人教新目标版英语七年级上册同步课件Unit3 sectionA 3a-3c（22张）

(共22张PPT)
Unit 3 Is this your pencil
Section A 3a-3c
1. To learn the usage of possessive pronouns
2. To learn short questions about owner.
Learning Objectives
Warm up
Look at the picture and discuss.
There are some goods at the lost and found(失物招领处).
What are they
Ask and answer some questions
with your partner to find the
owners.
Lost
Found
Presentation
含be动词的一般疑问句
Is this your pencil Yes, it is. It’s mine./No, it isn’t. It’s hers.
Is this his green pen Yes, it is./No, it isn’t. The blue pen is his.
Is that your schoolbag Yes, it is./No, it isn’t. It’s his.
Are these your books Yes, they are./No, they aren’t. They’re hers.
Are those her keys Yes, they are./No, they aren’t. They’re mine.
含be动词的一般疑问句
Grammar focus
(1)一般疑问句的用法
询问事物或某种情况是否属实，需要对方作出肯定或否定回答。
(2)含有系动词be的一般疑问句的结构
Be动词 (Am/Is/Are)＋主语＋其他？
肯定回答用“______, 主语＋be.”；
否定回答用“______, 主语＋be＋not.”。
be 和not 常用缩写形式。如：
—Is this your English book 这是你的英语书吗？
—Yes, ________ ________. /No, ________ ________.
是的，它是。/不，它不是。
Yes
No
it is
it isn't
(3)含be动词的陈述句变为一般疑问句的步骤
第一步：要将be动词提到句首，并且大写第一个字母。
第二步：原句中的第一人称一般要变为第二人称，如I改为you, my改为your。
第三步：句末的句点要变为问号。
如： This is my pencil. 这是我的铅笔。
→Is this your pencil？这是你的铅笔吗？
(4)注意：
在肯定的简略回答中，主语应由人称代词的主格充当。如：
—Is Sandy your cousin
—Yes, she is.(画线部分不能用Sandy)
(5)一般疑问句的语调
一般疑问句用升调朗读，简略答语用降调朗读。如：
—Are you a student？( )你是一名学生吗？
—Yes, I am.( )是的，我是。
[记忆口诀]
巧记含be动词的一般疑问句
我用am，你用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。
Presentation
名词性物主代词
Is this your pencil Yes, it is. It’s mine./No, it isn’t. It’s hers.
Is this his green pen Yes, it is./No, it isn’t. The blue pen is his.
Is that your schoolbag Yes, it is./No, it isn’t. It’s his.
Are these your books Yes, they are./No, they aren’t. They’re hers.
Are those her keys Yes, they are./No, they aren’t. They’re mine.
名词性物主代词相当于名词，只能单独使用，不能用于名词前，在句中可作主语、宾语或表语。
请观察下表，与形容词性物主代词相比较，你能找出名词性物主代词的构成规律吗？有哪些词比较特殊呢？
人称 类别 形容词性物主代词 名词性物主代词
第一人称 my mine
our ours
第二人称 your yours
人称 类别 形容词性物主代词 名词性物主代词
第三人称 his his
her hers
its its
their theirs
在使用名词性物主代词时要注意以下几点：
(1)名词性物主代词相当于“形容词性物主代词＋名词”。如：
My watch is red.Yours is yellow.Hers is brown. 我的手表是红色的，你的(手表)是黄色的，她的(手表)是棕色的。
(2)在使用名词性物主代词时，必须有特定的语言环境，也就是要省略的名词大家已经知道或上文提到过。
This book is mine. That book is yours.
这本书是我的，那本书是你的。
Complete the questions and answers about each picture.
3a
Is _______ your book
Are _____ my pencils
Is _______ his ruler
Are ______ his pens
Yes, it is.
No, it _______.
Yes, ______ are.
No, they aren't.
Yes, it _____.
No, it isn't.
Yes, they are.
No, they ______.
this
isn’t
these
they
that
is
those
aren’t
Read the questions and complete the answers.
3b
1. Is this her ruler Yes, _______. It’s ______.
2. Is that Eric’s schoolbag No, _______. ______ Sally’s.
3. Are these his pencils Yes, _________. They’re ______.
4. Are those Anna’s books No, __________. ________ mine.
it is
hers
it isn’t
It’s
they are
his
they aren’t
They’re
3c
Put some things into the teacher’s box. Then take one thing out of the box and find the owner. You only have two guesses!
Is this your eraser
No, it isn’t.
1．—Are these pens ________ (your)
—Yes, they are ________ (I)．
2．—Is this ________ (you) watch
—No. It's not ________ (I)．It's ________ (he)．
3．These maps are ________ (she)．
4．_______ pen is not here. ________ is at home(在家). (he)
5．—Are these ________ (she) books
Exercise
用括号内所给单词的适当形式填空
mine
your
mine
his
hers
His
His
her
yours
6．This is ________ (I) good friend.________ (she) name is Julie.
7．That's not ________ (he) pencil. It's ________ (she)．
8．—Is the white eraser ________ (you)
—No, it isn't. ________ (I) is black.
9．The brown schoolbag is ________ (Bob)．________ (he) likes it very much.
10．Excuse ________ (I), are these ________ (you) keys
my
Her
his
hers
yours
Mine
Bob's
He
me
your
Summary
Summary
GOOD JOB