Unit 4 Topic 1 Section D 课件 2023-2024学年仁爱版英语九年级上册

(共62张PPT)
Unit 4 Topic 1
When was it invented
Section D
01
掌握本课的重点词汇和短语: mark, explorer, system, man-made, find out, as long as, be used to do sth.等.
02
能够理解其他形式的被动语态。如: 现在完成时的被动语态和情态动词的被动语态。
04
用英语来介绍自己的发明,巩固本话题的语言知识并进一步培养“用英语做事情”的能力。
03
通过参与讨论1a的问题来感知、预测文章大意。
Reading
comprehension
New words.
explorer [ ks'pl r ] n.探险者,勘探者
Mark [mɑ k] n.标示;记号v.做记号
system [ s st m] n.体系,方法,制度
man-made ['m nme d] adj.人造的;非天然的
Let’s watch a video.
Pre-reading.
How does Peppa
find out their way
Read the passage and analyse the structure .
Where Are We
Where are we That was a big question when we first explored our world long ago. The early explorers found that the stars in the sky were good guiding marks. Using the stars, they could find out where they were and in which direction they were going. This method worked well at night as long as the weather was good and the stars could be seen. But it didn't work so well during the rest of the time. That was a problem.
Today, the problem has been solved by the Global Postitoning System(GPS). It is like a man-made star. We can use it at any time, in any place and in any weather to find out our position. It can also be used to study the shape of the earth. The GPS is a great invention that helps us explore our planet and discover where we are.
1、第一阶段，认识问题和明确地提出问题。2、第二阶段，分析所提出问题的特点与条件。3、第三阶段，提出假设，考虑解答方法。4、第四阶段，检验假设。思维过程，思维包括分析、综合、比较、抽象、概括判断和推理等基本过程。
raise a question
Discussing problems
Solve problems
Read Para. 1 and discuss the questions.
Where are we That was a big question when we first explored our world long ago. The early explorers found that the stars in the sky were good guiding marks. Using the stars, they could find out where they were and in which direction they were going. This method worked well at night as long as the weather was good and the stars could be seen. But it didn't work so well during the rest of the time. That was a problem.
1. How did the early explorers know where they were
2. What’s the disadvantage of using the stars as guiding marks
They found out where they were
by using stars.
Its disadvantage is that it didn’t work
well when the weather was bad and the
stars could not be seen.
Fill in the blanks.
The early __________ found that the stars in the sky were good guiding ______. Using the stars, they could find out where they were and in which __________ they were going.
explorers
marks
direction
把这篇文章作为短文填空的一个素材
短文填空考点：名词的单复数。
This method worked ______ at night as long as the weather was good and the stars could be _____. But it didn't work so well ______ the rest of the time.
副词修饰动词
well
seen
during
see-saw-seen
在......期间
Fill in the blanks.
Are there any good ways
to solve the problem
Read Para. 2 and discuss the questions.
Today, the problem has been solved by the Global Postitoning System(GPS). It is like a man-made star. We can use it at any time, in any place and in any weather to find out our position. It can also be used to study the shape of the earth. The GPS is a great invention that helps us explore our planet and discover where we are.
1. What is a GPS Is it useful to use
It is like a man-made star. We can use it at any time, in any place and in any weather to find out our position. It is very useful.
定语从句
Today, the problem has been _______ by the Global Postitoning System(GPS). It is like a _________ star.
solved
man-made
人造的
Fill in the blanks.
the usage of GPS
Finish the mind map.
to find out our position.
to study the shape of the earth
has brought great progress in science and technology
The GPS is a great invention that helps us explore our
planet and discover where we are.
It plays an important role in our daily life.
Know more about GPS
Watch and finish the table
Name: _______________
Inventor: ____________
Year: ________________
Use: _________________
_______________
Global Postitoning
System(GPS)
American Scientists
in the 1970s(be used)
to find out our position
to study the shape of
the earth.
Write a short passage according to the table.
Name: _____________________________
Inventor: ____________________
Year: ______________________
Use: _________________
_________________
Global Postitoning System(GPS)
American Scientists
in the 1970s(be used)
to find out our position
to study the shape of the earth.
The GPS is one of the greatest invention
in the world. It was developed by American Scientists in in the 1970s. Now the GPS is so powerful that it is used widely around the world.
First, we can use it at any time, in any place and in any weather to find out our position. Second, It can also be used to study the shape of the earth. What’s more, It plays an important role in people's life and the progress of science and technology.
Further writing.
爱迪生发明了灯泡,给我们的生活带来了光亮；莱特兄弟发明了飞机，人类实现了飞上天的愿望；人们可以用智能手机上网，看电影，拍照 听音乐，做各种各样的事情。那么你认为牛活中最有用的发明是什么呢？请根据表帯内容，查阅相关信息,以__________Changes Our Life为题，写一篇短文。
________________________Changes Our life Invention
Year Country Usage
Further writing.
Wechat Changes Our Life Wechat, one of the most popular chatting tools, was created in China. It was developed by Tencent（腾 讯）in January 2011. Now Wechat is so powerful that it is used widely around people in China.
For Wechat, everything is simple. It is a cheap way of communication. It can save a great deal of the cost of making a phone call. And you can share text messages, voice messages and pictures or videos with your friends. Also, you can do group chats, or you can find new friends nearby. What ’s more, you can pay with Wechat. As it is so convenient, people say that they can do everything with a smart phone at hand.
根据上下文含义，完成短文.
Thanks to GPS, we can exactly know ________we are now. GPS is like a man-made “star”. It can be _______ in any place and any weather condition to find out our ________. In the past, the early explorers had to use stars in the _______ to tell them where they were, however, this method didn’t work well when the weather was bad. So GPS is a great invention that can help humans to better ________ our planets.
where
used
position
sky
explore
Project 1---Describing Your Invention.
.
Name: Plar (plan-car)
Inventor: Kangkang
Year: 2014
Use: Both flying and driving
This is Kangkang’s invention.
Look at the information and the picture.
What do you think of it
Discuss with your partners.
Project 1---Describing Your Invention.
.
2. Design your own invention. Draw a picture of it and write down the information about it.
Name :____________
Inventor:___________
Year:_____________
Use:______________
3. Show the picture of your invention and describe it to the class.
4. Discuss in groups to decide which is the most useful /interesting/funny invention.
1.很久以前
long ago
2.在天空中
in the sky
3.查明，弄清楚
4.奏效，起作用，产生影响
5.在夜晚
6.只要……(主将从现)
find out
work well
at night
as long as
7.剩下的……
the rest of...
at any time
8.在任何时候
in any place
9.在任何地方
10.在任何天气情况下
in any weather
11.被用来做某事
be used to do sth.
12.某物的长处/优点
13.对某人有用
14.在将来
the disadvantage of sth.
be useful to...
in the future
Language points
1. Using the stars, they could find out where... in which direction...
考点
①using the stars 表示“现在分词短语作状语”
翻译
森林消失了，只留下沙漠。_______________________________________
The forests have gone, leaving only sand.
②辨析look for, find和find out的用法
look for 表示“寻找” 是有目的的找，强调“寻找”这个动作
翻译
--你在找什么？--我在找我的字典。_______________________________________
What are you looking for --I’m looking for my dictionary.
1. Using the stars, they could find out where... in which direction...
考点
find 表示“找到；发现”强调“找的结果” 其宾语往往是某个丢失的东西或人，
翻译
--你昨天找到自行车了吗？_______________________________________
Did you find your bike yesterday
--没有，我到处找了，但是没有找到。_______________________________________
--No. I look for it everywhere, but didn’t find it.
1. Using the stars, they could find out where... in which direction...
考点
find out表示“弄清楚、查明白”着重表示通过理解、分析、询问等弄清楚、查明一件事情。其后的宾语往往是某个情况、事实。
翻译
请查一下火车什么时候离站。_______________________________________
Please find out when the train leaves.
③in...direction 表示“按/朝...方向”
翻译
他们正朝着同一方向奔跑。_______________________________________
They were runnig in the same direction.
2.This method worked well at night as long as the weather was good and the stars could be seen.
① work well 表示“奏效，起作用，产生影响”
考点
翻译
药物奏效了！_______________________________________
The medicine worked well.
well adv. 同类用法还有：(物品)+sell well意为“…卖得很好”；(衣物)+wash well 意为“…很好洗”；(车)+ride well 意为“…很好驾驶”。
2.This method worked well at night as long as the weather was good and the stars could be seen.
work out 计算，算出；
work as 从事某种职业；
work on/upon 从事，忙于；
work for 为…做事，为…尽力，被…雇佣
拓展
2.This method worked well at night as long as the weather was good and the stars could be seen.
②as long as 表示“只要”
考点
翻译
你只要努力就一定能够通过考试。_______________________________________
You can pass the exam as long as you work hard.
③the rest 表示“剩余的”其后接of+名词（名词可以是可数名词，也可以是不可数名词）谓语动词由of后的名词决定。
翻译
剩下的书是给那些残疾儿童的。_______________________________________
The rest of the books are for the disabled children.
及时练习
（ C ）1.This method sounds _____，and works _____ in our studies.
A.well;well B.good;good
C.good;well D.well;good
（ C ）2.The cake smells _____ and sells_____ .
A.well;well B.nice;good
C.good;well D.sweet;good
3. The GPS is a great invention that helps us explore our planet and discover where we are.
考点
that 是关系代词，代替 invention 在定语从句that helps us explore our planet 中作主语。
where是连接副词，引导宾语从句where we are。
（ ）—Does anybody know _____ —It's Uncle Lee's.
A.where is the bike B.who the bike is
C.whose bike is it D.whose bike it is
D
一般过去时的被动语态
1.一般过去时的被动语态谓语部分的基本形式：
be的过去式was/were+及物动词的过去分词
翻译
数码像机是什么时候发明的
_______________________________________
When was the digital camera invented
它是 1975 年发明的。
_______________________________________
It was invented in 1975.
2.一般过去时的被动语态的陈述句结构：
一般过去时的被动语态
主语+was/were+动词的过去分词+(by+人代宾格)+其他
翻译
中华人民共和国成立于 1949 年。
_______________________________________
The PRC was founded in 1949.
3.一般过去时的被动语态的一般疑问句结构：
Was/Were+主语+动词的过去分词+(by+人代宾格)+其他
Was the PRC founded in 1949
3.一般过去时的被动语态的一般否定句结构：
主语+was/were+not+动词的过去分词+(by+人代宾格)+其他。
一般过去时的被动语态
The PRC wasn’t founded in 1949.
3.一般过去时的被动语态的特殊疑问句结构：
What/Where/When+was/were+主语+动词的过去分词+其他
翻译
这些机器什么时候生产的
_______________________________________
When were those machines produced
1.That kind of watch was made in Shanghai.
2.Wheat can be made into bread and cakes.
3.This chair is made of plastic(塑料).
4.Paper is made from wood.
5.The model plane is made by my father.
6.He was made to stand there for an hour because he talked in class.
用正确的介词填空
7.Pens are used for writing.
8.English is used as the first language in America.
9.Computers are widely used by the people in the office.
10.He is used to getting up early in the morning.
用正确的介词填空
1.Yesterday we had a math test.I got full marks (得分).
2.The explorers found the stars in the sky were good guiding marks (标识，记号).
3.The four British explorers (探险者)have a great deal of experience of this kind of trip.
4.These are man-made (人造的)flowers.
5.The rest (剩下的)of the students in our class will stay in the classroom.
根据汉语提示完成句子
6. Using (use)the stars, they could find out where they were.
7.I think I drive very well,but I know little about directions (direct).
8.This method works well (good)in learning English.
9.The rest of the milk has (have)gone bad.
10.Today，the problem has been solved (solve)by the Global Positioning System(GPS).
根据汉语提示完成句子
Grammar
Find out the sentences with passive voice(被动语态).
1. The stars could be seen.
2. It can be used to study the shape of the earth.
情态动词的被动语态构成：
情态动词+be+动词的过去分词
含有情态动词的被动语态.
can/may/must/should + be+过去分词
1.Amy can take good care of Gina ．
by Amy.
Gina
can be taken good care of
2.You should drink more water.
More water
should be drunk
by you.
Passive Voice (Ⅱ)
一般过去时的被动语态 was /were +done
The radio was invented by Guglielmo Marconi in 1895.
When was the digital camera developed
Where was it developed
What is a rocket used for
It was developed in the 1970s.
It was developed in Japan.
It is used for sending satellites or spaceships into space.
Passive Voice (Ⅱ)
一般过去时的被动语态 was /were +done
1.概念： 一般过去时的被动语态表示主语是过去某个动作的承受者。
2. 构成：主语＋was/were＋动词的过去分词。
Some new computers were stolen last night.
昨天晚上有几台新电脑被盗了。
Passive Voice (Ⅱ)
一般过去时的被动语态 was /were +done
3.主动变被动：把主动语态中的主语放在介词by之后作宾语，将主格改为宾格(“by＋人称代词”短语可以省略)。如：
All people laughed at him. 所有的人都嘲笑他。
→ ______________________________他被所有的人嘲笑。
He cut down a tree. 他砍倒了一棵树。
→ ____________________________ 一棵树被他砍倒了。
He was laughed at by all people.
A tree was cut down by him.
Passive Voice (Ⅱ)
一般过去时的被动语态 was /were +done
语态：表示主语和谓语动词之间的关系。
英语有两种语态，即主动语态和被动语态。
主动语态：表示主语是动作的执行者。被动语态：表示主语是动作的承受者。
如：
Many students study English.(主动语态)
English is studied by many students.
(被动语态)
Passive Voice (Ⅱ)
一般过去时的被动语态 was /were +done
将主动语态变为被动语态方法: 原宾语变主语，动词变为be+动词过去分词， 原主语由by连接。
by many students.
1.Many students study English.
English
is studied
2.They made shoes in that factory.
Shoes
were made
by them
in that factory.
Passive Voice (Ⅱ)
一般过去时的被动语态 was /were +done
1. Many houses________ in the earthquake of April
20, 2013 in Ya'an.
A．is destroyed　　 　B．are destroyed
C．was destroyed D．were destroyed
2. Flowers________ along the road last year.
A．plant B．planted
C．are planted D．were planted
Passive Voice (Ⅱ)
一般过去时的被动语态 was /were +done
3. —Frog, Mo Yan's latest novel, please!
—Sorry, it________ just now. But it will come out again soon.
A．sold out B．is sold out
C．has sold out D．was sold out
4. —Who designed this game
—It________ by Tom in 1999.
A．is designed B．designs
C．was designed D．designed
Passive Voice (Ⅱ)
一般过去时的被动语态 was /were +done
5. —Do you know Earth Day
—Sure. It________ in 1970 to tell us to protect our planet.
A．sets up B．set up
C．is set up D．was set up
6. Lots of food and water ________ to Ya'an, Sichuan Province
immediately after the earthquake happened.
A．were sent B．are sent
C．send D．sent
Functions
I ______(希望)I could go into space some day.
I ______(希望) your dream will__________(实现).
______________ (据说) he invented more than two thousand things during his life.
_________(发明) is interesting and exciting and everyone can be an__________ (发明家).
wish
come true
hope
It’s said that
Inventing
inventor
★wish后的从句可用_______语气：
表示美好愿望，不一定能实现。
虚 拟
Practice
用所给词的适当形式填空.
1.You are late, all the tickets __________(sell) out an hour ago.
2.This type of cellphone ____________(make )in Shenzhen.
3. I _________________ ( not invite) to yesterday’s party.
4. ________ those machines __________(check) this morning
5. Many trees and flowers ______________(plant) in our school last year, and they made our school a beautiful garden.
were sold
were made
wasn’t invited
Were
checked
were planted
将下列句子由主动语态变为被动语态 .
1. They will play football on this Sunday.
2. Lucy did the homework in the evening.
3. They often use computers in class.
4. We have made these machines in Beijing before.
Football will be played by them on this Sunday.
The homework was done by Lucy in the evening.
Computers are often used by them in class.
These machines have been made (by us) in Beijing.
将下列句子由主动语态变为被动语态 .
1.People use radios to learn English in the past.
_____________________________________________
2.Jack will show me the photo.
______________________________________________
3.They have raised much money for the Project Hope.
______________________________________________
4.I often hear Mary sing English songs at home.
_______________________________________________
5.We mustn’t throw litter about.
________________________________________________
6.People can visit planets like Mars.
_________________________________________________
Radios were used to learn English in the past.
The photo will be shown to me.
Much money has been raised for the Project Hope.
Mary is often heard to sing English songs at home.
Litter mustn’t be thrown about.
Planets like Mars can be visited.
（ ）1.Our parents can do anything for us _____ we make achievements in our study.
A.as well as B.as far as C.as long as D.as often as
（ ）2.Father often tells me _____ too much time on computer games.
A.don't spend B.not spend
C.not to spend D.not spending
单项选择
（ ）3.He didn't pass the exam because he _____ by his teacher at all in the past.
A.encouraged B.wasn't encouraged
C.isn't encouraged D.weren't encouraged
（ ）4.Nowadays GPS _____ finding out our position and studying the shape of the earth.
A.used to B.was used to
C.be used to D.is used for
单项选择
（ ）5.The rest of the apples _____ for you.
A.am B.is C.are D.be
（ ）6.The mobile phone has influenced people's life a lot since it _____.
A.invents B.invented
C.is invented D.was invented
（ ）7.Gina went to the doctor's yesterday and she _____ about the importance of good living habits once more.
A.told B.is told
C.was told D.has told
（ ）8.Using the stars,we can find out if we go _____ the direct direction.
A.in B.of C.by D.on
（ ）9.—When will his new novel _____
—Sorry,I don't know.
A.come in B.come from
C.come out D.come back
（ ）10.All the readers were _____ by the _____ story.
A.moving;moved B.moved;moving
C.moved;moved D.moving;moving
1.It is like a man-made star.(改为否定句)
It isn't like a man-made star.
2.Drivers can find out where they are by using GPS.(对划线部分提问)
How can drivers find out where they are
3.Did you clean the classroom yesterday (改为被动语态)
Was the classroom cleaned yesterday
4.只要你沿着这条街一直往前走，你一定会找到那家医院。(完成译句)
You will find the hospital as long as you go straight along this street.
5.它已经有效地控制了中国人口。(完成译句)
It has worked well in controlling China's population.
句型转换
Summary.
We Learn: 1. Some words : mark, explorer
2. Some phrases: find out, in …, direction,
as long as, work well, the rest of the time,
be used to, the shape of
3. Some sentences:
This method worked well at night as long
as the weather was good and the stars could be seen.
We can: 1. Use the passive voice of the simple past tense more
properly.
2.Talk about new technology GPS.
3. Develope our imagination and creativity by
designing our own inventions.