They are my friends. 变否 They are beautiful.
They are not my friends. They are not beautiful.
2.含be的否定句：be+not
含be的否定句：be+not
I am a boy. I am cute.
变否
I am not a boy. I am not cute.
含be的否定句：be+not
You are my friend. You are a good girl. You are beautiful.
You are a kid. =You're a kid.
You are handsome. =You're handsome.
he/she/it is
is跟着单数和不可数名词 She is my mother.
He is my father.
It is my dog.
he/she/it is
缩写形式 ： She is my mother. He is my father. It is my dog.
Be Verbs be 动词
CONTENTS1 2来自3 4Warm up Presentation Practice Production
be 动词
01
am
表示“是”
02
is
03
are
I am
“我” 用 am I am a boy. I am cute.
I am
I am 的缩写形式： I’m I am a boy. =I'm a boy. I am cute. = I'm cute.
含be的否定句：be+not
We are students.
变否
We are in Grade One.
We are not students. We are not in Grade One.
You are good students. 变否 You are smart.
You are not good students. You are not smart.
I am a baby. =I’m a baby. I am 6 months old. =I'm 6 months old.
You are
“你”用 are
You are my friend. You are a good girl. You are beautiful.
You are
You are 缩写形式：You' re You are my friend. =You're my friend. You are a good girl. =You're a good girl. You are beautiful. =You're beautiful.
=She’s my mother. =He’s my father. =It’s my dog.
She is a teacher. =She's a teacher.
She is beautiful. =She's beautiful.
he/she/it is
He
His father is tall and strong.
人称复数（we /you /they）+ are
You are good students. You are smart.
=You're good students. =You're smart.
人称复数（we /you /they）+ are
They are my friends. They are beautiful. =They're my friends. =They're beautiful.
She
Beth is beautiful.
It
The pencil is long.
It
The dog is yellow.
It
Chip's nose is big.
可以被he she it 替代的都是第三人称单数，用is。
人称复数（we /you /they）+ are
We are students. We are in Grade One. =We're students. =We're in Grade One.
人称复数（we /you /they）+ are
简写形式:: We are =We're
You are =You're They are =They're
总结：
be 动词：am is are be 动词用法： 我用am ，你用are ，is 跟着他她它。
单数is，复数are。
练习
一．用be动词适当的词填空。 1. I ________ from Australia. 2. She _______ a student. 3.Jane and Tom _________ my friends. 4. My parents _______ very busy every day. 6.I ______ an English teacher now. 7.Where _________ you from? 10.The light _________ green.
You are not my friend. You are not a good girl. You are not beautiful.
含be的否定句：be+not
She is my mother. He is my father. It is my dog.
变否
She is not my mother. He is not my father. It is not my dog.
练习
二.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.can not(缩略形式) ______ 7.she's(完整形式) ______ 8.it's(完整形式) ______ 9.they're(完整形式) ______ 10.don't(完整形式) ______