秋七年级英语上册 Unit 2 This is my sister单元语法聚焦二 (新版)人教新目标

This is my sister
[指示代词和单数句与复数句的转换]
1．This is my sister.这是我的姐姐/妹妹。

2．Those are my parents.那是我的父母。

3．These are my brothers.这些是我的兄弟们。

4．This is my friend Jane.这是我的朋友简。

5．That's my grandfather.那是我的祖父。

6．—Who's she？她是谁？
—She's my sister.她是我的姐姐/妹妹。

7．—Who's he？他是谁？
—He's my brother.他是我的哥哥/弟弟。

8．—Who're they？他们是谁？
—They're my grandparents.他们是我的祖父母。

1．指示代词
(1)定义：
指示代词是用来指示或标识人或事物的代词。

指示代词表示“这个”、“那个”、“这些”、“那些”等含义。

指示代词有名词和限定词的功能。

常见的指示代词有________，________，________，________等。

(2)用法：
①指示代词可在句中作主语、宾语和定语。

如：
________ is a desk.这是一X书桌。

(作主语)
________ boy is my friend.
这个男孩是我的朋友。

(作定语)
②this和these表示所指的人或物距离说话人比较近，而that和those表示所指的人或物距离说话人比较远。

如：
________ is an orange and ________ is an apple.
这是一个橙子，那是一个苹果。

③从数上来看，this和that指单数， these和those指复数。

如：
________ is my mother.这是我妈妈。

________ are my parents.这是我的父母。

④this和that用作用语时，this指自己，而that指对方。

如：
Hello, ________ is Mary. Is________ Xiaoli?
你好！我是玛丽。

你是小丽吗？
⑤当指示代词在疑问句中作主语时，其答句主语的变化：this, that→it; these, those→they。

如：
—Is________ a book？这是一本书吗？
—Yes, ________ is.是的，它是。

—Are________ your friends?
那些是你的朋友吗？
—Yes, ________ are.是的，他们是。

2．单数句与复数句的转换
(1)将单数句中的指示代词、人称代词、名词及be动词等变为复数形式
This/That is a ruler. → These/________ are rulers.
She is in China. → They are in China.
I'm a boy. → We ________ ________．
(2)将单数句中的不定冠词a, an去掉(某些固定搭配除外)。

It is an apple. → ________ ________ apples.
That is a pencil. → ________ ________ pencils.
(3)单数句中的形容词、定冠词、副词、疑问词、介词等保持不变。

The pen is red. →The pens are red.
What color is the jacket? →What color are the jackets?
[注意] 名词作定语时，一般用单数形式，被修饰的名词变复数时，一般情况下，作定语用的名词不需要变为复数形式，但由man或woman作定语修饰的名词变成复数时，两部分皆要变为复数形式。

如：
That is an orange quilt.
→Those are ________ ________．
She is a woman doctor.
→They are ________ ________．
His friend is a man teacher.
→His friends are ________ ________．
Ⅰ.写出下列单词的复数形式
1．this________
2．friend ________
3．name ________
4．is ________
5．family ________
6．that ________
7．key ________
8．boy ________
9．she ________
10．parent ________
Ⅱ.单项填空
( )1.________ my friends.
A．This's B．That's
C．These are D．These is
( )2.Look at the girls! ________ are my sisters.
A．Those B．These C．You D．They
( )3.This ________ my sister and those ________ my friends. A．is; are B．are; is
C．are; are D．is; is
( )4.Hello, Mary. ________ my friends, Jack and Jim.
A．This is B．That is
C．These are D．It is
( )5.Are ________ her ________？
A．this; parent B．this; parents
C．these; parent D．these; parents
( )6.I'm looking for my key, but I can't find________．
A．it B．one
C．this D．that
( )7.—Is this your classmate?
—________. It's my brother.
A．Yes, it is B．Yes, he is
C．No, it isn't D．No, she isn't
( )8.—Are those your erasers?
—________．
A．Yes, it is B．No, it isn't
C．Yes, these are D．No, they aren't
Ⅲ.用指示代词this, that, these或those填空1．—What's ________ over there?
—It's a bus.
2．—Are ________ your pencils?
—No, they aren't. My pencils are here. 3．—Are________ your rulers?
—Yes, they are. I put them here.
4．Hello. ________ is Mary. Is ________ Jack? Ⅳ.根据汉语意思完成句子
1．他们是我的父母。

________ ________ my ________．
2．那些是你的朋友们吗？
________ ________ your friends?
3．那些钥匙是什么颜色的？
What ________ ________ those ________？
4．她是我的姐姐。

________ is my ________.
5．“这是你的弟弟吗？”“是的，他们是。

”
—________ ________ your ________？
—Yes, ________ ________.
Ⅴ.按要求完成下列各题
1．This is a red jacket. (改为复数句)
________ ________ red ________．
2．Those are oranges. (改为单数句)
________ ________ ________ orange.
3．Are these erasers？(作否定回答)
No, ________ ________．
4．They are girls. (改为单数句)
________ ________ ________ ________．
5．your, is, sister, Lily(连词成句)
________________________________________________________________________?
Ⅵ.根据汉语提示完成短文
This is a 1.________(照片) of Mr. Black's 2.________(家庭). The man in the middle is Mr. Black, the 3.________ (父亲). The woman is the 4.________(母亲). They have a son and a 5.________(女儿). The son is behind Mr. Black. His 6.________(名字) is Jack. He is 10. Kate is Jack's 7.________(妹妹). She is 8.________(九岁). Jack is in Grade 9.________(五) and Kate is in Grade Four. They are 10.________(好的) students.
详解详析
【语法探究】
1．(1)this; that; these; those
(2)①This; This②This; that
③This; These ④thi s; that
⑤this; it; those; they
2．(1)Those; are boys
(2)They are; Those are
(3)orange quilts; women doctors; men teachers
【实战演练】
Ⅰ
4．are
7．keys
Ⅱ由后面的“friends”可知用these are。

2．D 代替前文提到的复数名词用they。

3．A 考查be动词的用法。

this表示单数，用is; those表示复数，用are。

4．C
7．C 指示代词this在疑问句中作主语时，其答句的主语用it，故排除选项B和D。

根据“It's my brother.”可知选C。

8．D 根据题干中的those可排除选项A和B。

回答these和those的一般疑问句时，应用代词they来作答，故选D。

Ⅲ
4．This; that
Ⅳ.1.They are; parents 2.Are those
3．color are; keys 4.She; sister
5．Are these; brothers; they are
Ⅴ.1.These are; jackets 2.That is an
3．they aren't 4.She is a girl
5．Is Lily your sister
Ⅵ
4．mother
7．sister。