江苏省永丰初级中学九年级英语下册课件：Unit 1 Asia Grammar(共29张PPT)

(共29张PPT)
1. To learn to use it as a pronoun
2. To learn to use it as an impersonal pronoun
3. To learn to use it to replace the real subject or object
Objectives
A Using it as a pronoun
1. Look at . It is so small.
2. Another famous attraction is .
It runs for over 6,000 kilometres across
northern China.
3. My aunt will have soon. She hopes it
will be a girl.
4.
, isn’t it
5.
It is great fun.
the panda
the Great Wall
a baby
Riding around the countryside is popular in
Guilin
Tourists like to take a boat trip along the
Lijiang River.
it指代前文提到的人、事和物
1. Look at the panda. ___ is so small.
2. Another famous attraction is _____________.
___ runs for over 6,000 kilometres across
northern China.
3. My aunt will have ______ soon. She hopes ___
will be a girl.
4. _____________ the countryside is popular in
Guilin, isn’t ____
5. Tourists like ________________ along the
Lijiang River. ____ is great fun.
the Great Wall
It
it
a baby
Riding around
it
to take a boat trip
It
It
go
Ready
翻译下列句子。
约翰在学校足球队。它是在去年成立的。
— 猫在哪儿？
— 它在花园里。
那个婴儿怎么了，一直在哭。
—谁在敲门？
—是邮递员。
英语很重要，我们都知道。
John is in the school football team. It was reorganized last year.
—Where is the cat
— It is in the garden.
What’s matter with the baby It has been crying.
—Who is that at the door
—It’s the postman.
English is very important, and we all know it.
以上我们已经通过归纳总结和练习对本课的语法内容有了一定的了解，下面就让我们根据之前练习的考察情况进一步选择讲解
该语法项的重难点。
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. 指代上文提过的性别不明或无须指明性别的小孩。
3. 作主语时指代上文提过的人，后跟系表结构，用以指明该人的身份。
4. 指代上下文或一定语境所表明的情况、事件等。
it 作代词的用法
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 Summer Palace
the lake
the lake
bridge
unknown person
4
6
The exchange students 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
B Using it as an impersonal pronoun
It’s nine o’clock in the morning.
It is 1 January today. It is New Year’s Day.
It rained all day.
It is only a five-minute walk from my home to the school.
In Beijing, it is cold and windy in winter.
指代时间
指代日期
指代天气
指代距离
指代天气
___ is nine o’clock in the morning. ___ is 1 January today. ___ is New Year’s Day.
___ rained all day.
___ is only a five-minute walk from my home to the school.
In Beijing, ___ is cold and windy in winter.
It
It
It
It
It
It
go
Ready
翻译下列句子。
现在十二点十分。
距离海滩两英里远。
今天早晨下雨了。
今天是十月一日，国庆节。
It’s ten past twelve.
It’s two miles to the beach.
It was raining this morning.
It’s 1 October today. It is National Day.
以上我们已经通过归纳总结和练习对本课的语法内容有了一定的了解，下面就让我们根据之前练习的考察情况进一步选择讲解
该语法项的重难点。
在表示时间、日期、天气或距离的表达方式里，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.
it 作非人称代词
The exchange students left for Shanghai. Kevin has made some notes in his diary. Rewrite his sentences with it. (P 13)
B
It is 22 February today
It is about 1,300 kilometres
It was 5 a.m.
It was only 2℃.
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 is very tiring to climb the steps.
It is popular to hire a bicycle and ride around the countryside.
3. It is no use crying over spilt milk.
4. It was fortunate that there was a doctor at the spot.
5. It doesn’t matter what he thinks.
6. She thinks it easy to cook meals.
it作形式主语,替代不定式短语、动名词短语及从句
it作形式宾语,替代不定式短语
不定式短语
动名词短语
从句
不定式短语
1. __ is very tiring _______ the steps.
2. __ is popular ______ a bicycle and
___________ the countryside.
3. __ is no use _______ over spilt milk.
4. __ was fortunate _____ there was a doctor at the spot.
5. ___ doesn’t matter ______ he thinks.
6. She thinks ___ easy _______ meals.
It
to hire
It
crying
It
that
It
go
to climb
It
what
it
to cook
ride around
Ready
以上我们已经通过归纳总结和练习对本课的语法内容有了一定的了解，下面就让我们根据之前练习的考察情况进一步选择讲解
该语法项的重难点。
it作形式主语时，替代不定式短语、动名词短语及从句，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 was fortunate that there was a doctor at the spot.
It doesn’t matter what he thinks.
it 作形式主语
it作形式宾语，替代不定式短语、动名词短语及从句，后接宾语补足语，把这类较长的宾语移至宾语补足语之后，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
注意：
it作形式主语，常用于下列句型中：
It is + 形容词 + (of / for …) + to do sth.
It takes sb. some time to do sth.
It is said / reported / … + that从句.
it作形式宾语，常见于“主语+ think(s) / find(s) + it + easy / difficult / hard / … + to do sth”句型中。
写出5个用“it”作为形式主语或形式宾语的句子并指出其成分。
Example:
(1)It is generous of Bill Gates to donate his money to the poor.
(2)It is impossible for such a little boy to carry the heavy bag.
(3)It is no use crying over spilt milk.
(4)It is amazing that he did it on his own.
(5)I find it difficult to understand his idea.
形主
形主
形宾
形主
形主
it is easy
It’s sunny
to stay
It is said
It is funny
it comfortable
It is kind
it
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
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.
1. Review the grammar we’ve learned today.
2. Finish the exercises.
3. Preview Integrated skills on page 15-16.