单元语法聚焦八
Unit 8
Save Our World
单元语法聚焦八
Unit 8
Save Our World
[it
的用法
]
教材典据
1. It was World Environment Day.
那天是世界环境日。
2. It means “garbage” in American English.
在美式英语中,它的意思是“
garbage”
。
3. Let's do it now.
让我们现在就做吧。
4. I think it's our duty to protect the environment.
我认为保护环境是我们的职责。
5. It is a waste to use paper only on one side.
仅单面用纸是一种浪费。
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语法探究
1
.基本用法
(1)
用作
________
代词,代替前面提到过的事物。例如:
This is a new dictionary. I bought it yesterday.
这是一本新词典,我昨天买的它。
(2)
代替
________
代词,相当于
this
或
that
。例如:
—What's that
?那是什么?
—It's an MP3.
它是一部
MP3
。
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人称
指示
(3)
表示某人
(who
,
someone
,
somebody
等
)
的身份,还可指代不明性别的人或婴儿
(baby)
等。例如:
Someone is coming upstairs. It must be the postman.
有人上楼来了,一定是邮递员。
—Go and see who is knocking at the door.
去看看谁在敲门。
—It's Bill.
是比尔。
(4)
指
________
、距离、自然现象
(
天气、气候、明暗
)
、度量、价值等。例如:
It's Sunday today.
今天是星期天。
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时间
It's three months since he came here.
他到这里已经三个月了。
How far is it to the Great Wall?
到长城有多远?
It's getting dark.
天色渐暗。
2
.
it
的句法功能
这时的
it
没有词义,只是帮助改变句子结构,使句子显得平衡一些或强调某一句子成分。
(1)
用作
________
主语。
it
作形式主语时置于句首,而将作
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形式
真正主语的动词不定式
(
短语
)
、动名词
(
短语
)
或主语从句放到后面。例如:
It is necessary to ask the teacher for help.
向老师求助是必要的。
It hasn't been decided whether to hold a meeting this week.
本周是否召开会议还没有决定。
常用于下列句型中:
①
It is
+
adj.
+
(for sb.) to do sth.
意为“
(
对某人来说
)
做某事
……”
。例如:
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It's important for us to protect the environment.
对我们来说保护环境
(
很
)
重要。
②
It's time to do/for/that…
意为“到
……
时间了”。例如:
It's time to get up/for supper/that we go to school.
是起床
/
吃晚饭
/
上学的时间了。
③
It's one's turn to do sth.
意为“轮到某人做某事了”。例如:
It's your turn to answer the question.
轮到你回答问题了。
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④It's
+
adj.
+
n.
+
to do sth.
意为“做某事是
……”
。例如:
It's bad manners to speak to the old loudly.
对老人大声讲话是不礼貌的。
(2)
用作形式
________
。
it
作形式宾语时,在复合句中充当真正宾语的是动词不定式
(
短语
)
、动名词
(
短语
)
或宾语从句。
it
作形式宾语时,常用在动词
think, make, find, feel
等词之后。例如:
We thought it no use doing that.
我们认为那样做没用。
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宾语
We all think it necessary to finish the project by this month.
我们都认为有必要在这个月完成这项工程。
I find it difficult to solve the problem.
我发现解决这个问题
(
很
)
难。
We think it important for students to study by themselves in the school or at home.
我们认为对学生来说在家里或学校自学是很重要的。
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实战演练
Ⅰ.
单项填空
(
)1. 2017·
安徽
—Is this iPad yours?
—Yes. My parents bought ________ for my language learning.
A. one
B. it
C. other D. another
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B
(
)2.2017·
兰州
Do you think ________ acceptable for a group of women to dance to loud music on the square near your house?
A. it B. that
C. this D. its
A
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(
)3. 2017·
成都改编
Mike lost his school ID card this morning.
He is looking for ________ now.
A. it B. him
C. them D. that
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A
【
解析
】
考查代词的用法。句意:今天早上迈克把他的学生证弄丢了。他现在正在寻找它。指代前句出现的可数名词的单数
card
,故用代词
it
。代词
it
指代物;
him
指代表示男性的人。故选
A
。
(
)4.—________ nearly took us an hour to walk here.
—Have a drink, then. You ________ be thirsty.
A. This; may B. It; may
C. This; must D. It; must
D
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(
)5.We have made________ a rule to read aloud in the morning.
A. this B. it
C. that D. one
B
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Ⅱ.
根据汉语意思完成句子
1
.我花了一个小时写这封信。
________ took me an hour________ ________ the letter.
2
.对我来说学习是很有趣的。
________ is fun for me ________ ________
.
3.
我认为你最好待在这里。
I think________ best ________ you stay here.
It to write
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It to study
it that
4
.对我们来说学好英语很重要。
______ is very important for us _____ _______ ______ ________
.
5
.画画花费许多时间,我不喜欢。
Drawing takes much time and I don't like ________
.
It to learn English well
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it