智汇文库
专业文档
单元语法小专?/p>
(Grammar Focus)
语法精讲
一、指示代?/p>
this
?/p>
these
?/p>
that
?/p>
those
在这四个指示代词中,
this
意为“这”,
these
意为
“这些”,指离说话人较近的人或物;
that
意为“那”,
those
意为“那些”,指离说话人较远的人或物。例如:
This is my brother.
这是我的哥哥?/p>
That is a blue cup.
那是一个蓝色的杯子?/p>
These are her parents.
这些是她的父母?/p>
Those are his friends.
那些是他的朋友?/p>
?/p>
this
?/p>
that
作主语时?/p>
be
动词要用单数形式
is
?/p>
后面的名词也用单数形式;?/p>
these
?/p>
those
作主语时?/p>
be
动词要用复数形式,后面的名词也用复数形式?/p>
当回答含?/p>
this
?/p>
that
作主语的问句?/p>
?/p>
this
?/p>
that
指物时,
应用
it
代替句中?/p>
this
?/p>
that
?/p>
当回答含?/p>
these
?/p>
those
作主语的问句时,应用
they
代替句中?/p>
these
?/p>
those
。例如:
?/p>
Is that your pen
?那是你的钢笔吗?/p>
?/p>
Yes
?/p>
it is.
是的,它是?/p>
?/p>
Are these his grandparents
?这些是他的
(
?/p>
)
祖父?/p>
吗?
?/p>
No
?/p>
they aren't.
不,他们不是?/p>
【注意?/p>
(1)
介绍某人时,?/p>
this
?/p>
that
,而不?/p>
he
?/p>
she
?/p>
(2)
打电话时,说自己是谁?/p>
This
is
?/p>
,问别人是谁
?/p>
Who's that
?例如:
Hello! This is Mary. Who's that
?喂!我是玛丽。您?/p>
哪位?/p>
二、单数句与复数句的转?/p>
单数句改为复数句是句型转换中的一个重要题型?/p>
将单数句改为复数句常遵循如下规则?/p>
1
.将单数句中的指示代词、人称代词、名词及
be
动词等变为对应的复数形式?/p>
?/p>
this
?/p>
these
?/p>
that
?/p>
those
?/p>
he/she/it
?/p>
they
等。例如:
This/That is a pen.
?/p>
These/Those are pens.
He is in China.
?/p>
They are in China.
I'm a girl.
?/p>
We are girls.
2
?/p>
将单数句中的不定冠词
a
?/p>
an
去掉
(
某些固定搭配
除外
)
。例如:
It is an orange.
?/p>
They are oranges.
This is a pen.
?/p>
These are pens.
3
.单数句中的形容词、定冠词、副词、疑问词、介
词等保持不变。例如:
The pen is red.
?/p>
The pens are red.
What
color
is
the
jacket
?→
What
color
are
the
jackets?
【注意?/p>
(1)
作定语表示性别的单数名词在变成复数
句时要变成复数形式;作定语表示性质的单数名词在?
成复数句后仍用单数形式。例如:
His
friend
is
a
man
teacher.
?/p>
His
friends
are
men
teachers.
That is an orange tree.
?/p>
Those are orange trees.
(2)
表示单数的物主代词在变成复数句时可根据实?/p>
情况变化,有时可仍用单数,有时可改为相对应的复数
形式。例如:
This is his ruler.
?/p>
These are his/their rulers.
She is my friend.
?/p>
They are my/our friends.
语法精练
?/p>
.
用指示代?/p>
this
?/p>
that
?/p>
these
?/p>
those
填空?/p>
1
?/p>
?/p>
What's ________ over there (
在那?/p>
)?
?/p>
It's a bus.
2
?/p>
?/p>
Are ________ your pens?
?/p>
Yes
?/p>
they are.
3
?/p>
?/p>
Are ________ your pencils?
?/p>
No
?/p>
my pencils are here.
4
?/p>
Hello.________ is Jane. Is ________ Peter?
5
?/p>
Bob
?/p>
________ is my good friend
?/p>
Mike.
?/p>
.
按要求完成下列句?/p>
?/p>
每空一词?/p>
6
?/p>
Are those your sisters
?/p>
(
作否定回?/p>
)
No
?/p>
________ ________.
7
?/p>
Is that a cup
?/p>
(
作肯定回?/p>
)
Yes
?/p>
________ ________.
8
?/p>
What is that
?/p>
(
改为复数?/p>
)
What ________ ________
?/p>