译林九年级英语下 9B Unit 1 Asia Grammar ---Uses of it 教学课件 （共38张PPT）

(共38张PPT)
Unit 1 Asia
Grammar
To learn to use it as a pronoun
To learn to use it as an impersonal pronoun
To learn to use it to replace the real subject or object
take up
quarter
either
level
service
占据(空间)；占用(时间)
n. 四分之一
det.&pron. 两者之一
n. 水平
n. 服务；工作
A Using it as a pronoun
Look at the bird. ____is so small.
It
There is a small house over there. ______ is mine.
It
The little baby is drinking milk. _____weighs only 3 kilos.
It
--Who was calling you just now?

--_____ was my cousin.
It
Riding around the countryside is popular in Guilin, isn’t______?
it
实义的it作代词时用来指代具体的内容：
1. 指代上文提过的生物或非生物。复数形式为they；
2. 指代性别不明的婴儿或小孩；
3.指代不知道的人（尤指打电话和敲门的状态下）；
4.指代前文出现的动作、状况和观点。
注意：
指代宠物时，常可用he或she来代替it。如：
他有一只宠物狗。她是他最好的朋友。
He has a pet dog. She is his best friend.
The exchange student visited the Summer Palace yesterday. Kevin is writing about it. Read the passage below and find out what each it refers to. Write your answers in the blanks. (P 12)
A
Yesterday we visited the Summer Palace and spent about three hours in it . The palace is a Chinese garden and mainly includes a hill and a lake . The lake is very big—it takes up three quarters of the area. It was frozen , so we could not row a boat there . It was really a pity. Across the lake is a 17-hole bridge.
1.____________
2.____________
3.____________
4.____________
the Summer Palace
the lake
the lake
we couldn’t
row a boat
there.
There are many stone lions on either side of it . The lions are all different from each other .Isn’t it amazing ?While I was walking along the bridge, my mobile phone rang. It was my mum, I told her that the Summer Palace was well worth visiting.
5.____________
6.____________
7.____________
the bridge
The lions are all
different from
each other.
The person
who called me.
B Using it as an impersonal pronoun
表示时间、日期、天气、距离、自然现象等，我们用 it 作形式主语。此时，it无实际意义但不可以省略。
如：
It is half past twelve.
It is 25 November today.
It is fine today.
It is two kilometres to the post office.
The exchange students left for Shanghai. Kevin has made some notes in his diary. Rewrite his sentences with it. (P 13)
B
1.Today is 22 February .We left Beijing for Shanghai early in the morning.
__________________________. We left Beijing for Shanghai early in the morning.
2.Shanghai is about 1,300 kilometres from Beijing.
________________________________from Beijing to Shanghai.
3.I woke up at 5 a.m. this morning.
_____________when I woke up this morning.
4.I felt a little cold when we went out. The temperature was only 2°C.
I felt a little cold when we went out._____________________.
It is 22 February today
It is about 1,300 kilometres
It was 5 a.m.
It was only 2℃
5.Winter is very cold and dry in Beijing.
In winter, _____________________________.
6.We arrived in Shanghai on a sunny day .
______________________ when we arrived in Shanghai.
7.We got to our hotel at noon.
_________________ when we got to our hotel.
8.Our hotel is not far from the Bund.
__________________ from the Bund to our hotel.
it is very cold and dry in Beijing.
It was a sunny day
It was noon
It’s not far
C Using it to replace the real subject or object
it作形式主语时，替代不定式短语、动名词短语及名词性从句，把这类较长的主语移至句尾，使句子显得匀称。
例如：
It is a great pleasure to be working with you.
It is necessary for you to obey the order.
It is no use crying over spilt milk.
It was fortunate that there was a doctor at the spot.
It doesn’t matter what he thinks.
Useful structures with it
1.It is + adj.+ (of / for sb) + to do sth.
2.It takes sb. some time to do sth.
3.It is said/reported/known … + that从句.
4.It is one’s turn to do sth.
5.It’s time to do sth / for sth.
6.It’s + some time since 从句.
7.It’s a pity that 从句.
8.It’s better (for sb ) to do sth.
9.It seems that 从句.
10.It is +被强调部分+who/ that 从句.
注意：It is + 形容词 + (of / for …) + to do sth.
表示“做某事对某人来说怎么样”相当于To do sth is +adj. + for sb .这一句型中的形容词常为描述事件或动作的形容词，
如important, interesting, necessary, difficult, easy, useful, impossible, pleasant等；
It is + 形容词 + (of / for …) + to do sth.
表示“某人做了某事怎么样” ，相当于sb is +adj. + to do sth.这一句型中的形容词常为描述行为者的性格品质的形容词，如good, kind, clever, polite,careful, lazy,right,wrong等。
it作形式宾语，替代不定式短语、动名词短语及名词性从句，后接宾语补足句，把这类较长的宾语移至宾语补足句之后，使句子显得匀称。
例如：
We consider it foolish of him to meet her.
Jane found it dull working at the kitchen sink all day.
George made it clear that he disagreed.
I take it for granted that you all know this.
It 作形式宾语，常见于“----think / find/ make / believe+ it + easy / difficult / hard / … + to do sth”句型中。
Useful structures with it
We think it our duty to clean our classroom every day. 　 He felt it important learning English well. 　 They found it difficult that they would finish their work in two days.
Miss Thompson, a British teacher travelling with the exchange students, is writing down what she thinks about Shanghai. Help her complete her notes with it. (P 14)
C
About Shanghai
Traffic: The traffic is often busy, but
public transport here is quite
good , so __________(easy) for
people to get around.
Weather : __________ (sunny) and warm.
We like ________ here .
Environment:________ (said) that the air is
not clean here , but I do not
think the pollution is as serious as
I imagined.
Sight : Shanghai is beautiful . _________
it is easy
It’s sunny
it
It is said
It is funny
(fun) to ride around the city and
visit the interesting places.
Food : Chinese food is delicious . I will ask my
family to go to a Chinese restaurant
and try _____ when I get back.
Hotel : We all think________________
(comfortable) to stay in this hotel.
They provide a high level of service .
People :The local people are friendly .
___________ (kind) of them to
answer all our questions.
it
it comfortable
It is kind
take up
three quarters
row a boat
a 17-hole bridge
be different from each other
leave for Shanghai
travel around ---
on a sunny day
provide a high level of service

get around
public transport
占据，占用
四分之三
划船
一座十七孔的桥
形态各异
动身去上海
游遍……
在一个阳光灿烂的日子里
提供高水平的服务
观光，到处走
公共交通
Exercises
指出下列句中it所指代的内容
1. It is cooler in Tianjin than in Beijing.
2. It is only about half an hour's ride from here to my home.
3. You haven’t got a fever. It’s 37℃.
4. It is very quiet at the moment.
5. It’s three o’clock now.
在句中指出it所指代的内容
1. Tom has failed in the exam, have you heard about it?
2. A: Who is making such a noise?
B: It must be the children.
3. Look at that lovely baby in the cradle!
Oh, dear. It is crying.
4. All/Everything is ready, isn’t it?
5. There’s no more than one pen here. Do you want to buy it?
6. To say is easier than to do, isn’t it?
选择it, that, this, one(s), the one(s) or those填空
1. There’s no more than one vase here. Do you want to buy _____?
2. We have more than a pen in our shop. Do you want _____?
3. The cost of renting a house in central Xi’an is higher than ____ in any other area of the city?
it
同物，特指
one
其中之一，泛指
that
同类异物，特指
4. There is a river along the village. __ is a
river with a long history.
5. This pen is mine and______________
on the desk is Tom's.
6. My mother bought me a new dictionary
and her mother will buy her _____ too.
7. The students in my class are stronger
than ________________ in Class 1.
It
that/the one
one
those/ the ones
To have a good knowledge of history is very helpful for all of us.


To learn a foreign language is very useful for a scientist.


To finish this work in three hours is necessary.
It is very helpful for all of us to have a good knowledge.
It is necessary to finish this work in three hours.
It is very useful for a scientist to learn a foreign language.
I. 用it作形式主语改写句子。
现在十点半了。

我觉得和他一起工作很愉快。

在那个城市夏天炎热冬天寒冷。


建这座桥花了他们一年的时间。

据说他的孩子不见了。
It is ten thirty now.
II. 翻译下列句子。
I find it pleasant to work with him.
It is hot in summer and cold in winter in that city.
It took them a year to build the bridge.
It is said that his child is lost.
Suddenly ___began to rain. He found __ hard to walk there. Then he took a bus home. Unfortunately ___ went wrong. When he got home, he was wet through. Thus ___ was a day that he would never forget.
it
____ was a sunny day. Peter decided to go for a walk to the park, though _____ was two miles away. ___ was so comfortable to walk on the street.
It
It
it
it
it
it
1. Review the grammar we’ve learned today.
2. Finish the exercises in Learning English.
3. Preview Integrated skills on page 15-16.