yes,you are.
No,you are not.
She\He\It is…= She\He\It is not… =She\He\It isn’t… Is she\he\it…? Is not she\he\it…? =Isn’t she\he\it…? Yes,she\he\It is.
No,she\he\It is not.
We are=We’re We are not…=We aren’t… Are we…? Are not we…?
=Aren’t we…? Yes,we are.
No,we are not.
They are=They’re They are not…=They aren’t Are they…? Are not they…?
=Aren’t they…? Yes,they are.
No,they are not.
例：I am(not) from London.
My eyes are(not) small.
My hair is(not) long.
Am I a Chniese? 回答： 肯定：Yes, you are. 否定： No, you aren’t.

Is the cat fat? 回答：肯定：Yes, it is. 否定： No, it isn’t.
注意：在一般疑问回答中，肯定回答除I’m不可简写,否定回答均可简写。

另：特殊疑问句中：where\how\who\what\why+be动词+人称代词或名词？
例：What is your name? My name is GaoBuHan.
Where are you? I’m in the classroom.
3．总结：Be的用法口诀
I用am；you、we、they 都 用are；is连着he，she，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 。