Unit 3 Is this your pencil？Section A Grammar Focus - 3c 课件(共33张PPT)

(共33张PPT)
Section A Grammar Focus - 3c
Unit 3 Is this your pencil
— Is this ______ (you) ruler
— Yes, ____ ____.
your
it is
Review
— Is this ____ (she) book
— No, ___ _____. This is ______ (you) book.
her
it isn’t
your
— Is _____ ____ (he) book
— _____, it is.
this
his
Yes
Grammar Focus
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.
Attention!
it’s ＝ it is
isn’t＝is not
aren’t＝are not
Language points
一、含有动词be的一般疑问句
【观察领悟】
　　仔细观察例句，体会含有动词be的一般疑问句及其回答。
1. Is this a map 这是一张地图吗？
2. Are you a student 你是一名学生吗？
3. —Is that a plane 那是一架飞机吗？
—Yes, it is. 是的，它是。
4. —Is this your watch 这是你的手表吗？
—No, it isn’t. 不，它不是。
5. —Are you a doctor 你是名医生吗？
—No, I’m not. 不，我不是。
【句型剖析】
(1)一般疑问句的概念：能用yes或 no回答的问句
就叫一般疑问句。
(2)含有be动词的陈述句变一般疑问句的方法：
※将be动词提至句首
※将句末标点改为问号
※将第一人称变为第二人称，即 I 由 you替换；
my 由 your 替换；相应地 am 也变为 are.
简单归纳即为：一提二变三替换。
*Mary is an English girl.
一般疑问句是：Is Mary an English girl
*I am in my classroom.
一般疑问句是：Are you in your classroom
(3)含有be动词的一般疑问句的回答方式：
①肯定回答：Yes, 主语+ be (am,is are). 其中，
be动词不能与主语缩写。
②否定回答：No, 主语+ be (am, is, are)+not. 其
中 be可以与 not 缩写，但 am不能与 not 缩写。
如：— Is this an ID card — Yes, it is.
— Are you Mr. Smith — No, I’m not.
(4)一般疑问句的语调：读一般疑问句用升调 ↑，
其简略回答用降调 ↓。
【温馨提示】
　　疑问句的主语是第一人称，回答时主语要换成第二人称；疑问句的主语是第二人称，回答时主语要换成第一人称； 疑问句是第三人称，回答时主语不变。
— Am I right 我是对的吗？
— Yes, you are. 是的，你是对的。
/No, you aren’t. 不，你不对。
— Are you Alan 你是艾伦吗？
— Yes, I am. 是的，我是。
/No, I’m not. 不，我不是。
【学以致用】
用be动词的适当形式填空。
1. — How are you
— I 　　 OK, thanks.
2. Oh, this black pen 　　 Peter’s.
3. — Who is the woman
— She 　　 our English teacher.
4. Bob’s two aunts 　　 on the sofa. 　
am
is
is
are
5. Jerry and Loe 　　 students at Sunshine
Middle School.
6. — 　　 the black pen yours
— Yes, it’s mine.
7. These 　　 my friends, Bob and Cindy.
8. — Who 　　 the boy in the photo
— He’s my cousin, Li Lei.
are
Is
are
is
二、物主代词
【观察领悟】
　　仔细观察例句，体会形容词性物主代词与名词性物主代词的用法不同。
1. — Is this your pencil
— Yes, it is. It’s mine.
2. — Is this his green pen
— No, it isn’t. The blue pen is his.
3. — Are these your books
— No, they aren’t. They’re hers.
【知识构建】
表示所有关系的代词叫做物主代词 (Possessive Pronouns)， 也叫人称代词的所有格。物主代词分为形容词性物主代词和名词性物主代词两种。物主代词有人称和数的变化。人称代词与其对应的物主代词见下表：
人　称 形容词性物主代词 名词性物主代词
I my (我的) mine (我的)
you your (你的) yours (你的)
he his (他的) his (他的)
she her (她的) hers (她的)
it its (它的) its (它的)
we our (我们的) ours (我们的)
you your (你们的) yours (你们的)
they their (他/她/它们的) theirs (他/她/它们的)
【学以致用】
用所给词的适当形式填空。
1. Alice and Bill are 　　 (I) good friends.
2. These books are 　　 (I).
3. The girl is Ann and this is 　　 (she) mother.
4. This book is 　　 (she).
5. 　　 (her) is Susan, my sister.
my
mine
her
hers
She
3a
Complete the questions and answers about each picture.
Is _______ your book Yes, it is.
No, it ________.
Are _______ my pencils Yes, _______ are.
No, they aren’t.
Is _______ his ruler Yes, it ________.
No, it isn’t.
Are _______ her pens Yes, they are.
No, they _______.
this
isn’t
these
they
that
is
those
aren’t
not和no的区别：
(1) not 用于构成否定形式，置于句中，常放在be动词、情态动词can等助动词do的后面，可与前面的词缩成一个词，但不能独立使用。
如：This is not (isn’t) a pen.
I can not (can’t) come.
I do not (don’t) know.
Language points
(2) no 常用于带冠词(a, an, the)的名词前，主要修饰可数名词，此时，既可放在单数名词前，也可放在复数名词前。在no+名词的结构中，名词前不能加any, much等词。
It has no tail.它没有尾巴。
Tom has no books.汤姆没有书。
There is no water now.现在没有水。
1. Is this her ruler
2. Is that Eric’s schoolbag
Yes, _______.
It’s ________.
No, _________.
______ Sally’s.
it is
hers
it isn’t
It is
3b
Read the questions and complete the answers.
3. Are these his pencils
4. Are those Anna’s books
Yes, _________.
They’re ________.
No, ____________.
_________ mine.
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.
Find the Owner!
A: Is this your…
B: Yes, it is./
No, it isn’t.
Game
Is this your
eraser
No, it
isn’t.
Is this your
ruler
Yes, it is.
单项选择
1. — Is this your pencil
— Yes, 　　　.
A. it’s　　B. it is　 C. its　　D. is it
2. — Is that Alice’s dictionary
— Yes, it’s　　　.
A. his B. hers C. mine D. yours
Exercise
3. — Are those Tom’s pens
— No, 　　　 aren’t.
A. these　B. those　C. it　D. they
4. This isn’t 　　　 book. It’s 　　　.
A. my; her　　　　 B. my; hers
C. mine; her　　　　 D. mine; hers
5. Thank you 　　　 your photos.
A. at　 B. for　 C. of　 D. to
句型转换
1. That is his schoolbag. (变为一般疑问句)
_____ _____ his schoolbag (作肯定及否定回答)
Yes, _____ _____. / No, _____ _____.
2. These are her erasers. (变为一般疑问句)
______ _____ her erasers (作肯定及否定回答)
Yes, _____ ____. / No, ____ _______.
Is that
they are
it isn’t
it is
Are these
they aren’t
3. This is her green jacket. (改为同义句)
This green jacket is _____.
4. My pen is red. What color is your pen (同义句)
My pen is red. What color is ________
5. This is his blue ruler. (改为同义句)
This blue ruler is _____.
6. Your pen is red, my pen is red, too.(同义句)
Your pen is red, ______ is red, too.
hers
yours
his
mine
补全对话, 每空一词
A: 　1　 me, Mary. 　2　 these your pencils
B: 　3　, they are Helen’s.
A: And 　4　 this her eraser
B: No, it 　5　. It’s Dale’s.
A: What 　6　 this ruler
B: It’s Cindy’s. And the pen is 　7　, too.
A: And the dictionary Is that yours
B: Yes, it’s 　8　.
A: Thank you 　9　 your help, Mary.
B: You’re 　10　.
1. ________ 2. ______　 3. ______　　　　　　　
4. ________ 　 5. ______ 6. ______　　　
7. ________　 8. ______　 9. ______　
10. _______
Excuse
Are
No
is
isn’t
about
hers
mine
for
welcome