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语法——动词之Be动词
Part 1:知识点
动词：主要表示动作，其次表示状态或性质，有时态、语态、语气等形式的变化。
小学阶段主要涉及be动词、助动词、实意动词和情态动词等。
具体用法：
be动词
Be动词有3个：am is are
用法口诀：我用am，你用are，is连着她他它，复数全用are。
例句：I am a student.
You are a teacher.
She is a girl.
He is a boy.
It is a doll.
They are good friends.
be动词的否定形式：be动词后面直接加not
am not（无缩写形式）
is not=isn’t
are not=aren’t
be动词的过去形式
am--was is--was are--were
否定句：在be动词后直接加not
例句：Her sister is a player.
（否定句）Her sister is not(isn’t) a player.
一般疑问句：Be动词提前放到句首，注意首字母要大写。
例句：They are Sarah’s parents.
(一般疑问句）Are they Sarah’s parents
肯定回答：Yes, they are.
否定回答：No, they are not(aren’t).
Part 2:练习
一、用be动词的适当形式填空。
I ______ from America.
She ______ an Engliash teacher.
Joe and Sally ______ her good friends.
My brothers ______ very busy.
He ______ a football player now.
Where ______ you from
The light ______ red.
His name ______ Danny.
The cat______ fat and cute.
______ they your students
He ______ very good at English.
My father and I ______ going to Beijing next month.
______ you on duty the day before yesterday
Mr. King ______in London two weeks ago.
There ______ many kinds of animals in the zoo.
What ______ the date yesterday
Look！A little girl ______ flying a kite.
Who ______ not at school ;ast Monday
Have you ever ______ to Japna
I ______ not a nurse. I work as a doctor.
二、写出适当形式。
1.I am（缩略形式）_____________
2.we are（缩略形式）_____________
3.is not（缩略形式）_____________
4.are not（缩略形式）_____________
5.she’s（完整形式）_____________
6.they’re（完整形式）_____________
7.it’s（完整形式）_____________
8.is（复数形式）_____________
9.is/am（过去式）_____________
10.are（过去式）_____________
三、将下列句子变为否定句和一般疑问句，并做出肯定回答和否定回答。
1.They are his parents.
否定句：_______________________________________
一般疑问句：___________________________________
肯定回答：______________________________________
否定回答：______________________________________
I was busy last weekend.
否定句：_______________________________________
一般疑问句：___________________________________
肯定回答：______________________________________
否定回答：______________________________________
Lily is gong to bookstore tomorrow.
否定句：_______________________________________
一般疑问句：___________________________________
肯定回答：______________________________________
否定回答：______________________________________
答案：
一、1.am 2.is 3.are 4.are 5.is 6.are 7.is 8.is 9.is 10.Are 11.is 12.are 13.Were 14.was 15.are 16.was 17.is 18.was 19.been 20.am
二、1.I’m 2.we’re 3.isn’t 4.aren’t 5.she is 6.they are 7.it is 8.are 9.was 10.were
三、1.They are not his parents.
Are they his parents
Yes, they are.
No, they aren’t.
I was not vusy last weekend.
Were you busy last weekend
Yes, I was.
No, I wasn’t./No, I was not.
Lily is not going to the bookstore tomorrow.
Is lily going to the bookstore tomorrow.
Yes, she is.
No, she isn’t.

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