Unit 3 Is this your pencil? Section A (Grammar Focus-3c)课件(共15张PPT)

(共15张PPT)
七年级英语上（RJ）
教学课件
人教版七上英语
Unit 3
Section A (Grammar Focus-3c)
Is this/that…
Yes, it is. No, it isn’t.
Are these/those…
Yes, they are. No, they aren’t.
Let’s observe1
含有be动词的一般疑问句
Let’s learn1
定义 一般疑问句用来询问某事物或情况是否属实需要对方作出肯定或否定回答。
结构 Be动词(Am, Is, Are)+主语+其他部分？
肯定回答 Yes,主语+be动词.
否定回答 No,主语+be动词+not.
This
is
my
pencil.
Is
this
your
pencil
含有be动词的陈述句变为一般疑问句的步骤
第一步调：要将be动词提到句首，并大写第一个字母。第二步改：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。第三步变：句末的句点要变为问号。
2.常见结构的回答
Ask(问) Answer(答)（只能用人称代词来代替）
Am I... Yes, I am. ’m not.
Is he/she/单数名词（人）... Yes, he/she is. ’t.
Is this/that/it/ 单数名词（物）...？ Yes,it is.No, it isn’t.
Are you... Yes, I am. ’m not.
Are they/ these / those/ 名词复数...？ Yes, they are.No, they aren’t.
Complete the questions and answers about each picture. 根据图片补全问句和答语。
3a
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
Let’s Practice1
Let’s observe2
mine, yours, hers等是名词性物主代词, 相当于一个名词, 可以在句子中单独使用。它相当于“形容词物主代词 + 名
词”。而形容词性物主代词只能和名词在一起使用。
名词性物主代词
Let’s learn2
物主代词
数 人称 类别 单数 复数
第一 人称 第二 人称 第三人称 第一 人称 第二人称 第三
人称
形容词性物主代词 my your his her its our your their
名词性物主代词 mine yours his hers its ours yours theirs
汉语 我的 你的 他的 她的 它的 我们的 你们的 他(她、它)们的
口诀：
两种代词形不同，添个 s 形变名。
his,its不用变，my变mine要记清。
eg. 1.This is my book.
2. His hat is blue.
形容词性物主代词有形容词的性质，用来修饰名词,作定语。
位置：形容词性物主代词后要接名词。
形容词性物主代词+名词
Let’s think:
形容词性物主代词的用法
名词性物主代词相当于名词,不能用于名词前，说话时要加重语气，在句中作主语或表语。
注意：名词性物主代词后不接名词。位置：既可作主语，也可做宾语。
名词性物主代词=形容词性物主代词+名词
eg. This is my bag. = This bag is mine.
His pen is red. = His is red.
Let’s think:
名词性物主代词的用法
my book =mine
his sweater = his
your desks = yours
our classroom = ours
our English teacher= ours
their English teacher = theirs
her CDs =hers
its milk =its
形容词性物主代词+名词=名词性物主代词
做题口诀：有名出形，无名出名
Read the questions and complete
the answers. 阅读问句并补全对话。
Is this her ruler
Is that Eric’s schoolbag
Are these his pencils
Are those Anna’s books
Yes, . It’s .
No, . Sally’s.
Yes, . They’re .
No, .
mine.
it is
hers
it isn’t
It is
they are
his
they aren’t
They’re
3b
Let’s practice
1.This is ___ book. And that book is _______.
A. I , yours B. my, she C. my, yours
2. —Is it _____ schoolbag —No,it isn't.
A. he B. she C.her
3.---Is this _____ eraser
---No, it isn't. It is ______.
A. you, Jack's B. your, Jack's C. your, Jack
4. －Is this your key, Jenny
－No. ______ is in my schoolbag.
A. His B. My C. Mine
my
yours
her
your
Jack’s
Mine
单项选择
有名出形
无名出名
Summary
1. …形代+名词+…
2. 名代（单独使用）
3.形代+名词= 名代